Weak decays of H–like 140 Pr 58+ and He–like 140 Pr 57+ ions
نویسنده
چکیده
The nuclear K–shell electron–capture (EC) and positron (β) decay constants, λEC and λβ+ of H–like Pr and He–like Pr ions, measured recently in the ESR ion storage ring at GSI, were calculated using standard weak interaction theory. The calculated ratios R = λEC/λβ+ of the decay constants agree with the experimental values within an accuracy better than 3%. The anomalous experimental value of the ratio of the EC–decay constants of the H–like and He–like ions of 1.49(8) is explained as an effect of the hyperfine structure of the K–electron in the H–like Pr ion. PACS: 12.15.Ff, 13.15.+g, 23.40.Bw, 26.65.+t
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1 0 Fe b 20 08 Weak decays of H – like 140 Pr 58 + and He – like 140 Pr 57 + ions
The nuclear K–shell electron–capture (EC) and positron (β+) decay constants, λEC and λβ+ of H–like 140Pr and He–like 140Pr ions, measured recently in the ESR ion storage ring at GSI, were calculated using standard weak interaction theory. The calculated ratios R = λEC/λβ+ of the decay constants agree with the experimental values within an accuracy better than 3%. PACS: 12.15.Ff, 13.15.+g, 23.40...
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