Continuum QRPA in the coordinate space representation

被引：39
|
作者：
Hagino, K [1 ]
Sagawa, H
机构：
[1] Kyoto Univ, Yukawa Inst Theoret Phys, Kyoto 6068502, Japan
[2] Univ Aizu, Ctr Math Sci, Fukushima 9658580, Japan
来源：
NUCLEAR PHYSICS A | 2001年 / 695卷
关键词：
random phase approximation; continuum; pairing; collective excitation; giant resonance; low-lying mode;
D O I：
10.1016/S0375-9474(01)01122-8
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 formulate a quasiparticle random phase approximation (QRPA) in the coordinate space representation. This model is a natural extension of the RPA model of Shlomo and Bertsch to open-shell nuclei in order to take into account pairing correlations together with the coupling to the continuum. We apply it to the Sn-120 nucleus and show that low-lying excitation modes are significantly influenced by the pairing effects although the effects are marginal in the giant resonance region. The dependence of the pairing effect on the parity of low-lying. collective mode is also discussed. (C) 2001 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：82 / 94
页数：13
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