Publication:
Decay of the low-energy nuclear Th 229m isomer via atomic Rydberg states

Дата
2019
Авторы
Tkalya, E. V.
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Научные группы
Организационные подразделения
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Институт лазерных и плазменных технологий
Стратегическая цель Института ЛаПлаз – стать ведущей научной школой и ядром развития инноваций по лазерным, плазменным, радиационным и ускорительным технологиям, с уникальными образовательными программами, востребованными на российском и мировом рынке образовательных услуг.
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Аннотация
© 2019 American Physical Society.In the paper, a unique process of the decay of the Th229m(3/2+,8.28±0.17 eV) low-energy nuclear isomer via the internal conversion (IC) channel on Rydberg states is considered for the first time. The Rydberg atom Th+229m+eRy- is a unique object where IC is possible exclusively on the Rydberg electron eRy-. It is shown that in the Th4+229m+eRy- system (a) IC on the electron states with relatively small values of the principal quantum number n and the orbital moment l is practically completely suppressed, (b) IC probability, WIC, on the ψns1/2(r) states is proportional to |ψns1/2(0)|2 and can be related with the energy of the hyperfine interaction of the Rydberg electron with the nucleus, (c) WIC decreases rapidly with the increase of n in the range from 10 to 50, and in the range n 150WIC changes as const/n3 typical for hydrogen-like ions, and (d) at n≈10-30, WIC as a function of l has a characteristic "knee" between l=3 and l=4, i.e., a decrease of three orders of magnitude in WIC due to the qualitative change in the ratio between the centrifugal and shielding potentials.
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Цитирование
Tkalya, E. V. Decay of the low-energy nuclear Th 229m isomer via atomic Rydberg states / Tkalya, E.V. // Physical Review C. - 2019. - 100. - № 5. - 10.1103/PhysRevC.100.054316
URI
https://www.doi.org/10.1103/PhysRevC.100.054316
 https://www.scopus.com/record/display.uri?eid=2-s2.0-85075066140&origin=resultslist
 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000495969200003
 https://openrepository.mephi.ru/handle/123456789/18880
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