Single-particle resonances in a deformed Dirac equation

Single-particle resonances in a deformed Dirac equation
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变形狄拉克方程中的单粒子共振

DOI:
10.1103/physrevc.81.034311
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发表时间:
2010-03
期刊:
影响因子:
3.1
通讯作者:
Li, Z. P.
Li, Z. P.
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Zhang, Y.;Meng, J.;Savushkin, L. N.;Zhou, S. G.;Li, Z. P.

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用耦合通道方法在坐标空间中求解具有四极变形的Wood-Saxon势的Dirac方程,得到了单粒子的束缚态和共振态。以形变为{beta}=0.1的m{sup{pi}=1/2{sup+}共振态为例,根据本征位相的行为和相应的球势加权概率,研究了它们的球面分量的作用.结果表明,m{sup{pi}}=1/2{sup+}共振的实现主要由lnot=0分量支持,而S{sub1/2}分量的混合会导致在有限能量下某些共振的消失。在小能区,lnot=0分量(d{sub3/2})的优势保证了某种共振对相应束缚态的延续。
Single-particle bound and resonant states are obtained by solving the Dirac equation with quadrupole-deformed Woods-Saxon potential in coordinate space with the coupled-channel approach. Taking the m{sup {pi}}=1/2{sup +} resonant states at deformation {beta}=0.1 as examples, the roles of their spherical components have been investigated based on the behaviors of the eigenphases and the corresponding probabilities weighted by the scalar spherical potential. It is shown that the realization of the m{sup {pi}}=1/2{sup +} resonances is supported mainly by the lnot =0 components, and the mixture of the s{sub 1/2} component can lead to the disappearance of some resonances at finite energy. The dominance of the lnot =0 component (d{sub 3/2}) in the small-energy region guarantees the continuation of a certain resonance to the corresponding bound state.
DOI: 10.1103/physreva.2.1101
发表时间: 1970-09
期刊: Physical Review A
影响因子: 2.9
作者:
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