dorsal/arxiv
View SchemaAlpha-decay properties of superheavy elements $Z=113-125$ in the relativistic mean-field theory with vector self-coupling of $\omega$ meson
| Authors | M. M. Sharma, A. R. Farhan, G. Münzenberg |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0409066 |
| URL | https://arxiv.org/abs/nucl-th/0409066 |
| DOI | 10.1103/PhysRevC.71.054310 |
| Journal | Phys.Rev. C71 (2005) 054310 |
Abstract
We have investigated properties of $\alpha$-decay chains of recently produced superheavy elements Z=115 and Z=113 using the new Lagrangian model NL-SV1 with inclusion of the vector self-coupling of $\omega$ meson in the framework of the relativistic mean-field theory. It is shown that the experimentally observed alpha-decay energies and half-lives are reproduced well by this Lagrangian model. Further calculations for the heavier elements with Z=117-125 show that these nuclei are superdeformed with a prolate shape in the ground state. A superdeformed shell-closure at Z=118 lends an additional binding and an extra stability to nuclei in this region. Consequently, it is predicted that the corresponding $Q_\alpha$ values provide $\alpha$-decay half-lives for heavier superheavy nuclei within the experimentally feasible conditions. The results are compared with those of macroscopic-microscopic approaches. A perspective of the difference in shell effects amongst various approaches is presented and its consequences on superheavy nuclei are discussed.
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"abstract": "We have investigated properties of $\\alpha$-decay chains of recently produced\nsuperheavy elements Z=115 and Z=113 using the new Lagrangian model NL-SV1 with\ninclusion of the vector self-coupling of $\\omega$ meson in the framework of the\nrelativistic mean-field theory. It is shown that the experimentally observed\nalpha-decay energies and half-lives are reproduced well by this Lagrangian\nmodel. Further calculations for the heavier elements with Z=117-125 show that\nthese nuclei are superdeformed with a prolate shape in the ground state. A\nsuperdeformed shell-closure at Z=118 lends an additional binding and an extra\nstability to nuclei in this region. Consequently, it is predicted that the\ncorresponding $Q_\\alpha$ values provide $\\alpha$-decay half-lives for heavier\nsuperheavy nuclei within the experimentally feasible conditions. The results\nare compared with those of macroscopic-microscopic approaches. A perspective of\nthe difference in shell effects amongst various approaches is presented and its\nconsequences on superheavy nuclei are discussed.",
"arxiv_id": "nucl-th/0409066",
"authors": [
"M. M. Sharma",
"A. R. Farhan",
"G. M\u00fcnzenberg"
],
"categories": [
"nucl-th",
"nucl-ex"
],
"doi": "10.1103/PhysRevC.71.054310",
"journal_ref": "Phys.Rev. C71 (2005) 054310",
"title": "Alpha-decay properties of superheavy elements $Z=113-125$ in the relativistic mean-field theory with vector self-coupling of $\\omega$ meson",
"url": "https://arxiv.org/abs/nucl-th/0409066"
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