16 июня 2026 г. в 12:00 состоится семинар лаборатории Теоретической электродинамики конденсированного состояния ИТПЭ РАН (под рук. д.ф.-м.н. А.Л. Рахманова)
Адрес: ул. Красноказарменная, 17а (фактически находится на ул. Лапина, 17а), комн. 513
Автор доклада: Николаев А.В. (НИИЯФ МГУ им. М.В. Ломоносова)
Тема:
Impact of the small Dirac component on the valence electron density of actinides at their nuclei in solids
Аннотация:
We include the small components of valence states of actinides in the calculation scheme within the linear augmented plane wave method (LAPW) for solids and study their influence on the electron density at the actinide nuclear region, which is important for such processes as electron capture, beta decay, internal conversion and others. The method was applied to Ac, Th, ThO2 and UO2. We find that, depending on the material, the electron density of valence electrons at the nucleus increases by a factor of 2.4-4.3 (the total change including the core contribution is much smaller), and this increase is due to the electron density from the small components of the 6p1/2 semicore states.