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Predictions on the modes of decay of odd Z superheavy isotopes within the range 105≤Z≤135
Atomic Data and Nuclear Data Tables ( IF 1.8 ) Pub Date : 2018-01-09 , DOI: 10.1016/j.adt.2017.12.001
K.P. Santhosh , C. Nithya

The decay modes of 1051 odd Z superheavy nuclei within the range 105 Z 135, and their daughter nuclei are studied by comparing the alpha decay half-lives with the spontaneous fission half-lives. The alpha decay half-lives are calculated using the Coulomb and proximity potential model for deformed nuclei (CPPMDN) proposed by Santhosh et al. (2011) and the spontaneous fission half-lives are obtained with the shell-effect dependent formula of Santhosh et al. (Santhosh and Nithya, 2016). For a theoretical comparison, the alpha decay half-lives are also computed with the Coulomb and proximity potential model (CPPM), Viola–Seaborg–Sobiczewski semi-empirical relation (VSS), Universal curve of Poenaru et al. (UNIV), the analytical formula of Royer, and the Universal decay law of Qi et al. (UDL). The predicted decay modes and half-lives were compared with the available experimental results. The proton and neutron separation energies are calculated to identify those nuclei, which decay through proton and neutron emission. From the entire study of odd Z superheavy elements, it is seen that among 1051 nuclei, 233 nuclei exhibit proton emission and 18 nuclei exhibit neutron emission. 56 nuclei are stable against alpha decay with negative Q value for the decay. 92 nuclei show alpha decay followed by spontaneous fission and 9 nuclei show alpha decay followed by proton emission. 39 nuclei decay through full alpha chain and 595 nuclei decay through spontaneous fission. We hope that the study will be very useful for the future experimental investigations in this field.



中文翻译:

对奇数衰减模式的预测 ž 范围内的超重同位素 105ž135

1051奇数的衰减模式 ž 105范围内的超重核 ž通过比较α衰变半衰期和自发裂变半衰期,研究了他们的子核和135。使用Santhosh等人提出的库仑和变形核邻近电势模型(CPPMDN)计算α衰变半衰期。(2011年)和自发裂变半衰期是由Santhosh等人的壳效应相关公式得出的。(Santhosh和Nithya,2016年)。为了进行理论比较,还使用库仑和邻近电势模型(CPPM),Viola–Seaborg–Sobiczewski半经验关系(VSS),Poenaru等人的通用曲线计算了α衰变半衰期。(UNIV),罗耶(Royer)的解析公式以及齐(Qi)等人的普遍衰减定律。(UDL)。将预测的衰减模式和半衰期与可用的实验结果进行了比较。计算质子和中子的分离能以识别那些通过质子和中子的发射而衰减的核。从整个奇研究ž在超重元素中,可以看出在1051个原子核中,有233个原子核表现出质子发射,而18个原子核表现出中子发射。56个核对负衰变稳定衰减的值。92个核显示出α衰变,然后发生自发裂变,而9个核显示出α衰变,然后发生质子发射。39个核通过完整的α链衰变,而595个核通过自发裂变衰变。我们希望这项研究对于该领域的未来实验研究将非常有用。

更新日期:2018-01-09
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