标题： twisted 光子激发核的多极跃迁 显示英文标题

标题： Excitation of multipolar transitions in nuclei by twisted photons

摘要： 扭曲光子被原子核吸收的概率的明确表达式已被获得。 结果表明，当核位于沿扭曲光子传播的总角动量投影为$m_\gamma$的轴附近时，光吸收服从选择定则$j\geqslant|m_\gamma|$，其中$j$是核跃迁的多重性。 在长波极限下，扭曲光子吸收概率的主要贡献来自多重极跃迁$j=|m_\gamma|$。 发现了一个由许多核组成的靶中扭曲光子的吸收系数。 显示英文摘要

摘要： The explicit expression for the probability of absorption of a twisted photon by an atomic nucleus has been obtained. It is shown that photoabsorption obeys the selection rule $j\geqslant|m_\gamma|$, where $j$ is the multipolarity of the nuclear transition, when the nuclei lie near the axis along which a twisted photon with a projection of the total angular momentum $m_\gamma$ propagates. In the long-wave limit, the main contribution to the probability of absorption of a twisted photon comes from the multipole transition with $j=|m_\gamma|$. The absorption coefficient for twisted photons in a target consisting of many nuclei has been found.