GRAPHICAL PRESENTATION OF ALPHA-DECAY PROCESSES

Moon H. Cha () and Yeong E. Kim
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Moon H. Cha: Department of Physics, Purdue University, West Lafayette, IN 47907-1396, USA
Yeong E. Kim: Department of Physics, Purdue University, West Lafayette, IN 47907-1396, USA

International Journal of Modern Physics C (IJMPC), 1999, vol. 10, issue 01, 17-27

Abstract: We illustrate wavefunctions and half-lives ofα-radioactive even-A thorium isotopes based on the simple semi-classical theory of alpha-decay process. The potential is assumed to take an attractive square-well form inside the potential barrier and to take a repulsive Coulomb one outside the barrier. Overall for the even-A thorium isotopes, only two parametersr0=1.14fm andV0=16MeV are used. Outside the region of a potential barrier, an obvious oscillating feature of wavefunction for218Thnucleus does not appear until theQαvalue is less than 20 MeV. Such a characteristic feature is confirmed by the three dimensional surface plot for the wave function of218Thnucleus. Our predicted values of half-life for even-A thorium isotopes are agreed satisfactorily with the observed results as a whole.

Keywords: Alpha-decay; Coulomb potential barrier; Half-life; Wavefunction (search for similar items in EconPapers)
Date: 1999
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DOI: 10.1142/S0129183199000036

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