Competition between <em>&alpha;</em>-decay and &beta;-decay for heavy andsuperheavy nuclei

HENG Zong-Qiang; SHU Liang-Ping; MENG Ying; HU Ji-Gang; QIAN Jian-Fa

doi:10.1088/1674-1137/38/12/124101

Chinese Physics C> 2014, Vol. 38> Issue(12) : 124101 DOI: 10.1088/1674-1137/38/12/124101

Competition between α-decay and β-decay for heavy andsuperheavy nuclei

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Abstract：
In this work, the β-stable region for Z≥90 is proposed based on a successful binding energy formula. The calculated β-stable nuclei in the β-stable region are in good agreement with the ones obtained by Möller et al. The half-lives of the nuclei close to the β-stable region are calculated and the competition between α-decay and β-decay is systematically investigated. The calculated half-lives and the suggested decay modes are well in line with the experimental results. The decay modes are mostly β^--decay above the β-stable region. Especially for Z≤111, all the decay modes are β^--decay. Regarding the nuclei above the β-stable region, α-decay and β^--decay (α+β^-) can occur simultaneously when Z≥112. This is a very interesting phenomenon. The competition between α-decay and β-decay is very complex and drastic below the β-stable region. The predictions for half-lives and decay modes of the nuclei with Z=107-110 are presented in detail.

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[1]

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HENG Zong-Qiang, SHU Liang-Ping, MENG Ying, HU Ji-Gang and QIAN Jian-Fa. Competition between α-decay and β-decay for heavy andsuperheavy nuclei[J]. Chinese Physics C, 2014, 38(12): 124101. doi: 10.1088/1674-1137/38/12/124101

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Received: 2014-01-15
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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Competition between α-decay and β-decay for heavy andsuperheavy nuclei

Corresponding author: HENG Zong-Qiang,

Received Date: 2014-01-15

Accepted Date: 1900-01-01

Available Online: 2014-12-05

Abstract: In this work, the β-stable region for Z≥90 is proposed based on a successful binding energy formula. The calculated β-stable nuclei in the β-stable region are in good agreement with the ones obtained by Möller et al. The half-lives of the nuclei close to the β-stable region are calculated and the competition between α-decay and β-decay is systematically investigated. The calculated half-lives and the suggested decay modes are well in line with the experimental results. The decay modes are mostly β^--decay above the β-stable region. Especially for Z≤111, all the decay modes are β^--decay. Regarding the nuclei above the β-stable region, α-decay and β^--decay (α+β^-) can occur simultaneously when Z≥112. This is a very interesting phenomenon. The competition between α-decay and β-decay is very complex and drastic below the β-stable region. The predictions for half-lives and decay modes of the nuclei with Z=107-110 are presented in detail.

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Competition between α-decay and β-decay for heavy andsuperheavy nuclei

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Competition between α-decay and β-decay for heavy andsuperheavy nuclei

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