Competition between {alpha} decay and spontaneous fission for heavy and superheavy nuclei

Chang, Xu; Zhongzhou, Ren; Yanqing, Guo

doi:10.1103/PHYSREVC.78.044329

Title: Competition between {alpha} decay and spontaneous fission for heavy and superheavy nuclei

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Abstract

We systematically investigate the {alpha}-decay and spontaneous fission half-lives for heavy and superheavy nuclei with proton number Z{>=}90. The {alpha}-decay half-lives are obtained by the deformed version of the density-dependent cluster model (DDCM). In the DDCM, the microscopic potential between the {alpha} particle and the daughter nucleus is evaluated numerically from the double-folding model with the M3Y interaction. The influence of the core deformation on the double-folding potential is also properly taken into account by the multipole expansion method. The spontaneous fission half-lives of nuclei from {sup 232}Th to {sup 286}114 are calculated with the parabolic potential approximation by taking nuclear structure effects into account. The agreement between theoretical results and the newly observed data is satisfactory for both {alpha} emitters and spontaneous fission nuclei. The competition between {alpha} decay and spontaneous fission is analyzed in detail and the branching ratios of these two decay modes are predicted for the unknown cases.

Authors:

Chang, Xu ^[1]; Zhongzhou, Ren ^[1]; Yanqing, Guo ^[1]

Department of Physics, Nanjing University, Nanjing 210008 (China)

Publication Date:: Wed Oct 15 00:00:00 EDT 2008

OSTI Identifier:: 21192308

Resource Type:: Journal Article

Journal Name:: Physical Review. C, Nuclear Physics

Additional Journal Information:: Journal Volume: 78; Journal Issue: 4; Other Information: DOI: 10.1103/PhysRevC.78.044329; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0556-2813

Country of Publication:: United States

Language:: English

Subject:: 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; ALPHA DECAY; ALPHA PARTICLES; APPROXIMATIONS; BRANCHING RATIO; CLUSTER MODEL; DEFORMATION; DENSITY; FOLDING MODEL; HALF-LIFE; INTERACTIONS; NUCLEAR STRUCTURE; PROTONS; SIMULATION; SPONTANEOUS FISSION; THORIUM 232; TRANSACTINIDE ELEMENTS

Citation Formats


                    Chang, Xu, CPNPC, Nanjing University, Nanjing 210008, Zhongzhou, Ren, Center of Theoretical Nuclear Physics, National Laboratory of Heavy-Ion Accelerator, Lanzhou 730000, CPNPC, Nanjing University, Nanjing 210008, Kavli Institute for Theoretical Physics China, Beijing 100190, and Yanqing, Guo. Competition between {alpha} decay and spontaneous fission for heavy and superheavy nuclei.  United States: N. p., 2008. 
        Web.  doi:10.1103/PHYSREVC.78.044329.

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                    Chang, Xu, CPNPC, Nanjing University, Nanjing 210008, Zhongzhou, Ren, Center of Theoretical Nuclear Physics, National Laboratory of Heavy-Ion Accelerator, Lanzhou 730000, CPNPC, Nanjing University, Nanjing 210008, Kavli Institute for Theoretical Physics China, Beijing 100190, & Yanqing, Guo. Competition between {alpha} decay and spontaneous fission for heavy and superheavy nuclei.  United States.  https://doi.org/10.1103/PHYSREVC.78.044329

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                    Chang, Xu, CPNPC, Nanjing University, Nanjing 210008, Zhongzhou, Ren, Center of Theoretical Nuclear Physics, National Laboratory of Heavy-Ion Accelerator, Lanzhou 730000, CPNPC, Nanjing University, Nanjing 210008, Kavli Institute for Theoretical Physics China, Beijing 100190, and Yanqing, Guo. 2008.  
        "Competition between {alpha} decay and spontaneous fission for heavy and superheavy nuclei".  United States.  https://doi.org/10.1103/PHYSREVC.78.044329.

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@article{osti_21192308,

  title        = {Competition between {alpha} decay and spontaneous fission for heavy and superheavy nuclei},

  author       = {Chang, Xu and CPNPC, Nanjing University, Nanjing 210008 and Zhongzhou, Ren and Center of Theoretical Nuclear Physics, National Laboratory of Heavy-Ion Accelerator, Lanzhou 730000 and CPNPC, Nanjing University, Nanjing 210008 and Kavli Institute for Theoretical Physics China, Beijing 100190 and Yanqing, Guo},

  abstractNote = {We systematically investigate the {alpha}-decay and spontaneous fission half-lives for heavy and superheavy nuclei with proton number Z{>=}90. The {alpha}-decay half-lives are obtained by the deformed version of the density-dependent cluster model (DDCM). In the DDCM, the microscopic potential between the {alpha} particle and the daughter nucleus is evaluated numerically from the double-folding model with the M3Y interaction. The influence of the core deformation on the double-folding potential is also properly taken into account by the multipole expansion method. The spontaneous fission half-lives of nuclei from {sup 232}Th to {sup 286}114 are calculated with the parabolic potential approximation by taking nuclear structure effects into account. The agreement between theoretical results and the newly observed data is satisfactory for both {alpha} emitters and spontaneous fission nuclei. The competition between {alpha} decay and spontaneous fission is analyzed in detail and the branching ratios of these two decay modes are predicted for the unknown cases.},

  doi          = {10.1103/PHYSREVC.78.044329},

  url          = {https://www.osti.gov/biblio/21192308},
  journal      = {Physical Review. C, Nuclear Physics},

  issn         = {0556-2813},

  number       = 4,

  volume       = 78,

  place        = {United States},

  year         = {Wed Oct 15 00:00:00 EDT 2008},

  month        = {Wed Oct 15 00:00:00 EDT 2008}

}

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