Abstract The observed alpha decay half-life values of favoured alpha transitions of = 5 in bismuth isotopes have been analysed in the framework of a model based on quantum mechanical tunnelling through a potential barrier where the centrifugal and overlapping effects are taken into account. In particular, the very recently measured alpha decay half-life value of (1.9 ± 0.2) × 1019 y for the unique naturally occurring 209Bi isotope has been reproduced by the present approach as (1.0 ± 0.3) × 1019 y. Also, the partial alpha decay half-lives for a number of unmeasured alpha transitions of = 5 in bismuth isotopes are predicted by the model, thus making it possible to demonstrate the influence of the 126 neutron shell closure on the alpha decay half-life. The present approach is shown to be successfully applicable to other isotopic sequences of alpha-emitter nuclides.

Tavares, O., Medeiros, E., TERRANOVA PERSICHELLI, M.l. (2005). Alpha decay half-life of bismuth isotopes. JOURNAL OF PHYSICS. G, NUCLEAR AND PARTICLE PHYSICS, 31, 129-139 [10.1088/0954-3899/31/2/005].

Alpha decay half-life of bismuth isotopes

TERRANOVA PERSICHELLI, MARIA LETIZIA
2005

Abstract

Abstract The observed alpha decay half-life values of favoured alpha transitions of = 5 in bismuth isotopes have been analysed in the framework of a model based on quantum mechanical tunnelling through a potential barrier where the centrifugal and overlapping effects are taken into account. In particular, the very recently measured alpha decay half-life value of (1.9 ± 0.2) × 1019 y for the unique naturally occurring 209Bi isotope has been reproduced by the present approach as (1.0 ± 0.3) × 1019 y. Also, the partial alpha decay half-lives for a number of unmeasured alpha transitions of = 5 in bismuth isotopes are predicted by the model, thus making it possible to demonstrate the influence of the 126 neutron shell closure on the alpha decay half-life. The present approach is shown to be successfully applicable to other isotopic sequences of alpha-emitter nuclides.
Pubblicato
Rilevanza internazionale
Articolo
Sì, ma tipo non specificato
Settore CHIM/03 - Chimica Generale e Inorganica
English
Con Impact Factor ISI
alpha decay; bismuth; track detectors
Tavares, O., Medeiros, E., TERRANOVA PERSICHELLI, M.l. (2005). Alpha decay half-life of bismuth isotopes. JOURNAL OF PHYSICS. G, NUCLEAR AND PARTICLE PHYSICS, 31, 129-139 [10.1088/0954-3899/31/2/005].
Tavares, O; Medeiros, E; TERRANOVA PERSICHELLI, Ml
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/18024
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