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On the properties of charge-exchange dipole excitations and the T-> component of a giant dipole resonance in spherical nuclei

机译:球核中电荷交换偶极激发的性质和巨偶极子共振的T->分量

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摘要

Within the semimicroscopic approach based on the random-phase approximation that takes exactly into account a single-particle continuum and on a phenomenological inclusion of the fragmentation effect, it is proposed to describe the strength functions for charge-exchange giant dipole resonances and cross sections for photoabsorption and for partial "direct + semidirect" (gamma,p) reactions in the vicinity of a giant E1 resonance with allowance for the isospin-splitting effect. The results of the calculations performed for some magic and semimagic nuclei without resort to free parameters are compared with available experimental data.
机译:在基于随机相近似的半显微镜方法中,正好考虑了单个粒子的连续体,并且在碎裂效应的现象学上包含在内,提出了描述电荷交换巨型偶极子共振和截面的强度函数的方法。光吸收和在巨大E1共振附近的部分“直接+半直接”(γ,p)反应,并允许同位旋分裂效应。将一些不借助自由参数的魔术核和半魔术核的计算结果与可用的实验数据进行了比较。

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