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Volume 34 Issue 3
Jul.  2017
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ZHOU Yong, LI Zhihong, CHENG Yongshou, WANG Youbao, SU Jun, GUO Bing, LIU Weiping. Estimate of β--decay Half-lives for r-process Nuclei[J]. Nuclear Physics Review, 2017, 34(3): 425-430. doi: 10.11804/NuclPhysRev.34.03.425
Citation: ZHOU Yong, LI Zhihong, CHENG Yongshou, WANG Youbao, SU Jun, GUO Bing, LIU Weiping. Estimate of β--decay Half-lives for r-process Nuclei[J]. Nuclear Physics Review, 2017, 34(3): 425-430. doi: 10.11804/NuclPhysRev.34.03.425

Estimate of β--decay Half-lives for r-process Nuclei

doi: 10.11804/NuclPhysRev.34.03.425
Funds:  National Natural Science Foundation of China(11321064)
  • Received Date: 2016-12-09
  • Rev Recd Date: 2017-05-12
  • Publish Date: 2017-07-18
  • Experimental data of the β--decay half-lives for the nuclei with atomic number between 20 and 190 are investigated. We have systematically studied the shell effects and pairing effects on β--decay half-lives versus the decay energy Q and nucleon numbers (Z, N). An empirical formula has been proposed to calculate the β--decay half-lives of neutron-rich nuclei. The empirical formula is simple and has relatively few parameters. Experimental β--decay half-lives of the neutron-rich nuclei are well reproduced by the new formula. In addition, the extrapolating capacity of this formula has been checked with the very recent experimental data from RIKEN. The predicted half-lives for r-process relevant nuclei with the current formula can be served as the reliable input of r-process model calculations.
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Estimate of β--decay Half-lives for r-process Nuclei

doi: 10.11804/NuclPhysRev.34.03.425
Funds:  National Natural Science Foundation of China(11321064)

Abstract: Experimental data of the β--decay half-lives for the nuclei with atomic number between 20 and 190 are investigated. We have systematically studied the shell effects and pairing effects on β--decay half-lives versus the decay energy Q and nucleon numbers (Z, N). An empirical formula has been proposed to calculate the β--decay half-lives of neutron-rich nuclei. The empirical formula is simple and has relatively few parameters. Experimental β--decay half-lives of the neutron-rich nuclei are well reproduced by the new formula. In addition, the extrapolating capacity of this formula has been checked with the very recent experimental data from RIKEN. The predicted half-lives for r-process relevant nuclei with the current formula can be served as the reliable input of r-process model calculations.

ZHOU Yong, LI Zhihong, CHENG Yongshou, WANG Youbao, SU Jun, GUO Bing, LIU Weiping. Estimate of β--decay Half-lives for r-process Nuclei[J]. Nuclear Physics Review, 2017, 34(3): 425-430. doi: 10.11804/NuclPhysRev.34.03.425
Citation: ZHOU Yong, LI Zhihong, CHENG Yongshou, WANG Youbao, SU Jun, GUO Bing, LIU Weiping. Estimate of β--decay Half-lives for r-process Nuclei[J]. Nuclear Physics Review, 2017, 34(3): 425-430. doi: 10.11804/NuclPhysRev.34.03.425
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