期刊
PHYSICAL REVIEW A
卷 89, 期 1, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.89.012512
关键词
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资金
- Fundacao para a Ciencia e a Tecnologia (FCT), Portugal [PEstOE/FIS/UI0303/2011, PTDC/FIS/117606/2010]
- Allianz Program of the Helmholtz Association [EMMI HA-216]
- FCT [SFRH/BPD/69627/2010]
- Fundação para a Ciência e a Tecnologia [SFRH/BPD/69627/2010] Funding Source: FCT
Fluorescence yields are one of the fundamental parameters in atomic physics and related areas. Despite the increase of experimental work in the last decade, to obtain values of K-shell fluorescence yields available data are scarce or outdated for many elements. The available theoretical results cannot fill the gap since quite often they are derived from semi-empirical calculations based on old models. This is the case of Ge that has many applications in science. In this work, we present the results of a collaboration between an experimental and a theoretical group to obtain the decay rates and fluorescence yields for Ge. The calculations were performed within the Dirac-Fock method, including relativistic and QED corrections, using a state-of-the-art approach. The experimental work was carried out at the SOLEIL synchrotron and the fluorescence yields were measured by two distinct methods: the reflection geometry method and the escape peak method. The results show a very good agreement between the experiment and theory (1.1%), well within the experimental uncertainty (2.4%).
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