dorsal/arxiv
View SchemaPredictions of Alpha Decay Half lives of Heavy and Superheavy Elements
| Authors | C. Samanta, P. Roy Chowdhury, D. N. Basu |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0703086 |
| URL | https://arxiv.org/abs/nucl-th/0703086 |
| DOI | 10.1016/j.nuclphysa.2007.04.001 |
| Journal | Nucl.Phys.A789:142-154,2007 |
Abstract
Theoretical estimates for the lifetimes of several isotopes of heavy elements with Z=102-120 are presented by calculating the quantum mechanical tunneling probability in a WKB framework and using microscopic nucleus-nucleus potential obtained by folding the densities of interacting nuclei with the DDM3Y effective nuclear interaction. The $\alpha$-decay half lives calculated in this formalism using the experimental $Q$-values are in good agreement over a wide range of experimental data. Half lives are also calculated using $Q$-values extracted from two mass formulae. The Viola-Seaborg-Sobiczewski (VSS) estimates of $\alpha$-decay half lives with the same $Q$-values are presented for comparison. The half life calculations are found to be quite sensitive to the choice of $Q$-values. Comparison with the experimental data delineates the inadequacies of older mass predictions in the domain of heavy and superheavy elements as compared to the newer one by Muntian-Hofmann-Patyk-Sobiczewski, and highlights necessity of a more accurate mass formula which can predict $Q$-values with even higher precision.
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"abstract": "Theoretical estimates for the lifetimes of several isotopes of heavy elements\nwith Z=102-120 are presented by calculating the quantum mechanical tunneling\nprobability in a WKB framework and using microscopic nucleus-nucleus potential\nobtained by folding the densities of interacting nuclei with the DDM3Y\neffective nuclear interaction. The $\\alpha$-decay half lives calculated in this\nformalism using the experimental $Q$-values are in good agreement over a wide\nrange of experimental data. Half lives are also calculated using $Q$-values\nextracted from two mass formulae. The Viola-Seaborg-Sobiczewski (VSS) estimates\nof $\\alpha$-decay half lives with the same $Q$-values are presented for\ncomparison. The half life calculations are found to be quite sensitive to the\nchoice of $Q$-values. Comparison with the experimental data delineates the\ninadequacies of older mass predictions in the domain of heavy and superheavy\nelements as compared to the newer one by Muntian-Hofmann-Patyk-Sobiczewski, and\nhighlights necessity of a more accurate mass formula which can predict\n$Q$-values with even higher precision.",
"arxiv_id": "nucl-th/0703086",
"authors": [
"C. Samanta",
"P. Roy Chowdhury",
"D. N. Basu"
],
"categories": [
"nucl-th",
"astro-ph",
"nucl-ex",
"quant-ph"
],
"doi": "10.1016/j.nuclphysa.2007.04.001",
"journal_ref": "Nucl.Phys.A789:142-154,2007",
"title": "Predictions of Alpha Decay Half lives of Heavy and Superheavy Elements",
"url": "https://arxiv.org/abs/nucl-th/0703086"
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