Electron-β-Nuclear Spectroscopy of Atoms and Molecules and Chemical Bond Effect on the β-Decay Parameters View Full Text


Ontology type: schema:Chapter     


Chapter Info

DATE

2009

AUTHORS

Alexander V. Glushkov , Olga Yu. Khetselius , Ludmila Lovett

ABSTRACT

We discuss the cooperative electron β-nuclear processes in atoms and molecules, including the excitation, ionization, electronic rearrangement, induced by the nuclear reactions and β-decay. The relativistic many-body perturbation theory (PT) with the optimized Dirac–Kohn–Sham (DKS) zeroth approximation is used to calculate the β-decay parameters for a number of allowed (superallowed) transitions (33P–33S, 241Pu–241Am, etc.) and study a chemical bond effect on β-decay parameters. A few factors are taken into account: changing the integration limits in the Fermi function integral, energy corrections for different chemical substances and the possibility of the bound β-decay or other decay channels. We studied the electronic rearrangement induced by nuclear transmutation in the β-decay \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}${}_{\rm{2}}^{\rm{6}} {\rm{He}}_{\rm{4}} \to ({}_3^6 {\rm{Li}}_{\rm{3}}^{\rm{ + }} )^* + e^ - + \bar \nu _e $\end{document}. The half-life period T1 / 2 for β-decay of tritium atom (ion) has been estimated while taking into account the bound β-decay channel and some other accompanying effects. The estimated values of T1 / 2 for the tritium β-decay and free triton decay are (T1 / 2)a=12.26 years (correction due to the electron-atomic effects (Δ T1 / 2/T1 / 2)a=0.82%) for the tritium atom and (T1 / 2)t=12.36 years for the triton decay. These data are in physically reasonable agreement with experimental data. We first present the value T1 / 2 in a case of the β-decay in the halogen-containing molecular tritium (3HCl): (T1 / 2)m=12.28 years (3HCl) and the correction due to the chemical bond effect is (Δ T1 / 2)am=0.024 (i.e. 0.20%). More... »

PAGES

125-152

Book

TITLE

Advances in the Theory of Atomic and Molecular Systems

ISBN

978-90-481-2984-3
978-90-481-2985-0

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/978-90-481-2985-0_7

DOI

http://dx.doi.org/10.1007/978-90-481-2985-0_7

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1002770820


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