How Robust is the N = 34 Subshell Closure? First Spectroscopy of Ar 52

Liu, H. N.; Obertelli, A.; Doornenbal, P.; Bertulani, C. A.; Hagen, G.; Holt, J. D.; Jansen, G. R.; Morris, T. D.; Schwenk, A.; Stroberg, R.; Achouri, N.; Baba, H.; Browne, F.; Calvet, D.; Château, F.; Chen, S.; Chiga, N.; Corsi, A.; Cortés, M. L.; Delbart, A.; Gheller, J. -M.; Giganon, A.; Gillibert, A.; Hilaire, C.; Isobe, T.; Kobayashi, T.; Kubota, Y.; Lapoux, V.; Motobayashi, T.; Murray, I.; Otsu, H.; Panin, V.; Paul, N.; Rodriguez, W.; Sakurai, H.; Sasano, M.; Steppenbeck, D.; Stuhl, L.; Sun, Y. L.; Togano, Y.; Uesaka, T.; Wimmer, K.; Yoneda, K.; Aktas, O.; Aumann, T.; Chung, L. X.; Flavigny, F.; Franchoo, S.; Gašparić, I.; Gerst, R. -B.; Gibelin, J.; Hahn, K. I.; Kim, D.; Koiwai, T.; Kondo, Y.; Koseoglou, P.; Lee, J.; Lehr, C.; Linh, B. D.; Lokotko, T.; MacCormick, M.; Moschner, K.; Nakamura, T.; Park, S. Y.; Rossi, D.; Sahin, E.; Sohler, D.; Söderström, P. -A.; Takeuchi, S.; Törnqvist, H.; Vaquero, V.; Wagner, V.; Wang, S.; Werner, V.; Xu, X.; Yamada, H.; Yan, D.; Yang, Z.; Yasuda, M.; Zanetti, L.

doi:10.1103/PhysRevLett.122.072502

Title: How Robust is the $N = 34$ Subshell Closure? First Spectroscopy of ${}^{52}{Ar}$

Abstract

The first γ-ray spectroscopy of ⁵²Ar, with the neutron number N = 34, was measured using the ⁵³K(p, 2p) one-proton removal reaction at ~210 MeV/u at the RIBF facility. The 2⁺₁ excitation energy is found at 1656(18) keV, the highest among the Ar isotopes with N > 20. This result is the first experimental signature of the persistence of the N = 34 subshell closure beyond ⁵⁴Ca, i.e., below the magic proton number Z = 20. Shell-model calculations with phenomenological and chiral-effective-field-theory interactions both reproduce the measured 2+1 systematics of neutron-rich Ar isotopes, and support a N = 34 subshell closure in ⁵²Ar.

Authors:: Liu, H. N.; Obertelli, A.; Doornenbal, P.; Bertulani, C. A.; Hagen, G.; Holt, J. D.; Jansen, G. R.; Morris, T. D.; Schwenk, A.; Stroberg, R.; Achouri, N.; Baba, H.; Browne, F.; Calvet, D.; Château, F.; Chen, S.; Chiga, N.; Corsi, A.; Cortés, M. L.; Delbart, A. more »« less

Publication Date:: Thu Feb 21 00:00:00 EST 2019

Research Org.:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Oak Ridge Leadership Computing Facility (OLCF)

Sponsoring Org.:: USDOE Office of Science (SC), Advanced Scientific Computing Research (ASCR); USDOE Office of Science (SC), Nuclear Physics (NP)

OSTI Identifier:: 1495555

Alternate Identifier(s):: OSTI ID: 1545567

Grant/Contract Number:: FG02-08ER41533; SC0018223; AC05-00OR22725

Resource Type:: Published Article

Journal Name:: Physical Review Letters

Additional Journal Information:: Journal Name: Physical Review Letters Journal Volume: 122 Journal Issue: 7; Journal ID: ISSN 0031-9007

Publisher:: American Physical Society (APS)

Country of Publication:: United States

Language:: English

Subject:: 73 NUCLEAR PHYSICS AND RADIATION PHYSICS

Citation Formats


                    Liu, H. N., Obertelli, A., Doornenbal, P., Bertulani, C. A., Hagen, G., Holt, J. D., Jansen, G. R., Morris, T. D., Schwenk, A., Stroberg, R., Achouri, N., Baba, H., Browne, F., Calvet, D., Château, F., Chen, S., Chiga, N., Corsi, A., Cortés, M. L., Delbart, A., Gheller, J. -M., Giganon, A., Gillibert, A., Hilaire, C., Isobe, T., Kobayashi, T., Kubota, Y., Lapoux, V., Motobayashi, T., Murray, I., Otsu, H., Panin, V., Paul, N., Rodriguez, W., Sakurai, H., Sasano, M., Steppenbeck, D., Stuhl, L., Sun, Y. L., Togano, Y., Uesaka, T., Wimmer, K., Yoneda, K., Aktas, O., Aumann, T., Chung, L. X., Flavigny, F., Franchoo, S., Gašparić, I., Gerst, R. -B., Gibelin, J., Hahn, K. I., Kim, D., Koiwai, T., Kondo, Y., Koseoglou, P., Lee, J., Lehr, C., Linh, B. D., Lokotko, T., MacCormick, M., Moschner, K., Nakamura, T., Park, S. Y., Rossi, D., Sahin, E., Sohler, D., Söderström, P. -A., Takeuchi, S., Törnqvist, H., Vaquero, V., Wagner, V., Wang, S., Werner, V., Xu, X., Yamada, H., Yan, D., Yang, Z., Yasuda, M., and Zanetti, L. How Robust is the N = 34 Subshell Closure? First Spectroscopy of Ar 52.  United States: N. p., 2019. 
Web.  doi:10.1103/PhysRevLett.122.072502.

Copy to clipboard


                    Liu, H. N., Obertelli, A., Doornenbal, P., Bertulani, C. A., Hagen, G., Holt, J. D., Jansen, G. R., Morris, T. D., Schwenk, A., Stroberg, R., Achouri, N., Baba, H., Browne, F., Calvet, D., Château, F., Chen, S., Chiga, N., Corsi, A., Cortés, M. L., Delbart, A., Gheller, J. -M., Giganon, A., Gillibert, A., Hilaire, C., Isobe, T., Kobayashi, T., Kubota, Y., Lapoux, V., Motobayashi, T., Murray, I., Otsu, H., Panin, V., Paul, N., Rodriguez, W., Sakurai, H., Sasano, M., Steppenbeck, D., Stuhl, L., Sun, Y. L., Togano, Y., Uesaka, T., Wimmer, K., Yoneda, K., Aktas, O., Aumann, T., Chung, L. X., Flavigny, F., Franchoo, S., Gašparić, I., Gerst, R. -B., Gibelin, J., Hahn, K. I., Kim, D., Koiwai, T., Kondo, Y., Koseoglou, P., Lee, J., Lehr, C., Linh, B. D., Lokotko, T., MacCormick, M., Moschner, K., Nakamura, T., Park, S. Y., Rossi, D., Sahin, E., Sohler, D., Söderström, P. -A., Takeuchi, S., Törnqvist, H., Vaquero, V., Wagner, V., Wang, S., Werner, V., Xu, X., Yamada, H., Yan, D., Yang, Z., Yasuda, M., & Zanetti, L. How Robust is the N = 34 Subshell Closure? First Spectroscopy of Ar 52.  United States.  https://doi.org/10.1103/PhysRevLett.122.072502

Copy to clipboard


                    Liu, H. N., Obertelli, A., Doornenbal, P., Bertulani, C. A., Hagen, G., Holt, J. D., Jansen, G. R., Morris, T. D., Schwenk, A., Stroberg, R., Achouri, N., Baba, H., Browne, F., Calvet, D., Château, F., Chen, S., Chiga, N., Corsi, A., Cortés, M. L., Delbart, A., Gheller, J. -M., Giganon, A., Gillibert, A., Hilaire, C., Isobe, T., Kobayashi, T., Kubota, Y., Lapoux, V., Motobayashi, T., Murray, I., Otsu, H., Panin, V., Paul, N., Rodriguez, W., Sakurai, H., Sasano, M., Steppenbeck, D., Stuhl, L., Sun, Y. L., Togano, Y., Uesaka, T., Wimmer, K., Yoneda, K., Aktas, O., Aumann, T., Chung, L. X., Flavigny, F., Franchoo, S., Gašparić, I., Gerst, R. -B., Gibelin, J., Hahn, K. I., Kim, D., Koiwai, T., Kondo, Y., Koseoglou, P., Lee, J., Lehr, C., Linh, B. D., Lokotko, T., MacCormick, M., Moschner, K., Nakamura, T., Park, S. Y., Rossi, D., Sahin, E., Sohler, D., Söderström, P. -A., Takeuchi, S., Törnqvist, H., Vaquero, V., Wagner, V., Wang, S., Werner, V., Xu, X., Yamada, H., Yan, D., Yang, Z., Yasuda, M., and Zanetti, L. Thu .  
"How Robust is the N = 34 Subshell Closure? First Spectroscopy of Ar 52".  United States.  https://doi.org/10.1103/PhysRevLett.122.072502.

Copy to clipboard


                    
@article{osti_1495555,

  title        = {How Robust is the N = 34 Subshell Closure? First Spectroscopy of Ar 52},

  author       = {Liu, H. N. and Obertelli, A. and Doornenbal, P. and Bertulani, C. A. and Hagen, G. and Holt, J. D. and Jansen, G. R. and Morris, T. D. and Schwenk, A. and Stroberg, R. and Achouri, N. and Baba, H. and Browne, F. and Calvet, D. and Château, F. and Chen, S. and Chiga, N. and Corsi, A. and Cortés, M. L. and Delbart, A. and Gheller, J. -M. and Giganon, A. and Gillibert, A. and Hilaire, C. and Isobe, T. and Kobayashi, T. and Kubota, Y. and Lapoux, V. and Motobayashi, T. and Murray, I. and Otsu, H. and Panin, V. and Paul, N. and Rodriguez, W. and Sakurai, H. and Sasano, M. and Steppenbeck, D. and Stuhl, L. and Sun, Y. L. and Togano, Y. and Uesaka, T. and Wimmer, K. and Yoneda, K. and Aktas, O. and Aumann, T. and Chung, L. X. and Flavigny, F. and Franchoo, S. and Gašparić, I. and Gerst, R. -B. and Gibelin, J. and Hahn, K. I. and Kim, D. and Koiwai, T. and Kondo, Y. and Koseoglou, P. and Lee, J. and Lehr, C. and Linh, B. D. and Lokotko, T. and MacCormick, M. and Moschner, K. and Nakamura, T. and Park, S. Y. and Rossi, D. and Sahin, E. and Sohler, D. and Söderström, P. -A. and Takeuchi, S. and Törnqvist, H. and Vaquero, V. and Wagner, V. and Wang, S. and Werner, V. and Xu, X. and Yamada, H. and Yan, D. and Yang, Z. and Yasuda, M. and Zanetti, L.},

  abstractNote = {The first γ-ray spectroscopy of 52Ar, with the neutron number N = 34, was measured using the 53K(p, 2p) one-proton removal reaction at ~210 MeV/u at the RIBF facility. The 2+1 excitation energy is found at 1656(18) keV, the highest among the Ar isotopes with N > 20. This result is the first experimental signature of the persistence of the N = 34 subshell closure beyond 54Ca, i.e., below the magic proton number Z = 20. Shell-model calculations with phenomenological and chiral-effective-field-theory interactions both reproduce the measured 2+1 systematics of neutron-rich Ar isotopes, and support a N = 34 subshell closure in 52Ar.},

  doi          = {10.1103/PhysRevLett.122.072502},

  journal      = {Physical Review Letters},

  number       = 7,

  volume       = 122,

  place        = {United States},

  year         = {Thu Feb 21 00:00:00 EST 2019},

  month        = {Thu Feb 21 00:00:00 EST 2019}

}

Copy to clipboard

Journal Article:

Free Publicly Available Full Text

Publisher's Version of Record
https://doi.org/10.1103/PhysRevLett.122.072502

Other availability

Search WorldCat to find libraries that may hold this journal

Citation Metrics:

Cited by: 47 works

Citation information provided by
Web of Science

Save / Share:

Export Metadata

Save to My Library

Works referenced in this record:

Direct mass measurements of neutron-rich ⁸⁶ Kr projectile fragments and the persistence of neutron magic number N =32 in Sc isotopes
journal, October 2015

Xu, Xing; Wang, Meng; Zhang, Yu-Hu
Chinese Physics C, Vol. 39, Issue 10
DOI: 10.1088/1674-1137/39/10/104001

Dawning of the $N = 32$ Shell Closure Seen through Precision Mass Measurements of Neutron-Rich Titanium Isotopes
journal, February 2018

Leistenschneider, E.; Reiter, M. P.; Ayet San Andrés, S.
Physical Review Letters, Vol. 120, Issue 6
DOI: 10.1103/PhysRevLett.120.062503

Toward open-shell nuclei with coupled-cluster theory
journal, May 2011

Jansen, G. R.; Hjorth-Jensen, M.; Hagen, G.
Physical Review C, Vol. 83, Issue 5
DOI: 10.1103/PhysRevC.83.054306

Ground and excited states of doubly open-shell nuclei from ab initio valence-space Hamiltonians
journal, May 2016

Stroberg, S. R.; Hergert, H.; Holt, J. D.
Physical Review C, Vol. 93, Issue 5
DOI: 10.1103/PhysRevC.93.051301

Nuclear magic numbers: New features far from stability
journal, October 2008

Sorlin, O.; Porquet, M. -G.
Progress in Particle and Nuclear Physics, Vol. 61, Issue 2
DOI: 10.1016/j.ppnp.2008.05.001

MINOS: A vertex tracker coupled to a thick liquid-hydrogen target for in-beam spectroscopy of exotic nuclei
journal, January 2014

Obertelli, A.; Delbart, A.; Anvar, S.
The European Physical Journal A, Vol. 50, Issue 1
DOI: 10.1140/epja/i2014-14008-y

Improved nuclear matter calculations from chiral low-momentum interactions
journal, March 2011

Hebeler, K.; Bogner, S. K.; Furnstahl, R. J.
Physical Review C, Vol. 83, Issue 3
DOI: 10.1103/PhysRevC.83.031301

Evolution of Nuclear Shells due to the Tensor Force
journal, November 2005

Otsuka, Takaharu; Suzuki, Toshio; Fujimoto, Rintaro
Physical Review Letters, Vol. 95, Issue 23
DOI: 10.1103/PhysRevLett.95.232502

The AME2016 atomic mass evaluation (II). Tables, graphs and references
journal, March 2017

Wang, Meng; Audi, G.; Kondev, F. G.
Chinese Physics C, Vol. 41, Issue 3
DOI: 10.1088/1674-1137/41/3/030003

Quasifree ( $p$ , $2 p$ ) Reactions on Oxygen Isotopes: Observation of Isospin Independence of the Reduced Single-Particle Strength
journal, January 2018

Atar, L.; Paschalis, S.; Barbieri, C.
Physical Review Letters, Vol. 120, Issue 5
DOI: 10.1103/PhysRevLett.120.052501

Exclusive quasi-free proton knockout from oxygen isotopes at intermediate energies
journal, February 2018

Kawase, Shoichiro; Uesaka, Tomohiro; Tang, Tsz Leung
Progress of Theoretical and Experimental Physics, Vol. 2018, Issue 2
DOI: 10.1093/ptep/pty011

Varying shell gap and deformation in $N \sim 20$ unstable nuclei studied by the Monte Carlo shell model
journal, October 1999

Utsuno, Yutaka; Otsuka, Takaharu; Mizusaki, Takahiro
Physical Review C, Vol. 60, Issue 5
DOI: 10.1103/PhysRevC.60.054315

Collapse of the $N = 28$ Shell Closure in ${}^{42}S i$
journal, July 2007

Bastin, B.; Grévy, S.; Sohler, D.
Physical Review Letters, Vol. 99, Issue 2
DOI: 10.1103/PhysRevLett.99.022503

Saturation with chiral interactions and consequences for finite nuclei
journal, July 2017

Simonis, J.; Stroberg, S. R.; Hebeler, K.
Physical Review C, Vol. 96, Issue 1
DOI: 10.1103/PhysRevC.96.014303

Evidence for a new nuclear ‘magic number’ from the level structure of 54Ca
journal, October 2013

Steppenbeck, D.; Takeuchi, S.; Aoi, N.
Nature, Vol. 502, Issue 7470
DOI: 10.1038/nature12522

Spins and Magnetic Moments of ${}^{49}K$ and ${}^{51}K$ : Establishing the $1 / 2^{+}$ and $3 / 2^{+}$ Level Ordering Beyond $N = 28$
journal, April 2013

Papuga, J.; Bissell, M. L.; Kreim, K.
Physical Review Letters, Vol. 110, Issue 17
DOI: 10.1103/PhysRevLett.110.172503

Coupled-cluster computations of atomic nuclei
journal, September 2014

Hagen, G.; Papenbrock, T.; Hjorth-Jensen, M.
Reports on Progress in Physics, Vol. 77, Issue 9
DOI: 10.1088/0034-4885/77/9/096302

Direct measurement of the masses of ${}^{11}{Li}$ and ${}^{26 - 32}{Na}$ with an on-line mass spectrometer
journal, August 1975

Thibault, C.; Klapisch, R.; Rigaud, C.
Physical Review C, Vol. 12, Issue 2
DOI: 10.1103/PhysRevC.12.644

New Magic Number, $N = 16$ , near the Neutron Drip Line
journal, June 2000

Ozawa, A.; Kobayashi, T.; Suzuki, T.
Physical Review Letters, Vol. 84, Issue 24
DOI: 10.1103/PhysRevLett.84.5493

Identification and separation of radioactive isotope beams by the BigRIPS separator at the RIKEN RI Beam Factory
journal, December 2013

Fukuda, N.; Kubo, T.; Ohnishi, T.
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Vol. 317
DOI: 10.1016/j.nimb.2013.08.048

Coupled-cluster theory in quantum chemistry
journal, February 2007

Bartlett, Rodney J.; Musiał, Monika
Reviews of Modern Physics, Vol. 79, Issue 1
DOI: 10.1103/RevModPhys.79.291

Probing the $N = 32$ Shell Closure below the Magic Proton Number $Z = 20$ : Mass Measurements of the Exotic Isotopes ${}^{52, 53}K$
journal, May 2015

Rosenbusch, M.; Ascher, P.; Atanasov, D.
Physical Review Letters, Vol. 114, Issue 20
DOI: 10.1103/PhysRevLett.114.202501

Evolution of Shell Structure in Neutron-Rich Calcium Isotopes
journal, July 2012

Hagen, G.; Hjorth-Jensen, M.; Jansen, G. R.
Physical Review Letters, Vol. 109, Issue 3
DOI: 10.1103/PhysRevLett.109.032502

Pauli blocking and medium effects in nucleon knockout reactions
journal, June 2010

Bertulani, C. A.; De Conti, C.
Physical Review C, Vol. 81, Issue 6
DOI: 10.1103/PhysRevC.81.064603

Collectivity of neutron-rich Ti isotopes
journal, August 2013

Suzuki, H.; Aoi, N.; Takeshita, E.
Physical Review C, Vol. 88, Issue 2
DOI: 10.1103/PhysRevC.88.024326

Nucleus-Dependent Valence-Space Approach to Nuclear Structure
journal, January 2017

Stroberg, S. R.; Calci, A.; Hergert, H.
Physical Review Letters, Vol. 118, Issue 3
DOI: 10.1103/PhysRevLett.118.032502

Discovery of ${}^{60}{Ca}$ and Implications For the Stability of ${}^{70}{Ca}$
journal, July 2018

Tarasov, O. B.; Ahn, D. S.; Bazin, D.
Physical Review Letters, Vol. 121, Issue 2
DOI: 10.1103/PhysRevLett.121.022501

Chiral effective field theory and nuclear forces
journal, June 2011

Machleidt, R.; Entem, D. R.
Physics Reports, Vol. 503, Issue 1
DOI: 10.1016/j.physrep.2011.02.001

Magic Nature of Neutrons in ${}^{54}{Ca}$ : First Mass Measurements of ${}^{55 - 57}{Ca}$
journal, July 2018

Michimasa, S.; Kobayashi, M.; Kiyokawa, Y.
Physical Review Letters, Vol. 121, Issue 2
DOI: 10.1103/PhysRevLett.121.022506

Level structure of the neutron-rich ${}^{56, 58, 60}{Cr}$ isotopes: Single-particle and collective aspects
journal, December 2006

Zhu, S.; Deacon, A. N.; Freeman, S. J.
Physical Review C, Vol. 74, Issue 6
DOI: 10.1103/PhysRevC.74.064315

Exploring $s d$ -shell nuclei from two- and three-nucleon interactions with realistic saturation properties
journal, January 2016

Simonis, J.; Hebeler, K.; Holt, J. D.
Physical Review C, Vol. 93, Issue 1
DOI: 10.1103/PhysRevC.93.011302

Order of Levels in the Shell Model and Spin of ${Be}^{11}$
journal, May 1960

Talmi, I.; Unna, I.
Physical Review Letters, Vol. 4, Issue 9
DOI: 10.1103/PhysRevLett.4.469

DALI2: A NaI(Tl) detector array for measurements of γ rays from fast nuclei
journal, November 2014

Takeuchi, S.; Motobayashi, T.; Togano, Y.
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 763
DOI: 10.1016/j.nima.2014.06.087

Modern theory of nuclear forces
journal, December 2009

Epelbaum, E.; Hammer, H. -W.; Meißner, Ulf-G.
Reviews of Modern Physics, Vol. 81, Issue 4
DOI: 10.1103/RevModPhys.81.1773

Quasi-elastic electron scattering off nuclei
journal, March 1993

Lapikás, L.
Nuclear Physics A, Vol. 553
DOI: 10.1016/0375-9474(93)90630-G

$N = 16$ Spherical Shell Closure in ${}^{24}O$
journal, July 2012

Tshoo, K.; Satou, Y.; Bhang, H.
Physical Review Letters, Vol. 109, Issue 2
DOI: 10.1103/PhysRevLett.109.022501

Shape coexistence and other aspects of nuclear structure in40Ar
journal, August 1983

Bitterwolf, E.; Burkard, A.; Betz, P.
Zeitschrift für Physik A Atoms and Nuclei, Vol. 313, Issue 1-2
DOI: 10.1007/BF02115850

Quasifree ( $p$ , $2 p$ ) and ( $p$ , $p n$ ) reactions with unstable nuclei
journal, December 2013

Aumann, T.; Bertulani, C. A.; Ryckebusch, J.
Physical Review C, Vol. 88, Issue 6
DOI: 10.1103/PhysRevC.88.064610

Novel Features of Nuclear Forces and Shell Evolution in Exotic Nuclei
journal, January 2010

Otsuka, Takaharu; Suzuki, Toshio; Honma, Michio
Physical Review Letters, Vol. 104, Issue 1
DOI: 10.1103/PhysRevLett.104.012501

Structure of ${}^{55}{Sc}$ and development of the $N = 34$ subshell closure
journal, December 2017

Steppenbeck, D.; Takeuchi, S.; Aoi, N.
Physical Review C, Vol. 96, Issue 6
DOI: 10.1103/PhysRevC.96.064310

In-medium similarity renormalization group for open-shell nuclei
journal, June 2012

Tsukiyama, K.; Bogner, S. K.; Schwenk, A.
Physical Review C, Vol. 85, Issue 6
DOI: 10.1103/PhysRevC.85.061304

The In-Medium Similarity Renormalization Group: A novel ab initio method for nuclei
journal, March 2016

Hergert, H.; Bogner, S. K.; Morris, T. D.
Physics Reports, Vol. 621
DOI: 10.1016/j.physrep.2015.12.007

Beta decay of the new isotopes ${}^{52}K$ , ${}^{52}{Ca}$ , and ${}^{52}{Sc}$ ; a test of the shell model far from stability
journal, June 1985

Huck, A.; Klotz, G.; Knipper, A.
Physical Review C, Vol. 31, Issue 6
DOI: 10.1103/PhysRevC.31.2226

Relativistic Coulomb excitation of neutron-rich 54,56,58Cr: On the pathway of magicity from <mml:math altimg="si1.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:mi>N</mml:mi><mml:mo>=</mml:mo><mml:mn>40</mml:mn></mml:math> to <mml:math altimg="si2.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:mi>N</mml:mi><mml:mo>=</mml:mo><mml:mn>32</mml:mn></mml:math>
journal, August 2005

Bürger, A.; Saito, T. R.; Grawe, H.
Physics Letters B, Vol. 622, Issue 1-2
DOI: 10.1016/j.physletb.2005.07.004

Nonobservable nature of the nuclear shell structure: Meaning, illustrations, and consequences
journal, September 2015

Duguet, T.; Hergert, H.; Holt, J. D.
Physical Review C, Vol. 92, Issue 3
DOI: 10.1103/PhysRevC.92.034313

Masses of exotic calcium isotopes pin down nuclear forces
journal, June 2013

Wienholtz, F.; Beck, D.; Blaum, K.
Nature, Vol. 498, Issue 7454
DOI: 10.1038/nature12226

Iterative and non-iterative triple excitation corrections in coupled-cluster methods for excited electronic states: the EOM-CCSDT-3 and EOM-CCSD(T̃) methods
journal, August 1996

Watts, John D.; Bartlett, Rodney J.
Chemical Physics Letters, Vol. 258, Issue 5-6
DOI: 10.1016/0009-2614(96)00708-7

Three-Body Monopole Corrections to Realistic Interactions
journal, January 2003

Zuker, A. P.
Physical Review Letters, Vol. 90, Issue 4
DOI: 10.1103/PhysRevLett.90.042502

Accurate nuclear radii and binding energies from a chiral interaction
journal, May 2015

Ekström, A.; Jansen, G. R.; Wendt, K. A.
Physical Review C, Vol. 91, Issue 5
DOI: 10.1103/PhysRevC.91.051301

Geant4—a simulation toolkit
journal, July 2003

Agostinelli, S.; Allison, J.; Amako, K.
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 506, Issue 3
DOI: 10.1016/S0168-9002(03)01368-8

β-Decay schemes of very neutron-rich sodium isotopes and their descendants
journal, September 1984

Guillemaud-Mueller, D.; Detraz, C.; Langevin, M.
Nuclear Physics A, Vol. 426, Issue 1
DOI: 10.1016/0375-9474(84)90064-2

SAMURAI spectrometer for RI beam experiments
journal, December 2013

Kobayashi, T.; Chiga, N.; Isobe, T.
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Vol. 317
DOI: 10.1016/j.nimb.2013.05.089

Recent Advances in Shell Evolution with Shell-Model Calculations
conference, June 2015

Utsuno, Yutaka; Otsuka, Takaharu; Tsunoda, Yusuke
Proceedings of the Conference on Advances in Radioactive Isotope Science (ARIS2014)
DOI: 10.7566/JPSCP.6.010007

Shape transitions in exotic Si and S isotopes and tensor-force-driven Jahn-Teller effect
journal, November 2012

Utsuno, Yutaka; Otsuka, Takaharu; Brown, B. Alex
Physical Review C, Vol. 86, Issue 5
DOI: 10.1103/PhysRevC.86.051301

Reduced transition probabilities to the first $2^{+}$ state in ${}^{52, 54, 56}{Ti}$ and development of shell closures at $N = 32, 34$
journal, April 2005

Dinca, D. -C.; Janssens, R. V. F.; Gade, A.
Physical Review C, Vol. 71, Issue 4
DOI: 10.1103/PhysRevC.71.041302

Unexpectedly large charge radii of neutron-rich calcium isotopes
journal, February 2016

Garcia Ruiz, R. F.; Bissell, M. L.; Blaum, K.
Nature Physics, Vol. 12, Issue 6
DOI: 10.1038/nphys3645

New effective interaction for $0 ℏ ω$ shell-model calculations in the $sd − pf$ valence space
journal, January 2009

Nowacki, F.; Poves, A.
Physical Review C, Vol. 79, Issue 1
DOI: 10.1103/PhysRevC.79.014310

Structure of 52,54Ti and shell closures in neutron-rich nuclei above 48Ca
journal, October 2002

Janssens, R. V. F.; Fornal, B.; Mantica, P. F.
Physics Letters B, Vol. 546, Issue 1-2
DOI: 10.1016/S0370-2693(02)02682-5

New evidence for a subshell gap at N=32
journal, June 2001

Prisciandaro, J. I.; Mantica, P. F.; Brown, B. A.
Physics Letters B, Vol. 510, Issue 1-4
DOI: 10.1016/S0370-2693(01)00565-2

Transition Probability from the Ground to the First-Excited 2+ State of Even–Even Nuclides
journal, May 2001

Raman, S.; Nestor, C. W.; Tikkanen, P.
Atomic Data and Nuclear Data Tables, Vol. 78, Issue 1
DOI: 10.1006/adnd.2001.0858

Low-Lying Structure of ${}^{50}{Ar}$ and the $N = 32$ Subshell Closure
journal, June 2015

Steppenbeck, D.; Takeuchi, S.; Aoi, N.
Physical Review Letters, Vol. 114, Issue 25
DOI: 10.1103/PhysRevLett.114.252501

BigRIPS separator and ZeroDegree spectrometer at RIKEN RI Beam Factory
journal, January 2012

Kubo, Toshiyuki; Kameda, Daisuke; Suzuki, Hiroshi
Progress of Theoretical and Experimental Physics, Vol. 2012, Issue 1
DOI: 10.1093/ptep/pts064

Tracking with the MINOS Time Projection Chamber
journal, October 2018

Santamaria, C.; Obertelli, A.; Ota, S.
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 905
DOI: 10.1016/j.nima.2018.07.053

Spectroscopy of ${}^{46}{Ar}$ by the $(t, p)$ two-neutron transfer reaction
journal, April 2016

Nowak, K.; Wimmer, K.; Hellgartner, S.
Physical Review C, Vol. 93, Issue 4
DOI: 10.1103/PhysRevC.93.044335

Similar Records in DOE PAGES and OSTI.GOV collections:

In-Beam $γ$ -Ray Spectroscopy of ${}^{34, 36, 38}{Mg}$ : Merging the $N = 20$ and $N = 28$ Shell Quenching

Journal Article Doornenbal, P. ; Scheit, H. ; Takeuchi, S. ; ... - Physical Review Letters

Neutron-rich N = 22, 24, 26 magnesium isotopes were studied in this paper via in-beam γ-ray spectroscopy at the RIKEN Radioactive Isotope Beam Factory following secondary fragmentation reactions on a carbon target at ≈ 200 MeV /nucleon. In the one- and two-proton removal channels from ³⁹Al and ⁴⁰Si beams, two distinct γ-ray transitions were observed in ³⁸Mg, while in the one-proton removal reaction from ³⁷Al a new transition was observed in addition to the known 2⁺₁ → 0 ⁺_g.s. decay. From the experimental systematics and comparison to theoretical predictions it is concluded that the transitions belong to the 2⁺₁ →more »« less
https://doi.org/10.1103/PhysRevLett.111.212502
Proton Shell Evolution below ${}^{132}{Sn}$ : First Measurement of Low-Lying $β$ -Emitting Isomers in ${}^{123, 125}{Ag}$

Journal Article Chen, Z. Q. ; Li, Z. H. ; Hua, H. ; ... - Physical Review Letters

The β-delayed γ-ray spectroscopy of neutron-rich ^123,125Ag isotopes is investigated at the Radioactive Isotope Beam Factory of RIKEN, and the long-predicted 1/2^- β-emitting isomers in ^123,125Ag are identified for the first time. With the new experimental results, the systematic trend of energy spacing between the lowest 9/2⁺ and 1/2^- levels is extended in Ag isotopes up to N = 78, providing a clear signal for the reduction of the Z = 40 subshell gap in Ag towards N = 82. Shell-model calculations with the state-of-the-art V_MU plus M3Y spin-orbit interaction give a satisfactory description of the low-lying states in ^123,125Ag.more »« less
Cited by 15
https://doi.org/10.1103/PhysRevLett.122.212502

Full Text Available
Charge Radius of the Short-Lived ${}^{68}{Ni}$ and Correlation with the Dipole Polarizability

Journal Article Kaufmann, S. ; Simonis, J. ; Bacca, S. ; ... - Physical Review Letters

We present the first laser spectroscopic measurement of the neutron-rich nucleus ⁶⁸Ni at the N = 40 subshell closure and extract its nuclear charge radius. Since this is the only short-lived isotope for which the dipole polarizabilitymore »« less
Cited by 25
https://doi.org/10.1103/PhysRevLett.124.132502
Shell-model studies of the astrophysical $r p$ -process reactions ${}^{34}S (p, γ) {}^{35}{Cl}$ and ${}^{34 g, m}{Cl} (p, γ) {}^{35}{Ar}$

Journal Article Richter, W. A. ; Brown, B. A. ; Longland, R. ; ... - Physical Review C

Bmore »« less
https://doi.org/10.1103/physrevc.102.025801

Full Text Available
Charge radii of neutron deficient ${}^{52, 53}{Fe}$ produced by projectile fragmentation

Journal Article Minamisono, Kei ; Rossi, D. M. ; Beerwerth, R. ; ... - Physical Review Letters

Bunched-beam collinear laser spectroscopy is performed on neutron deficient ^52,53Fe prepared through in-flight separation followed by a gas stopping. This novel scheme is a major step to reach nuclides far from the stability line in laser spectroscopy. Differential mean-square charge radii δmore »« less
Cited by 38
https://doi.org/10.1103/PhysRevLett.117.252501

Full Text Available

Similar Records

Title: How Robust is the N = 34 Subshell Closure? First Spectroscopy of Ar 52

Abstract

Citation Formats

Direct mass measurements of neutron-rich 86 Kr projectile fragments and the persistence of neutron magic number N =32 in Sc isotopes journal, October 2015

Dawning of the N = 32 Shell Closure Seen through Precision Mass Measurements of Neutron-Rich Titanium Isotopes journal, February 2018

Toward open-shell nuclei with coupled-cluster theory journal, May 2011

Ground and excited states of doubly open-shell nuclei from ab initio valence-space Hamiltonians journal, May 2016

Nuclear magic numbers: New features far from stability journal, October 2008

MINOS: A vertex tracker coupled to a thick liquid-hydrogen target for in-beam spectroscopy of exotic nuclei journal, January 2014

Improved nuclear matter calculations from chiral low-momentum interactions journal, March 2011

Evolution of Nuclear Shells due to the Tensor Force journal, November 2005

The AME2016 atomic mass evaluation (II). Tables, graphs and references journal, March 2017

Quasifree ( p , 2 p ) Reactions on Oxygen Isotopes: Observation of Isospin Independence of the Reduced Single-Particle Strength journal, January 2018

Exclusive quasi-free proton knockout from oxygen isotopes at intermediate energies journal, February 2018

Varying shell gap and deformation in N ∼ 20 unstable nuclei studied by the Monte Carlo shell model journal, October 1999

Collapse of the N = 28 Shell Closure in S 42 i journal, July 2007

Saturation with chiral interactions and consequences for finite nuclei journal, July 2017

Evidence for a new nuclear ‘magic number’ from the level structure of 54Ca journal, October 2013

Spins and Magnetic Moments of K 49 and K 51 : Establishing the 1 / 2 + and 3 / 2 + Level Ordering Beyond N = 28 journal, April 2013

Coupled-cluster computations of atomic nuclei journal, September 2014

Direct measurement of the masses of Li 11 and Na 2 6 − 3 2 with an on-line mass spectrometer journal, August 1975

New Magic Number, N = 16 , near the Neutron Drip Line journal, June 2000

Identification and separation of radioactive isotope beams by the BigRIPS separator at the RIKEN RI Beam Factory journal, December 2013

Coupled-cluster theory in quantum chemistry journal, February 2007

Probing the N = 32 Shell Closure below the Magic Proton Number Z = 20 : Mass Measurements of the Exotic Isotopes K 52 , 53 journal, May 2015

Evolution of Shell Structure in Neutron-Rich Calcium Isotopes journal, July 2012

Pauli blocking and medium effects in nucleon knockout reactions journal, June 2010

Collectivity of neutron-rich Ti isotopes journal, August 2013

Nucleus-Dependent Valence-Space Approach to Nuclear Structure journal, January 2017

Discovery of Ca 60 and Implications For the Stability of Ca 70 journal, July 2018

Chiral effective field theory and nuclear forces journal, June 2011

Magic Nature of Neutrons in Ca 54 : First Mass Measurements of Ca 55 – 57 journal, July 2018

Level structure of the neutron-rich Cr 56 , 58 , 60 isotopes: Single-particle and collective aspects journal, December 2006

Exploring s d -shell nuclei from two- and three-nucleon interactions with realistic saturation properties journal, January 2016

Order of Levels in the Shell Model and Spin of Be 11 journal, May 1960

DALI2: A NaI(Tl) detector array for measurements of γ rays from fast nuclei journal, November 2014

Modern theory of nuclear forces journal, December 2009

Quasi-elastic electron scattering off nuclei journal, March 1993

N = 16 Spherical Shell Closure in O 24 journal, July 2012

Shape coexistence and other aspects of nuclear structure in40Ar journal, August 1983

Quasifree ( p , 2 p ) and ( p , p n ) reactions with unstable nuclei journal, December 2013

Novel Features of Nuclear Forces and Shell Evolution in Exotic Nuclei journal, January 2010

Structure of Sc 55 and development of the N = 34 subshell closure journal, December 2017

In-medium similarity renormalization group for open-shell nuclei journal, June 2012

The In-Medium Similarity Renormalization Group: A novel ab initio method for nuclei journal, March 2016

Beta decay of the new isotopes K 52 , Ca 52 , and Sc 52 ; a test of the shell model far from stability journal, June 1985

Nonobservable nature of the nuclear shell structure: Meaning, illustrations, and consequences journal, September 2015

Masses of exotic calcium isotopes pin down nuclear forces journal, June 2013

Iterative and non-iterative triple excitation corrections in coupled-cluster methods for excited electronic states: the EOM-CCSDT-3 and EOM-CCSD(T̃) methods journal, August 1996

Three-Body Monopole Corrections to Realistic Interactions journal, January 2003

Accurate nuclear radii and binding energies from a chiral interaction journal, May 2015

Geant4—a simulation toolkit journal, July 2003

β-Decay schemes of very neutron-rich sodium isotopes and their descendants journal, September 1984

SAMURAI spectrometer for RI beam experiments journal, December 2013

Recent Advances in Shell Evolution with Shell-Model Calculations conference, June 2015

Shape transitions in exotic Si and S isotopes and tensor-force-driven Jahn-Teller effect journal, November 2012

Reduced transition probabilities to the first 2 + state in Ti 52 , 54 , 56 and development of shell closures at N = 32 , 34 journal, April 2005

Unexpectedly large charge radii of neutron-rich calcium isotopes journal, February 2016

New effective interaction for 0 ℏ ω shell-model calculations in the sd − pf valence space journal, January 2009

Structure of 52,54Ti and shell closures in neutron-rich nuclei above 48Ca journal, October 2002

New evidence for a subshell gap at N=32 journal, June 2001

Transition Probability from the Ground to the First-Excited 2+ State of Even–Even Nuclides journal, May 2001

Low-Lying Structure of Ar 50 and the N = 32 Subshell Closure journal, June 2015

BigRIPS separator and ZeroDegree spectrometer at RIKEN RI Beam Factory journal, January 2012

Tracking with the MINOS Time Projection Chamber journal, October 2018

Spectroscopy of Ar 46 by the ( t , p ) two-neutron transfer reaction journal, April 2016

Title: How Robust is the $N = 34$ Subshell Closure? First Spectroscopy of ${}^{52}{Ar}$

Direct mass measurements of neutron-rich ⁸⁶ Kr projectile fragments and the persistence of neutron magic number N =32 in Sc isotopes
journal, October 2015

Dawning of the $N = 32$ Shell Closure Seen through Precision Mass Measurements of Neutron-Rich Titanium Isotopes
journal, February 2018

Toward open-shell nuclei with coupled-cluster theory
journal, May 2011

Ground and excited states of doubly open-shell nuclei from ab initio valence-space Hamiltonians
journal, May 2016

Nuclear magic numbers: New features far from stability
journal, October 2008

MINOS: A vertex tracker coupled to a thick liquid-hydrogen target for in-beam spectroscopy of exotic nuclei
journal, January 2014

Improved nuclear matter calculations from chiral low-momentum interactions
journal, March 2011

Evolution of Nuclear Shells due to the Tensor Force
journal, November 2005

The AME2016 atomic mass evaluation (II). Tables, graphs and references
journal, March 2017

Quasifree ( $p$ , $2 p$ ) Reactions on Oxygen Isotopes: Observation of Isospin Independence of the Reduced Single-Particle Strength
journal, January 2018

Exclusive quasi-free proton knockout from oxygen isotopes at intermediate energies
journal, February 2018

Varying shell gap and deformation in $N \sim 20$ unstable nuclei studied by the Monte Carlo shell model
journal, October 1999

Collapse of the $N = 28$ Shell Closure in ${}^{42}S i$
journal, July 2007

Saturation with chiral interactions and consequences for finite nuclei
journal, July 2017

Evidence for a new nuclear ‘magic number’ from the level structure of 54Ca
journal, October 2013

Spins and Magnetic Moments of ${}^{49}K$ and ${}^{51}K$ : Establishing the $1 / 2^{+}$ and $3 / 2^{+}$ Level Ordering Beyond $N = 28$
journal, April 2013

Coupled-cluster computations of atomic nuclei
journal, September 2014

Direct measurement of the masses of ${}^{11}{Li}$ and ${}^{26 - 32}{Na}$ with an on-line mass spectrometer
journal, August 1975

New Magic Number, $N = 16$ , near the Neutron Drip Line
journal, June 2000

Identification and separation of radioactive isotope beams by the BigRIPS separator at the RIKEN RI Beam Factory
journal, December 2013

Coupled-cluster theory in quantum chemistry
journal, February 2007

Probing the $N = 32$ Shell Closure below the Magic Proton Number $Z = 20$ : Mass Measurements of the Exotic Isotopes ${}^{52, 53}K$
journal, May 2015

Evolution of Shell Structure in Neutron-Rich Calcium Isotopes
journal, July 2012

Pauli blocking and medium effects in nucleon knockout reactions
journal, June 2010

Collectivity of neutron-rich Ti isotopes
journal, August 2013

Nucleus-Dependent Valence-Space Approach to Nuclear Structure
journal, January 2017

Discovery of ${}^{60}{Ca}$ and Implications For the Stability of ${}^{70}{Ca}$
journal, July 2018

Chiral effective field theory and nuclear forces
journal, June 2011

Magic Nature of Neutrons in ${}^{54}{Ca}$ : First Mass Measurements of ${}^{55 - 57}{Ca}$
journal, July 2018

Level structure of the neutron-rich ${}^{56, 58, 60}{Cr}$ isotopes: Single-particle and collective aspects
journal, December 2006

Exploring $s d$ -shell nuclei from two- and three-nucleon interactions with realistic saturation properties
journal, January 2016

Order of Levels in the Shell Model and Spin of ${Be}^{11}$
journal, May 1960

DALI2: A NaI(Tl) detector array for measurements of γ rays from fast nuclei
journal, November 2014

Modern theory of nuclear forces
journal, December 2009

Quasi-elastic electron scattering off nuclei
journal, March 1993

$N = 16$ Spherical Shell Closure in ${}^{24}O$
journal, July 2012

Shape coexistence and other aspects of nuclear structure in40Ar
journal, August 1983

Quasifree ( $p$ , $2 p$ ) and ( $p$ , $p n$ ) reactions with unstable nuclei
journal, December 2013

Novel Features of Nuclear Forces and Shell Evolution in Exotic Nuclei
journal, January 2010

Structure of ${}^{55}{Sc}$ and development of the $N = 34$ subshell closure
journal, December 2017

In-medium similarity renormalization group for open-shell nuclei
journal, June 2012

The In-Medium Similarity Renormalization Group: A novel ab initio method for nuclei
journal, March 2016

Beta decay of the new isotopes ${}^{52}K$ , ${}^{52}{Ca}$ , and ${}^{52}{Sc}$ ; a test of the shell model far from stability
journal, June 1985

Nonobservable nature of the nuclear shell structure: Meaning, illustrations, and consequences
journal, September 2015

Masses of exotic calcium isotopes pin down nuclear forces
journal, June 2013

Iterative and non-iterative triple excitation corrections in coupled-cluster methods for excited electronic states: the EOM-CCSDT-3 and EOM-CCSD(T̃) methods
journal, August 1996

Three-Body Monopole Corrections to Realistic Interactions
journal, January 2003

Accurate nuclear radii and binding energies from a chiral interaction
journal, May 2015

Geant4—a simulation toolkit
journal, July 2003

β-Decay schemes of very neutron-rich sodium isotopes and their descendants
journal, September 1984

SAMURAI spectrometer for RI beam experiments
journal, December 2013

Recent Advances in Shell Evolution with Shell-Model Calculations
conference, June 2015

Shape transitions in exotic Si and S isotopes and tensor-force-driven Jahn-Teller effect
journal, November 2012

Reduced transition probabilities to the first $2^{+}$ state in ${}^{52, 54, 56}{Ti}$ and development of shell closures at $N = 32, 34$
journal, April 2005

Unexpectedly large charge radii of neutron-rich calcium isotopes
journal, February 2016

New effective interaction for $0 ℏ ω$ shell-model calculations in the $sd − pf$ valence space
journal, January 2009

Structure of 52,54Ti and shell closures in neutron-rich nuclei above 48Ca
journal, October 2002

New evidence for a subshell gap at N=32
journal, June 2001

Transition Probability from the Ground to the First-Excited 2+ State of Even–Even Nuclides
journal, May 2001

Low-Lying Structure of ${}^{50}{Ar}$ and the $N = 32$ Subshell Closure
journal, June 2015

BigRIPS separator and ZeroDegree spectrometer at RIKEN RI Beam Factory
journal, January 2012

Tracking with the MINOS Time Projection Chamber
journal, October 2018

Spectroscopy of ${}^{46}{Ar}$ by the $(t, p)$ two-neutron transfer reaction
journal, April 2016