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 · Tue Apr 25 00:00:00 EDT 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. ^[1]; Spyrou, A. ^[1]; Stephenson, S. L. ^[8]; Stiefel, K. ^[6]; Tuttle-Timm, M. ^[4]; Zegers, R. G. T. ^[9]; Thoennessen, M. ^[1]

Michigan State Univ., East Lansing, MI (United States). National Superconducting Cyclotron Lab., Dept. of Physics and Astronomy
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
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 E1~100keV 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. The energy of the first state is about 1.3 MeV lower than the first excited 2+ in O24. This decrease is largely due to coupling with the πp3/2-1 hole along with a small reduction of the N=16 shell gap in N23.

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Research Organization:: Univ. of California, Berkeley, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)

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

Grant/Contract Number:: NA0003180; NA0000979; PHY14-04236; PHY12-05537; PHY11-02511; PHY11- 01745; PHY14-30152; PHY09-69058; PHY12-05357; AC02-05CH11231

OSTI ID:: 1407961

Alternate ID(s):: OSTI ID: 1353135; OSTI ID: 1423618

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

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 4 works

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