Intruder configurations in 29Ne at the transition into the island of inversion: Detailed structure study of 28Ne

Wang, H.; Yasuda, M.; Kondo, Y.; Nakamura, T.; Tostevin, J. A.; Ogata, K.; Otsuka, T.; Poves, A.; Shimizu, N.; Yoshida, K.; Achouri, N. L.; Al Falou, H.; Atar, L.; Aumann, T.; Baba, H.; Boretzky, K.; Caesar, C.; Calvet, D.; Chae, H.; Chiga, N.; Corsi, A.; Crawford, H. L.; Delaunay, F.; Delbart, A.; Deshayes, Q.; Dombrádi, Zs; Douma, C.; Elekes, Z.; Fallon, P.; Gašparić, I.; Gheller, J. -M.; Gibelin, J.; Gillibert, A.; Harakeh, M. N.; Hirayama, A.; Hoffman, C. R.; Holl, M.; Horvat, A.; Horváth, Á.; Hwang, J. W.; Isobe, T.; Kahlbow, J.; Kalantar-Nayestanaki, N.; Kawase, S.; Kim, S.; Kisamori, K.; Kobayashi, T.; Körper, D.; Koyama, S.; Kuti, I.; Lapoux, V.; Lindberg, S.; Marqués, F. M.; Masuoka, S.; Mayer, J.; Miki, K.; Murakami, T.; Najafi, M. A.; Nakano, K.; Nakatsuka, N.; Nilsson, T.; Obertelli, A.; Orr, N. A.; Otsu, H.; Ozaki, T.; Panin, V.; Paschalis, S.; Revel, A.; Rossi, D.; Saito, A. T.; Saito, T.; Sasano, M.; Sato, H.; Satou, Y.; Scheit, H.; Schindler, F.; Schrock, P.; Shikata, M.; Shimizu, Y.; Simon, H.; Sohler, D.; Sorlin, O.; Stuhl, L.; Takeuchi, S.; Tanaka, M.; Thoennessen, M.; Törnqvist, H.; Togano, Y.; Tomai, T.; Tscheuschner, J.; Tsubota, J.; Uesaka, T.; Yang, Z.; Yoneda, K.

doi:10.1016/j.physletb.2023.138038

Title: Intruder configurations in ²⁹Ne at the transition into the island of inversion: Detailed structure study of ²⁸Ne

Abstract

Detailed γ-ray spectroscopy of the exotic neon isotope ²⁸Ne has been performed for the first time using the one-neutron removal reaction from ²⁹Ne on a liquid hydrogen target at 240 MeV/nucleon. Based on an analysis of parallel momentum distributions, a level scheme with spin-parity assignments has been constructed for ²⁸Ne and the negative-parity states are identified for the first time. The measured partial cross sections and momentum distributions reveal a significant intruder p-wave strength providing evidence of the breakdown of the N=20 and N=28 shell gaps. Only a weak, possible f-wave strength was observed to bound final states. Large-scale shell-model calculations with different effective interactions do not reproduce the large p-wave and small f-wave strength observed experimentally, indicating an ongoing challenge for a complete theoretical description of the transition into the island of inversion along the Ne isotopic chain.

Authors:

^[1]; Yasuda, M. ^[2]; Kondo, Y. ^[2]; Nakamura, T. ^[2]; Tostevin, J. A. ^[3]; Ogata, K. ^[4]; Otsuka, T. ^[5]; Poves, A. ^[6]; Shimizu, N. ^[7]; Yoshida, K. ^[8]; Achouri, N. L. ^[9]; Al Falou, H. ^[10]; Atar, L. ^[11]; Aumann, T. ^[12]; Baba, H. ^[13]; Boretzky, K. ^[14]; Caesar, C. ^[14]; Calvet, D. ^[15]; Chae, H. ^[16]; Chiga, N. ^[13] more »

Inst. of Physical and Chemical Research (RIKEN), Wako (Japan)
Tokyo Institute of Technology (Japan)
Tokyo Institute of Technology (Japan); Univ. of Surrey, Guildford (United Kingdom)
Kyushu Univ., Fukuoka (Japan); Osaka Univ. (Japan)
Univ. of Tokyo (Japan); RIKEN, Saitama (Japan)
Univ. Autonoma de Madrid (Spain)
Univ. of Tsukuba (Japan)
Japan Atomic Energy Agency (JAEA), Tokai (Japan)
Normandie Université (France); Centre National de la Recherche Scientifique (CNRS) (France)
Lebanese University, Beirut (Lebanon)
Technische Univ. Darmstadt (Germany)
Technische Univ. Darmstadt (Germany); GSI-Helmholtzzentrum fur Schwerionenforschung, Darmstadt (Germany)
RIKEN, Saitama (Japan)
GSI-Helmholtzzentrum fur Schwerionenforschung, Darmstadt (Germany)
Univ. Paris-Saclay, Gif-sur-Yvette (France); Alternative Energies and Atomic Energy Commission (CEA) (France)
Institute of Basic Science (IBS), Daejeon (Korea, Republic of)
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
MTA Atomki, Debrecen (Hungary)
Univ. of Groningen (Netherlands)
Ruđer Bošković Institute (Croatia); GSI-Helmholtzzentrum fur Schwerionenforschung, Darmstadt (Germany)
Argonne National Laboratory (ANL), Argonne, IL (United States)
Eötvös Loránd University (Hungary)
Kyushu Univ., Fukuoka (Japan)
Tohoku Univ. (Japan)
Univ. of Tokyo (Japan)
Chalmers University of Technology, Gothenburg (Sweden)
Univ. zu Koln (Germany)
Michigan State Univ., East Lansing, MI (United States)
Kyoto Univ. (Japan)
Normandie Université (France); Centre National de la Recherche Scientifique (CNRS) (France); Grand Accelerateur National d'Ions Lourds (GANIL); Alternative Energies and Atomic Energy Commission (CEA) (France); Univ. Paris-Saclay, Gif-sur-Yvette (France)
Seoul National Univ. (Korea, Republic of)
Centre National de la Recherche Scientifique (CNRS) (France); Grand Accelerateur National d'Ions Lourds (GANIL); Alternative Energies and Atomic Energy Commission (CEA) (France)
Institute of Basic Science (IBS), Daejeon (Korea, Republic of); RIKEN, Saitama (Japan)
Osaka Univ. (Japan)

Publication Date:: Tue Jun 20 00:00:00 EDT 2023

Research Org.:: Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Nuclear Physics (NP)

OSTI Identifier:: 2282059

Grant/Contract Number:: AC02-05CH11231; AC02-06CH11357

Resource Type:: Accepted Manuscript

Journal Name:: Physics Letters. B

Additional Journal Information:: Journal Volume: 843; Journal ID: ISSN 0370-2693

Publisher:: Elsevier

Country of Publication:: United States

Language:: English

Subject:: 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; in-beam γ-ray spectroscopy; island of inversion; shell evolution

Citation Formats


                    Wang, H., Yasuda, M., Kondo, Y., Nakamura, T., Tostevin, J. A., Ogata, K., Otsuka, T., Poves, A., Shimizu, N., Yoshida, K., Achouri, N. L., Al Falou, H., Atar, L., Aumann, T., Baba, H., Boretzky, K., Caesar, C., Calvet, D., Chae, H., Chiga, N., Corsi, A., Crawford, H. L., Delaunay, F., Delbart, A., Deshayes, Q., Dombrádi, Zs, Douma, C., Elekes, Z., Fallon, P., Gašparić, I., Gheller, J. -M., Gibelin, J., Gillibert, A., Harakeh, M. N., Hirayama, A., Hoffman, C. R., Holl, M., Horvat, A., Horváth, Á., Hwang, J. W., Isobe, T., Kahlbow, J., Kalantar-Nayestanaki, N., Kawase, S., Kim, S., Kisamori, K., Kobayashi, T., Körper, D., Koyama, S., Kuti, I., Lapoux, V., Lindberg, S., Marqués, F. M., Masuoka, S., Mayer, J., Miki, K., Murakami, T., Najafi, M. A., Nakano, K., Nakatsuka, N., Nilsson, T., Obertelli, A., Orr, N. A., Otsu, H., Ozaki, T., Panin, V., Paschalis, S., Revel, A., Rossi, D., Saito, A. T., Saito, T., Sasano, M., Sato, H., Satou, Y., Scheit, H., Schindler, F., Schrock, P., Shikata, M., Shimizu, Y., Simon, H., Sohler, D., Sorlin, O., Stuhl, L., Takeuchi, S., Tanaka, M., Thoennessen, M., Törnqvist, H., Togano, Y., Tomai, T., Tscheuschner, J., Tsubota, J., Uesaka, T., Yang, Z., and Yoneda, K. Intruder configurations in 29Ne at the transition into the island of inversion: Detailed structure study of 28Ne.  United States: N. p., 2023. 
Web.  doi:10.1016/j.physletb.2023.138038.

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                    Wang, H., Yasuda, M., Kondo, Y., Nakamura, T., Tostevin, J. A., Ogata, K., Otsuka, T., Poves, A., Shimizu, N., Yoshida, K., Achouri, N. L., Al Falou, H., Atar, L., Aumann, T., Baba, H., Boretzky, K., Caesar, C., Calvet, D., Chae, H., Chiga, N., Corsi, A., Crawford, H. L., Delaunay, F., Delbart, A., Deshayes, Q., Dombrádi, Zs, Douma, C., Elekes, Z., Fallon, P., Gašparić, I., Gheller, J. -M., Gibelin, J., Gillibert, A., Harakeh, M. N., Hirayama, A., Hoffman, C. R., Holl, M., Horvat, A., Horváth, Á., Hwang, J. W., Isobe, T., Kahlbow, J., Kalantar-Nayestanaki, N., Kawase, S., Kim, S., Kisamori, K., Kobayashi, T., Körper, D., Koyama, S., Kuti, I., Lapoux, V., Lindberg, S., Marqués, F. M., Masuoka, S., Mayer, J., Miki, K., Murakami, T., Najafi, M. A., Nakano, K., Nakatsuka, N., Nilsson, T., Obertelli, A., Orr, N. A., Otsu, H., Ozaki, T., Panin, V., Paschalis, S., Revel, A., Rossi, D., Saito, A. T., Saito, T., Sasano, M., Sato, H., Satou, Y., Scheit, H., Schindler, F., Schrock, P., Shikata, M., Shimizu, Y., Simon, H., Sohler, D., Sorlin, O., Stuhl, L., Takeuchi, S., Tanaka, M., Thoennessen, M., Törnqvist, H., Togano, Y., Tomai, T., Tscheuschner, J., Tsubota, J., Uesaka, T., Yang, Z., & Yoneda, K. Intruder configurations in 29Ne at the transition into the island of inversion: Detailed structure study of 28Ne.  United States.  https://doi.org/10.1016/j.physletb.2023.138038

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                    Wang, H., Yasuda, M., Kondo, Y., Nakamura, T., Tostevin, J. A., Ogata, K., Otsuka, T., Poves, A., Shimizu, N., Yoshida, K., Achouri, N. L., Al Falou, H., Atar, L., Aumann, T., Baba, H., Boretzky, K., Caesar, C., Calvet, D., Chae, H., Chiga, N., Corsi, A., Crawford, H. L., Delaunay, F., Delbart, A., Deshayes, Q., Dombrádi, Zs, Douma, C., Elekes, Z., Fallon, P., Gašparić, I., Gheller, J. -M., Gibelin, J., Gillibert, A., Harakeh, M. N., Hirayama, A., Hoffman, C. R., Holl, M., Horvat, A., Horváth, Á., Hwang, J. W., Isobe, T., Kahlbow, J., Kalantar-Nayestanaki, N., Kawase, S., Kim, S., Kisamori, K., Kobayashi, T., Körper, D., Koyama, S., Kuti, I., Lapoux, V., Lindberg, S., Marqués, F. M., Masuoka, S., Mayer, J., Miki, K., Murakami, T., Najafi, M. A., Nakano, K., Nakatsuka, N., Nilsson, T., Obertelli, A., Orr, N. A., Otsu, H., Ozaki, T., Panin, V., Paschalis, S., Revel, A., Rossi, D., Saito, A. T., Saito, T., Sasano, M., Sato, H., Satou, Y., Scheit, H., Schindler, F., Schrock, P., Shikata, M., Shimizu, Y., Simon, H., Sohler, D., Sorlin, O., Stuhl, L., Takeuchi, S., Tanaka, M., Thoennessen, M., Törnqvist, H., Togano, Y., Tomai, T., Tscheuschner, J., Tsubota, J., Uesaka, T., Yang, Z., and Yoneda, K. Tue .  
"Intruder configurations in 29Ne at the transition into the island of inversion: Detailed structure study of 28Ne".  United States.  https://doi.org/10.1016/j.physletb.2023.138038.  https://www.osti.gov/servlets/purl/2282059.

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@article{osti_2282059,

  title        = {Intruder configurations in 29Ne at the transition into the island of inversion: Detailed structure study of 28Ne},

  author       = {Wang, H. and Yasuda, M. and Kondo, Y. and Nakamura, T. and Tostevin, J. A. and Ogata, K. and Otsuka, T. and Poves, A. and Shimizu, N. and Yoshida, K. and Achouri, N. L. and Al Falou, H. and Atar, L. and Aumann, T. and Baba, H. and Boretzky, K. and Caesar, C. and Calvet, D. and Chae, H. and Chiga, N. and Corsi, A. and Crawford, H. L. and Delaunay, F. and Delbart, A. and Deshayes, Q. and Dombrádi, Zs and Douma, C. and Elekes, Z. and Fallon, P. and Gašparić, I. and Gheller, J. -M. and Gibelin, J. and Gillibert, A. and Harakeh, M. N. and Hirayama, A. and Hoffman, C. R. and Holl, M. and Horvat, A. and Horváth, Á. and Hwang, J. W. and Isobe, T. and Kahlbow, J. and Kalantar-Nayestanaki, N. and Kawase, S. and Kim, S. and Kisamori, K. and Kobayashi, T. and Körper, D. and Koyama, S. and Kuti, I. and Lapoux, V. and Lindberg, S. and Marqués, F. M. and Masuoka, S. and Mayer, J. and Miki, K. and Murakami, T. and Najafi, M. A. and Nakano, K. and Nakatsuka, N. and Nilsson, T. and Obertelli, A. and Orr, N. A. and Otsu, H. and Ozaki, T. and Panin, V. and Paschalis, S. and Revel, A. and Rossi, D. and Saito, A. T. and Saito, T. and Sasano, M. and Sato, H. and Satou, Y. and Scheit, H. and Schindler, F. and Schrock, P. and Shikata, M. and Shimizu, Y. and Simon, H. and Sohler, D. and Sorlin, O. and Stuhl, L. and Takeuchi, S. and Tanaka, M. and Thoennessen, M. and Törnqvist, H. and Togano, Y. and Tomai, T. and Tscheuschner, J. and Tsubota, J. and Uesaka, T. and Yang, Z. and Yoneda, K.},

  abstractNote = {Detailed γ-ray spectroscopy of the exotic neon isotope 28Ne has been performed for the first time using the one-neutron removal reaction from 29Ne on a liquid hydrogen target at 240 MeV/nucleon. Based on an analysis of parallel momentum distributions, a level scheme with spin-parity assignments has been constructed for 28Ne and the negative-parity states are identified for the first time. The measured partial cross sections and momentum distributions reveal a significant intruder p-wave strength providing evidence of the breakdown of the N=20 and N=28 shell gaps. Only a weak, possible f-wave strength was observed to bound final states. Large-scale shell-model calculations with different effective interactions do not reproduce the large p-wave and small f-wave strength observed experimentally, indicating an ongoing challenge for a complete theoretical description of the transition into the island of inversion along the Ne isotopic chain.},

  doi          = {10.1016/j.physletb.2023.138038},

  journal      = {Physics Letters. B},

  number       = ,

  volume       = 843,

  place        = {United States},

  year         = {Tue Jun 20 00:00:00 EDT 2023},

  month        = {Tue Jun 20 00:00:00 EDT 2023}

}

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Physical Review Letters, Vol. 105, Issue 25
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Physical Review Letters, Vol. 94, Issue 16
DOI: 10.1103/PhysRevLett.94.162501

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Title: Intruder configurations in 29Ne at the transition into the island of inversion: Detailed structure study of 28Ne

Abstract

Citation Formats

Quadrupole collectivity of 28Ne and the boundary of the island of inversion journal, August 2005

Single-neutron knockout from intermediate energy beams of Mg 30 , 32 : Mapping the transition into the “island of inversion” journal, January 2008

Role of intruder configurations in Ne and Mg journal, September 1999

Low-lying intruder 1− state in 12Be and the melting of the N=8 shell closure journal, October 2000

Large deformation of the very neutron-rich nucleus 32Mg from intermediate-energy Coulomb excitation journal, March 1995

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Re-examining the transition into the N = 20 island of inversion: Structure of 30 Mg journal, April 2018

Persistence of the Z = 28 Shell Gap Around Ni 78 : First Spectroscopy of Cu 79 journal, November 2017

Border of the island of inversion: Unbound states in Ne29 journal, March 2022

Low-lying neutron f p -shell intruder states in 27 Ne journal, January 2012

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Structure of Mg 30 explored via in-beam γ -ray spectroscopy journal, November 2020

Bound State Properties Studied by the Knockout Reaction journal, June 2021

Coexisting normal and intruder configurations in 32Mg journal, November 2021

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Mapping the deformation in the “island of inversion”: Inelastic scattering of Ne 30 and Mg 36 at intermediate energies journal, April 2016

Evolution of shell structure in exotic nuclei journal, March 2020

Proton-induced knockout reactions with polarized and unpolarized beams journal, September 2017

One-neutron removal from Ne 29 : Defining the lower limits of the island of inversion journal, January 2016

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Transition to the Island of Inversion: Study of Excited States in28-30Ne journal, October 2006

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Intruder configurations in the ground state of 30 Ne journal, April 2017

Deformation-Driven p -Wave Halos at the Drip Line: Ne 31 journal, April 2014

VanishingN=20Shell Gap: Study of Excited States inNe27,28 journal, May 2006

In-Beam γ -Ray Spectroscopy of Mg 34 , 36 , 38 : Merging the N = 20 and N = 28 Shell Quenching journal, November 2013

Search for neutron excitations across the N = 20 shell gap in Ne 25 − 29 journal, November 2005

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Title: Intruder configurations in ²⁹Ne at the transition into the island of inversion: Detailed structure study of ²⁸Ne

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journal, August 2005

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journal, January 2008

Role of intruder configurations in Ne and Mg
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Low-lying intruder 1− state in 12Be and the melting of the N=8 shell closure
journal, October 2000

Large deformation of the very neutron-rich nucleus 32Mg from intermediate-energy Coulomb excitation
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Extending the Southern Shore of the Island of Inversion to ${}^{28}F$
journal, April 2020

New Skyrme interaction for normal and exotic nuclei
journal, July 1998

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journal, April 2018

Persistence of the $Z = 28$ Shell Gap Around ${}^{78}{Ni}$ : First Spectroscopy of ${}^{79}{Cu}$
journal, November 2017

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journal, March 2022

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journal, January 2012

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journal, November 2016

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

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journal, June 2021

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journal, February 2022

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journal, September 2019

First Spectroscopy of the Near Drip-line Nucleus ${}^{40}{Mg}$
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journal, September 2011

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

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journal, November 2020

Bound State Properties Studied by the Knockout Reaction
journal, June 2021

Coexisting normal and intruder configurations in 32Mg
journal, November 2021

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journal, July 2014

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journal, August 1975

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

Spectroscopy of ${}^{32}{Ne}$ and the “Island of Inversion”
journal, July 2009

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Two-proton knockout from ${}^{32}{Mg}$ : Intruder amplitudes in ${}^{30}{Ne}$ and implications for the binding of ${}^{29, 31}F$
journal, April 2010

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journal, July 2003

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journal, April 2016

Evolution of shell structure in exotic nuclei
journal, March 2020

Proton-induced knockout reactions with polarized and unpolarized beams
journal, September 2017

One-neutron removal from ${}^{29}{Ne}$ : Defining the lower limits of the island of inversion
journal, January 2016

Spectroscopy of strongly deformed ${}^{32}{Ne}$ by proton knockout reactions
journal, January 2019

Transition to the Island of Inversion: Study of Excited States in^28-30Ne
journal, October 2006

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

Nucleon-nucleon t -matrix interaction for scattering at intermediate energies
journal, February 1985

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journal, June 2009

Large collectivity in 29Ne at the boundary of the island of inversion
journal, March 2023

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journal, December 2022

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journal, February 2017

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journal, April 2017

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journal, April 2014

VanishingN=20Shell Gap: Study of Excited States inNe27,28
journal, May 2006

In-Beam $γ$ -Ray Spectroscopy of ${}^{34, 36, 38}{Mg}$ : Merging the $N = 20$ and $N = 28$ Shell Quenching
journal, November 2013

Search for neutron excitations across the $N = 20$ shell gap in ${}^{25 - 29}{Ne}$
journal, November 2005

Quadrupole collectivity in island-of-inversion nuclei $^{28, 30} Ne$ and $^{34, 36} Mg$
journal, May 2014

Unveiling the Intruder Deformed $0_{2}^{+}$ State in ${}^{34}{Si}$
journal, August 2012

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journal, November 2013

In-beam γ -ray spectroscopy of Mg32 via direct reactions
journal, March 2022

Geant4—a simulation toolkit
journal, July 2003

SAMURAI spectrometer for RI beam experiments
journal, December 2013

78Ni revealed as a doubly magic stronghold against nuclear deformation
journal, May 2019

Discovery of the Shape Coexisting $0^{+}$ State in ${}^{32}{Mg}$ by a Two Neutron Transfer Reaction
journal, December 2010

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journal, September 2006

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journal, October 2019

BigRIPS separator and ZeroDegree spectrometer at RIKEN RI Beam Factory
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journal, April 2005