Exchange part of the real α-nucleus potential -: art. no. 037603

被引：16
|
作者：
Ismail, M [1 ]
Osman, MM [1 ]
Salah, F [1 ]
机构：
[1] Cairo Univ, Fac Sci, Dept Phys, Giza, Egypt
来源：
PHYSICAL REVIEW C | 1999年 / 60卷 / 03期
关键词：
D O I：
10.1103/PhysRevC.60.037603
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
We improved the accuracy of calculating the exchange alpha-nucleus real potential by suggesting a simple expression for the nondiagonal density matrix of alpha-particle {rho(alpha)((r) over right arrow<(r)over right arrow'>)}. We found that this expression reduces the error in calculating the total alpha-nucleus potential by more than 20% compared with using the density matrix expansion method to treat rho(alpha)((r) over right arrow<(r)over right arrow'>). [S0556-2813(99)04903-1].
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