2021年2月
Proton density polarization of the doubly magic Ca-40 core in Ca-48 and EoS parameters
PROGRESS OF THEORETICAL AND EXPERIMENTAL PHYSICS
- ,
- ,
- ,
- 巻
- 2021
- 号
- 2
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1093/ptep/ptab001
- 出版者・発行元
- OXFORD UNIV PRESS INC
The proton density polarization in Ca-48 by the eight neutrons added on the Ca-40 core is discussed. We adopt the proton density distributions determined by electron scattering and the neutron density distributions determined by proton elastic scattering in Ca-40 and Ca-48. As a measure of the proton density polarization effect due to the neutrons, a ratio R of the peak values of the neutron density difference Delta(rho n,peak) between Ca-48 and Ca-40 to the proton one Delta(rho p,peak) is introduced and compared with the Hartree-Fock and Hartree calculations by non-relativistic and relativistic energy density functionals (EDFs), respectively. The value R shows clear correlations with the symmetry energy parameters J and L, but not with the isoscalar incompressibility K-infinity. The experimental value R can be reproduced by theoretical calculations using the EDFs with L = 25-50 MeV.
- リンク情報
- ID情報
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- DOI : 10.1093/ptep/ptab001
- ISSN : 2050-3911
- Web of Science ID : WOS:000646907500011