Cross section of the Coulomb excitation of 229mTh by low energy muonsстатья
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Дата последнего поиска статьи во внешних источниках: 23 сентября 2021 г.
Местоположение издательства:[Bristol, UK], England
Номер статьи:094102
Аннотация:The inelastic scattering cross section for muons, $ \mu^- $, 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\pm0.12 $ eV) originates from the $ E2 $ multipole. The excitation cross section reaches the value of $ 10^{-21} $ cm $ ^2 $ in the range $ E\approx $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.