Consistent analysis of one-nucleon spectroscopic factors involving weakly- and strongly-bound nucleons

Journal Article · 06 April 2016 · Physics Letters. B

DOI: https://doi.org/10.1016/j.physletb.2016.03.086 · OSTI ID:1246192

Okolowicz, J. ^[1]; Lam, Y. H. ^[2]; Ploszajczak, M. ^[3]; Macchiavelli, A. O. ^[4]; Smirnova, N. A. ^[5]

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1. Polish Academy of Sciences, Krakow (Poland)
2. Chinese Academy of Sciences, Lanzhou (China)
3. CEA/DSM - CNRS/IN2P3, Caen Cedex (France)
4. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
5. CENBG (UMR 5797 - Univ. Bordeaux 1 - CNRS/IN2P3), Gradignan Cedex (France)

There is a considerable interest in understanding the dependence of one-nucleon removal cross sections on the asymmetry of the neutron S_n and proton S_p separation energies, following a large amount of experimental data and theoretical analyses in a framework of sudden and eikonal approximations of the reaction dynamics. These theoretical calculations involve both the single-particle cross section and the shell-model description of the projectile initial state and final states of the reaction residues. The configuration mixing in shell-model description of nuclear states depends on the proximity of one-nucleon decay threshold but does it depend sensitively on S_n -S_p ? To answer this question, we use the shell model embedded in the continuum to investigate the dependence of one-nucleon spectroscopic factors on the asymmetry of S_n and S_p for mirror nuclei ²⁴Si, ²⁴Ne and ²⁸S, ²⁸Mg and for a series of neon isotopes (20 ≤ A ≤ 28).

• Research Organization: Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
• Sponsoring Organization: USDOE Office of Science (SC); USDOE
• Grant/Contract Number: AC02-05CH11231; FG02-10ER41700; 34457VA
• OSTI ID: 1246192
• Alternate ID(s): OSTI ID: 1379393
• Journal Information: Physics Letters. B, Vol. 757, Issue C; ISSN 0370-2693
• Publisher: ElsevierCopyright Statement
• Country of Publication: United States
• Language: English