超重核294118和291116及其α衰变链上各核素半衰期的研究

运用推广的液滴模型（GLDM）确定了超重核294118和291116及其α衰变链上各核素的衰变势垒， 采用量子力学中的WKB方法计算α衰变中的势垒穿透几率， 对该链上各原子核的α衰变半衰期进行了研究。 此外， 还利用Royer公式对该链上各原子核的α衰变半衰期进行了计算。 结果表明， GLDM 考虑亲和能与Royer公式给出的α衰变半衰期与超重核区的实验值符合很好， 验证了GLDM和Royer公式在超重核区的适用性，可以用来预测超重核的半衰期。 最后， 预言了Z=118 和116 同位素链上各核素的半衰期， 结果表明， 在Z=118和116中存在α衰变长寿命同位素， 这需要实验上的检验。The α decay potential barrier of the newly synthesized superheavy nuclei starting from 294118 and 291116 have been determined and their half lives have been studied with the Generalized Liquid Drop Model(GLDM) connected with WKB approximation and Royer’s formulae．The α decay half lives of the nuclei belonging to the superheavy nuclei starting from 294118 and 291116 have been calculated．The calculated results are in agreement with the experimental data， which show that the α decay half lives of superheavy nuclei with the GLDM and Royer’s formulae can be applied in the studying on superheavy nuclei successfully．Finally， the half lives of Z=118 and 116 isotopes have been predicted， and the results suggest there may be some long lived superheavy nuclei for α decay in those isotopes.