Excitation of Giant Multipole Resonances in Muonic Actinide Atoms
摘要
Abstract
In muonic 238U atoms, the nuclei can undergo prompt fission via nonradiative muon transitions: 2p–1s, 3p–1s, 3d–1s, etc. The main features of fission dynamics during prompt fission are studied: barrier increase, saddle-to-scission transition dynamics, muon conversion, and characteristic X-ray emission from fission fragments provide comprehensive information on fission dynamics and fragment properties. The effect of fission suppression in muonic 238U atoms on the GDR shape and the probability of its nonradiative excitation in 3p–1s transitions is demonstrated. A simple interpretation of the energy dependence of the observed GDR width is proposed.