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Title: {alpha}-nucleus potentials, {alpha}-decay half-lives, and shell closures for superheavy nuclei

Abstract

Systematic {alpha}-nucleus folding potentials are used to analyze {alpha}-decay half-lives of superheavy nuclei. Preformation factors of about several percent are found for all nuclei under study. The systematic behavior of the preformation factors and the volume integrals of the potentials allows predictions of {alpha}-decay energies and half-lives for unknown nuclei. Shell closures can be determined from measured {alpha}-decay energies using the discontinuity of the volume integral at shell closures. For the first time a double shell closure is predicted for Z{sub magic}=132,N{sub magic}=194, and A{sub magic}=326 from the systematics of folding potentials. The calculated {alpha}-decay half-lives remain far below 1 ns for superheavy nuclei with double shell closure and masses A>300 independent of the precise knowledge of the magic proton and neutron numbers.

Authors:
 [1]
  1. Diakoniekrankenhaus Schwaebisch Hall, D-74523 Schwaebisch Hall (Germany)
Publication Date:
OSTI Identifier:
20771312
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. C, Nuclear Physics; Journal Volume: 73; Journal Issue: 3; Other Information: DOI: 10.1103/PhysRevC.73.031301; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; ALPHA DECAY; HALF-LIFE; MAGIC NUCLEI; NEUTRONS; NUCLEAR POTENTIAL; PROTONS; SHELL MODELS; TRANSACTINIDE ELEMENTS

Citation Formats

Mohr, Peter. {alpha}-nucleus potentials, {alpha}-decay half-lives, and shell closures for superheavy nuclei. United States: N. p., 2006. Web. doi:10.1103/PhysRevC.73.031301.
Mohr, Peter. {alpha}-nucleus potentials, {alpha}-decay half-lives, and shell closures for superheavy nuclei. United States. doi:10.1103/PhysRevC.73.031301.
Mohr, Peter. Wed . "{alpha}-nucleus potentials, {alpha}-decay half-lives, and shell closures for superheavy nuclei". United States. doi:10.1103/PhysRevC.73.031301.
@article{osti_20771312,
title = {{alpha}-nucleus potentials, {alpha}-decay half-lives, and shell closures for superheavy nuclei},
author = {Mohr, Peter},
abstractNote = {Systematic {alpha}-nucleus folding potentials are used to analyze {alpha}-decay half-lives of superheavy nuclei. Preformation factors of about several percent are found for all nuclei under study. The systematic behavior of the preformation factors and the volume integrals of the potentials allows predictions of {alpha}-decay energies and half-lives for unknown nuclei. Shell closures can be determined from measured {alpha}-decay energies using the discontinuity of the volume integral at shell closures. For the first time a double shell closure is predicted for Z{sub magic}=132,N{sub magic}=194, and A{sub magic}=326 from the systematics of folding potentials. The calculated {alpha}-decay half-lives remain far below 1 ns for superheavy nuclei with double shell closure and masses A>300 independent of the precise knowledge of the magic proton and neutron numbers.},
doi = {10.1103/PhysRevC.73.031301},
journal = {Physical Review. C, Nuclear Physics},
number = 3,
volume = 73,
place = {United States},
year = {Wed Mar 15 00:00:00 EST 2006},
month = {Wed Mar 15 00:00:00 EST 2006}
}