Cross section of the Coulomb excitation of ^(229m)Th by low energy muons  

作　　者：E.V.Tkalya 

机构地区：[1]P.N.Lebedev Physical Institute of the Russian Academy of Sciences,119991,53 Leninskiy pr.,Moscow,Russia [2]National Research Nuclear University MEPhI,115409,Kashirskoe shosse 31,Moscow,Russia [3]Nuclear Safety Institute of RAS,Bofshaya Tulskaya 52,Moscow 115191,Russia

出　　处：《Chinese Physics C》2021年第9期143-147,共5页中国物理C（英文版）

基　　金：supported by a grant of the Russian Science Foundation(Project No 19-72-30014)。

摘　　要：The inelastic scattering cross section for muons,μ^(-),with energies E=9-100 eV from the ^(229)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 ^(229m)Th(3/2^(+),8.19±0.12 eV)originates from the E2 multipole.The excitation cross section reaches the value of 10^(-21) cm^(2) in the range E≈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 ^(229m)Th on the muon beam at the next generation of muon colliders.

关 键 词：cross section MUON Coulomb excitation Th-229 

分 类 号：O572.323[理学—粒子物理与原子核物理]