基于推广的液滴模型(GLDM)理论框架,计算了292-310122同位素链的α衰变和自发裂变的半衰期.计算时的基本输入量为两子核的质量数和电荷数以及反应Q值.GLDM能很好地描述重核和超重核的α衰变和自发裂变过程.计算结果表明,A< 308时在同位素链上N=176~184的区域α衰变为主要衰变模式.A> 308时在同位素链上自发裂变为主要衰变模式.308122是α衰变和自发裂变的分界点,暗示着N=184为中子幻数.
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