skip to main content

DOE PAGESDOE PAGES

Title: Neutron–proton effective mass splitting in neutron-rich matter at normal density from analyzing nucleon–nucleus scattering data within an isospin dependent optical model

The neutron–proton effective mass splitting in asymmetric nucleonic matter of isospin asymmetry δ and normal density is found to be m*n-p≡(m*n – m*p)/m = (0.41 ± 0.15)δ from analyzing globally 1088 sets of reaction and angular differential cross sections of proton elastic scattering on 130 targets with beam energies from 0.783 MeV to 200 MeV, and 1161 sets of data of neutron elastic scattering on 104 targets with beam energies from 0.05 MeV to 200 MeV within an isospin dependent non-relativistic optical potential model. It sets a useful reference for testing model predictions on the momentum dependence of the nucleon isovector potential necessary for understanding novel structures and reactions of rare isotopes.
Authors:
 [1] ;  [2] ;  [3] ;  [4] ;  [1] ;  [1]
  1. Texas A&M University-Commerce, Commerce, TX (United States)
  2. Texas A&M University-Commerce, Commerce, TX (United States); Univ. of Shanghai for Science and Technology, Shanghai (China)
  3. Texas A&M University-Commerce, Commerce, TX (United States); Xi'an Jiaotong Univ., Xian (China)
  4. Shanghai Jiao Tong Univ., Shanghai (China)
Publication Date:
Grant/Contract Number:
PHY-1068022; NNX11AC41G; FG02-13ER42025; 11047157; 11205083; 11275125; 11135011; 11320101004; 2015CB856904; 2013CB834405; 11QH1401100; 11DZ2260700
Type:
Published Article
Journal Name:
Physics Letters. Section B
Additional Journal Information:
Journal Volume: 743; Journal Issue: C; Journal ID: ISSN 0370-2693
Publisher:
Elsevier
Research Org:
Texas A & M Univ., Commerce, TX (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
OSTI Identifier:
1198541
Alternate Identifier(s):
OSTI ID: 1188774