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Decay Rate of the Nuclear Isomer 229Th(3/2+,7.8 eV) in a Dielectric Sphere, Thin Film, and Metal Cavityстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 10 августа 2018 г.
- Автор: Tkalya E.V.
- Журнал: Physical Review Letters
- Том: 120
- Номер: 12
- Год издания: 2018
- Издательство: American Physical Society
- Местоположение издательства: United States
- Первая страница: 122501
- DOI: 10.1103/PhysRevLett.120.122501
- Аннотация: The main decay channels of the anomalous low-energy 3/2+,7.8 +/- 0.5 eV isomeric level of the 229Th nucleus, namely the γ emission and internal conversion, inside a dielectric sphere, dielectric thin film, and conducting spherical microcavity are investigated theoretically, taking into account the effect of media interfaces. It is shown that (1) the γ decay rate of the nuclear isomer inside a dielectric thin film and dielectric microsphere placed in a vacuum or in a metal cavity can decrease (increase) in dozen of times, (2) the γ activity of the distributed source as a function of time can be nonexponential, and (3) the metal cavity, whose size is of the order of the radiation wavelength, does not affect the probability of the internal conversion in 229Th, because the virtual photon attenuates at much shorter distances and the reflected wave is very weak.
- Добавил в систему: Ткаля Евгений Викторович