Abstract
Accurate experimental internal conversion data have been used to study the effect of nuclear penetration in the case of thel-forbidden transitions in139La (165.8 keV),141Pr (145.4 keV) and203Tl (279.2 keV). The nuclear penetration parameterλ and theE2/M 1 mixing ratioδ 2 have been deduced by graphical analysis. Following results were obtained:λ=2.8±1.3,δ 2 =(8.4 +14.0−8.4 )·10−4 for139La,λ=1.2±0.6,δ 2=(4.8±0.5)·10−3 for141Pr, andλ=6.4±1.1,δ 2=1.36±0.12 for203Tl.
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Hansen, H.H. Nuclear structure effect on internal conversion ofl-forbidden transitions in139La,141Pr and203Tl. Z Physik A 291, 43–47 (1979). https://doi.org/10.1007/BF01415815
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DOI: https://doi.org/10.1007/BF01415815