The inelastic scattering cross section for muons, , with energies = 9–100 eV from the Th nuclei is calculated in the framework of the second order of the perturbation theory for quantum electrodynamics. The dominant contribution to the excitation of the low energy isomer Th eV) originates from the multipole. The excitation cross section reaches the value of cm in the range 10 eV. This value is four to five orders of magnitude larger than the electron excitation cross section and is sufficient for the efficient excitation of Th on the muon beam at the next generation of muon colliders.

中文翻译：

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低能μ子的库仑激发横截面 这项研究得到了俄罗斯科学基金会的资助（项目编号 19-72-30014）

μ 子的非弹性散射截面，来自Th 核的能量= 9–100 eV，是在量子电动力学的二阶微扰理论的框架中计算的。激发低能异构体Th eV)的主要贡献来自多极。激发截面在10 eV范围内达到cm值。这个值比电子激发截面大四到五个数量级，足以在下一代μ子对撞机上有效地激发μ子束上的Th。