Neutron-unbound excited states of N23

Jones, M. D.; Baumann, T.; Brett, J.; Bullaro, J.; DeYoung, P. A.; Finck, J. E.; Frank, N.; Hammerton, K.; Hinnefeld, J.; Kohley, Z.; Kuchera, A. N.; Pereira, J.; Rabeh, A.; Smith, J. K.; Spyrou, A.; Stephenson, S. L.; Stiefel, K.; Tuttle-Timm, M.; Zegers, R. G.  T.; Thoennessen, M.

doi:10.1103/PhysRevC.95.044323

Title: Neutron-unbound excited states of ${}^{23}N$

Journal Article · 25 April 2017 · Physical Review C

DOI: https://doi.org/10.1103/PhysRevC.95.044323 · OSTI ID:1407961

Jones, M. D. ^[1]; Baumann, T. ^[2]; Brett, J. ^[3]; Bullaro, J. ^[4]; DeYoung, P. A. ^[3]; Finck, J. E. ^[5]; Frank, N. ^[4]; Hammerton, K. ^[6]; Hinnefeld, J. ^[7]; Kohley, Z. ^[6]; Kuchera, A. N. ^[2]; Pereira, J. ^[2]; Rabeh, A. ^[4]; Smith, J. K. ^[8]; Spyrou, A. ^[8]; Stephenson, S. L. ^[9]; Stiefel, K. ^[6]; Tuttle-Timm, M. ^[4]; Zegers, R. G. T. ^[10]; Thoennessen, M. ^[8]

Michigan State Univ., East Lansing, MI (United States). National Superconducting Cyclotron Lab., Dept. of Physics and Astronomy; Nuclear Science and Security Consortium
Michigan State Univ., East Lansing, MI (United States). National Superconducting Cyclotron Lab.
Hope College, Holland, MI (United States). Dept. of Physics
Augustana College, Sioux Falls, SD (United States). Dept. of Physics and Astronomy
Central Michigan Univ., Mount Pleasant, MI (United States). Dept. of Physics
Michigan State Univ., East Lansing, MI (United States). National Superconducting Cyclotron Lab., Dept. of Chemistry
Indiana Univ., SouthBend, IN (United States). Dept. of Physics and Astronomy
Michigan State Univ., East Lansing, MI (United States). National Superconducting Cyclotron Lab., Dept. of Physics and Astronomy
Gettysburg College, PA (United States). Dept. of Physics
Michigan State Univ., East Lansing, MI (United States). National Superconducting Cyclotron Lab., Dept. of Physics and Astronomy, Joint Inst. for Nuclear Astrophysics

Neutron unbound states in ²³N were populated via proton knockout from an 83.4 MeV/nucleon ²⁴O beam on a liquid deuterium target. The two-body decay energy displays two peaks at E₁ ~ 100 keV and E₂~ 1MeV with respect to the neutron separation energy. The data are consistent with shell model calculations predicting resonances at excitation energies of ~3.6MeV and ~4.5MeV. The selectivity of the reaction implies that these states correspond to the first and second 3/2^- states. Furthermore, the energy of the first state is about 1.3 MeV lower than the first excited 2⁺ in ²⁴O. This decrease is largely due to coupling with the πp $$-1\atop{3/2}$$ hole along with a small reduction of the N = 16 shell gap in ²3N.

View Accepted Manuscript (DOE)

Cite

Export

Save

Research Organization:: Univ. of California, Berkeley, CA (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA); National Science Foundation (NSF)

Grant/Contract Number:: NA0003180; NA0000979

OSTI ID:: 1407961

Journal Information:: Physical Review C, Journal Name: Physical Review C Journal Issue: 4 Vol. 95; ISSN PRVCAN; ISSN 2469-9985

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

References (27)

MoNA—The Modular Neutron Array Luther, B.; Baumann, T.; Thoennessen, M. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 505, Issue 1-2 https://doi.org/10.1016/S0168-9002(03)01014-3	journal	June 2003
Geant4—a simulation toolkit 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 https://doi.org/10.1016/S0168-9002(03)01368-8	journal	July 2003
The Shell-Model Code NuShellX@MSU Brown, B. A.; Rae, W. D. M. Nuclear Data Sheets, Vol. 120 https://doi.org/10.1016/j.nds.2014.07.022	journal	June 2014
Liquid hydrogen and helium targets for radioisotope beams at RIKEN Ryuto, H.; Kunibu, M.; Minemura, T. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 555, Issue 1-2 https://doi.org/10.1016/j.nima.2005.08.102	journal	December 2005
COSY INFINITY Version 9 Makino, Kyoko; Berz, Martin Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 558, Issue 1 https://doi.org/10.1016/j.nima.2005.11.109	journal	March 2006
Reconstruction of nuclear charged fragment trajectories from a large-gap sweeper magnet Frank, N.; Schiller, A.; Bazin, D. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 580, Issue 3 https://doi.org/10.1016/j.nima.2007.07.008	journal	October 2007
Evidence for a doubly magic 24O Hoffman, C. R.; Baumann, T.; Bazin, D. Physics Letters B, Vol. 672, Issue 1 https://doi.org/10.1016/j.physletb.2008.12.066	journal	February 2009
A new view of nuclear shells Kanungo, Rituparna Physica Scripta, Vol. T152 https://doi.org/10.1088/0031-8949/2013/T152/014002	journal	January 2013
Exotic nuclei and nuclear forces Otsuka, Takaharu Physica Scripta, Vol. T152 https://doi.org/10.1088/0031-8949/2013/T152/014007	journal	January 2013
Nuclear structure experiments along the neutron drip line Baumann, T.; Spyrou, A.; Thoennessen, M. Reports on Progress in Physics, Vol. 75, Issue 3 https://doi.org/10.1088/0034-4885/75/3/036301	journal	February 2012
The Ame2012 atomic mass evaluation Wang, M.; Audi, G.; Wapstra, A. H. Chinese Physics C, Vol. 36, Issue 12 https://doi.org/10.1088/1674-1137/36/12/003	journal	December 2012
Cross Sections for Products of 90-Mev Neutrons on Carbon Kellogg, D. A. Physical Review, Vol. 90, Issue 2 https://doi.org/10.1103/PhysRev.90.224	journal	April 1953
Mass systematics for A =29–44 nuclei: The deformed A ∼32 region Warburton, E. K.; Becker, J. A.; Brown, B. A. Physical Review C, Vol. 41, Issue 3 https://doi.org/10.1103/PhysRevC.41.1147	journal	March 1990
Effective interactions for the 0 p 1 s 0 d nuclear shell-model space Warburton, E. K.; Brown, B. A. Physical Review C, Vol. 46, Issue 3 https://doi.org/10.1103/PhysRevC.46.923	journal	September 1992
Continuum shell model Volya, Alexander; Zelevinsky, Vladimir Physical Review C, Vol. 74, Issue 6 https://doi.org/10.1103/PhysRevC.74.064314	journal	December 2006
In-beam γ-ray spectroscopy of the neutron-rich nitrogen isotopes N 19 − 22 Sohler, D.; Stanoiu, M.; Dombrádi, Zs. Physical Review C, Vol. 77, Issue 4 https://doi.org/10.1103/PhysRevC.77.044303	journal	April 2008
Disappearance of the N = 14 shell Strongman, M. J.; Spyrou, A.; Hoffman, C. R. Physical Review C, Vol. 80, Issue 2 https://doi.org/10.1103/PhysRevC.80.021302	journal	August 2009
Spectroscopy of neutron-unbound 27 , 28 F Christian, G.; Frank, N.; Ash, S. Physical Review C, Vol. 85, Issue 3 https://doi.org/10.1103/PhysRevC.85.034327	journal	March 2012
Unbound excited states of the N = 16 closed shell nucleus O 24 Rogers, W. F.; Garrett, S.; Grovom, A. Physical Review C, Vol. 92, Issue 3 https://doi.org/10.1103/PhysRevC.92.034316	journal	September 2015
Two-neutron sequential decay of O 24 Jones, M. D.; Frank, N.; Baumann, T. Physical Review C, Vol. 92, Issue 5 https://doi.org/10.1103/PhysRevC.92.051306	journal	November 2015
One-Neutron Removal Measurement Reveals O 24 as a New Doubly Magic Nucleus Kanungo, R.; Nociforo, C.; Prochazka, A. Physical Review Letters, Vol. 102, Issue 15 https://doi.org/10.1103/PhysRevLett.102.152501	journal	April 2009
Novel Features of Nuclear Forces and Shell Evolution in Exotic Nuclei Otsuka, Takaharu; Suzuki, Toshio; Honma, Michio Physical Review Letters, Vol. 104, Issue 1 https://doi.org/10.1103/PhysRevLett.104.012501	journal	January 2010
Three-Body Forces and the Limit of Oxygen Isotopes Otsuka, Takaharu; Suzuki, Toshio; Holt, Jason D. Physical Review Letters, Vol. 105, Issue 3 https://doi.org/10.1103/PhysRevLett.105.032501	journal	July 2010
N = 16 Spherical Shell Closure in O 24 Tshoo, K.; Satou, Y.; Bhang, H. Physical Review Letters, Vol. 109, Issue 2 https://doi.org/10.1103/PhysRevLett.109.022501	journal	July 2012
Direct Mass Measurements of B 19 , C 22 , F 29 , Ne 31 , Na 34 and Other Light Exotic Nuclei Gaudefroy, L.; Mittig, W.; Orr, N. A. Physical Review Letters, Vol. 109, Issue 20 https://doi.org/10.1103/PhysRevLett.109.202503	journal	November 2012
Evolution of Nuclear Shells due to the Tensor Force Otsuka, Takaharu; Suzuki, Toshio; Fujimoto, Rintaro Physical Review Letters, Vol. 95, Issue 23 https://doi.org/10.1103/PhysRevLett.95.232502	journal	November 2005
System Testing and Installation of the NHMFL/NSCL Sweeper Magnet Bird, M. D.; Kenney, S. J.; Toth, J. IEEE Transactions on Appiled Superconductivity, Vol. 15, Issue 2 https://doi.org/10.1109/TASC.2005.849553	journal	June 2005

Cited By (1)

First Observation of B 20 and B 21 Leblond, S.; Marqués, F. M.; Gibelin, J. Physical Review Letters, Vol. 121, Issue 26 https://doi.org/10.1103/physrevlett.121.262502	journal	December 2018

Similar Records

Two-neutron sequential decay of

{}^{24}O

Journal Article · 2015 · Physical Review C, Nuclear Physics · OSTI ID:1454772

Jones, M. D.; Frank, N.; Baumann, T.; +18 more

Structure of

{}^{107}{Sn}

studied through single-neutron knockout reactions

Journal Article · 2016 · Physical Review C · OSTI ID:1343512

Cerizza, G.; Ayres, A.; Jones, K. L.; +22 more

Neutron-unbound states in ³¹Ne

Journal Article · 2021 · Physical Review C · OSTI ID:1827200

Chrisman, D.; Kuchera, A. N.; Baumann, T.; +21 more

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS

Title: Neutron-unbound excited states of N 23

Citation Formats

References (27)

Cited By (1)

Similar Records

Related Subjects

Title: Neutron-unbound excited states of ${}^{23}N$