arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1502.07111nucl-th
收藏

截止Woods-Saxon势中宽中子共振态的计算

Calculating broad neutron resonances in a cut-off Woods-Saxon potential

Á. Baran, Cs. Noszály, P. Salamon, T. Vertse

摘要:

在实际深度为$S$的截止Woods-Saxon(CWS)势中,远离虚波数轴的矩阵极点形成一个序列,其中连续共振的距离与截止半径值成反比,这是一个非物理参数。其他靠近虚波数轴的极点可能会随着势的深度增加而具有不规则形状的轨迹。靠近的极点相互排斥,它们的排斥力导致了相应轨迹方向的变化。斥力可能导致某些共振成为反束缚,然后当它们在虚轴上碰撞时再次共振。相互作用是非常敏感的截止半径值,这是一个明显的障碍CWS潜力。

英文摘要:

In a cut-off Woods-Saxon (CWS) potential with realistic depth $S$-matrix poles being far from the imaginary wave number axis form a sequence where the distances of the consecutive resonances are inversely proportional with the cut-off radius value, which is an unphysical parameter. Other poles lying closer to the imaginary wave number axis might have trajectories with irregular shapes as the depth of the potential increases. Poles being close repel each other, and their repulsion is responsible for the changes of the directions of the corresponding trajectories. The repulsion might cause that certain resonances become antibound and later resonances again when they collide on the imaginary axis. The interaction is extremely sensitive to the cut-off radius value, which is an apparent handicap of the CWS potential.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑