Reexamination of the Optical Gamma Ray Decay inT229h

Autor:	R. W. Lougheed, M. S. Weiss, A. V. Barnes, J. R. Crespo López-Urrutia, J. A. Becker, Peter Beiersdorfer, S. B. Utter
Rok vydání:	1999
Předmět:	Physics Optical measurements Gamma ray General Physics and Astronomy Thorium chemistry.chemical_element Fluorescence Nuclear physics chemistry Uranium-233 Excited state Light emission Gamma spectroscopy Atomic physics
Zdroj:	Physical Review Letters. 82:505-508
ISSN:	1079-7114 0031-9007
Popis:	Optical measurements of a clean, $2\ensuremath{-}\ensuremath{\mu}\mathrm{C}$ ${}^{233}\mathrm{U}$ sample were made to verify light emission from gamma ray decay of the first excited nuclear level in ${}^{229}\mathrm{Th}$. The results showed that the light observed in earlier studies was likely to be caused by alpha-particle induced fluorescence of air. In vacuo, no light emission was discernable. The ${}^{229}\mathrm{Th}$ system, therefore, does not appear to provide the level of access for studying atomic-nuclear interactions suggested by the previous measurements.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::184f237f480288bacad5cb7c425621a8 https://doi.org/10.1103/physrevlett.82.505 Zobrazit plný text záznamu