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arXiv · 1004.2309

Alpha-decay half-lives and Q_alpha values of superheavy nuclei

Jianmin Dong·Wei Zuo·Jianzhong Gu·Yanzhao Wang·Bangbao Peng
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Abstract

The alpha-decay half-lives of recently synthesized superheavy nuclei (SHN) are investigated based on a unified fission model (UFM) where a new method to calculate the assault frequency of alpha-emission is used. The excellent agreement with the experimental data indicates the UFM is a useful tool to investigate these alpha-decays. It is found that the half-lives become more and more insensitive to the Q_alpha values as the atomic number increases on the whole, which is favorable for us to predict the half-lives of SHN. In addition, a formula is suggested to compute the Q_alpha values for the nuclei with Z > 92 and N > 140 with a good accuracy, according to which the long-lived SHN should be neutron rich. With Q_alpha values from this formula as inputs, we predict the half-lives of isotopes of Z = 117, which may be useful for experimental identication in the future.

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Jianmin Dong, Wei Zuo, Jianzhong Gu, Yanzhao Wang, Bangbao Peng. 2010-04-14. Alpha-decay half-lives and Q_alpha values of superheavy nuclei. https://doi.org/10.1103/physrevc.81.064309

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