Evidence for the pair-breaking process inSn<mml:mprescripts/><mml:none/>116,117

2008/10/31 by U. Agvaanluvsan, A. C. Larsen, M. Guttormsen +5 · 1 citation
Physics and Astronomy · #Astronomical and nuclear sciences #Nuclear Physics and Applications #Nuclear physics #Nuclear physics research studies #Physics #nucl-ex

paper · pdf · doi:10.1103/physrevc.79.014320

published as Phys.Rev.C79:014320,2009 · 7 pages, 5 figures, accepted for publication in Phys. Rev. C, 22 December 2008

arxiv created 2009/01/06 · openalex publication_date 2009/01/30 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

The nuclear level densities of ^116,117Sn below the neutron separation energy have been determined experimentally from the (³He,\ensuremathα\ensuremathγ) and (³He,³He^'\ensuremathγ) reactions, respectively. The level densities show a characteristic exponential increase and a difference in magnitude due to the odd-even effect of the nuclear systems. In addition, the level densities display pronounced step-like structures that are interpreted as signatures of subsequent breaking of nucleon pairs.

Citations

• A COMPOSITE NUCLEAR-LEVEL DENSITY FORMULA WITH SHELL CORRECTIONS
• Odd-even staggering of binding energies as a consequence of pairing and mean-field effects
• Free energy and criticality in the nucleon pair breaking process
• Evolution of level density step structures from Fe-56, Fe-57 to Mo-96, Mo-97

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