DENSITY-DEPENDENCE OF THE SIGMA-NUCLEUS OPTICAL-POTENTIAL DERIVED FROM SIGMA-ATOM DATA

被引：91

作者：

BATTY, CJ ^{[1
]}

FRIEDMAN, E ^{[1
]}

GAL, A ^{[1
]}

机构：

[1] HEBREW UNIV JERUSALEM,RACAH INST PHYS,IL-91904 JERUSALEM,ISRAEL

来源：

PHYSICS LETTERS B | 1994年 / 335卷 / 3-4期

基金：

以色列科学基金会;

关键词：

D O I：

10.1016/0370-2693(94)90349-2

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study phenomenologically the density dependence of the SIGMA nucleus optical potential V(opt)(r) at zero kinetic energy by fitting it to a comprehensive set of atomic data across the periodic table. The best fit solutions for V(opt) depart considerably from a standard t(eff)rho(r) form in that Re V(opt) tends to flip sign from attraction outside the nucleus to repulsion in the surface region. However, the quality of the atomic data is too poor to determine unambiguously V(opt) inside the nucleus. For such density dependent potentials, well defined single-particle hypernuclear states are unlikely to exist.

引用

页码：273 / 278

页数：6

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