In the present work,we predict the α decay half-lives of unknown even-even nuclei 296-308120 within the two-potential approach,whose α decay energy Qa is calculated using WS3+mass model.To reduce the deviations betw...In the present work,we predict the α decay half-lives of unknown even-even nuclei 296-308120 within the two-potential approach,whose α decay energy Qa is calculated using WS3+mass model.To reduce the deviations between the predictions and experimental data due to nuclear shell effect,the analytic formula of α decay hindrance factor is introduced to the two-potential approach,whose parameters had been extracted from even-even nuclei in the region of 82 <Z <126 and 152 <N ≤184 in our previous work [Deng et al.,Chin.Phys.C 42(2018) 044102].In addition,for comparing,we use a type of α decay general formula Universal Decay Law(UDL) and a semi-empirical formula in the superheavy nucleus(SEMFLS) to calculate the half-lives of even-even nuclei 296-308120.The results indicate that our predicted values and the calculated values of the above two empirical formulas are mutually confirmed.Meanwhile,we systematically study α decay chains of 296-308120 and predict the decay modes for superheavy nuclei to help to identify new superheavy isotopes.展开更多
基金Supported by National Natural Science Foundation of China under Grant Nos.11205083 and 11505100the construct program of the key discipline in Hunan province+7 种基金the Research Foundation of Education Bureau of Hunan ProvinceChina under Grant Nos.15A159 and18A237the Natural Science Foundation of Hunan ProvinceChina under Grant Nos.2015JJ3103,2015JJ2123the Innovation Group of Nuclear and Particle Physics in USCthe Shandong Province Natural Science Foundation,China under Grant No.ZR2015AQ007the National Innovation Training Foundation of China under Grant No.201910555161the Hunan Provincial Innovation Foundation for Postgraduate under Grant No.CX20190714
文摘In the present work,we predict the α decay half-lives of unknown even-even nuclei 296-308120 within the two-potential approach,whose α decay energy Qa is calculated using WS3+mass model.To reduce the deviations between the predictions and experimental data due to nuclear shell effect,the analytic formula of α decay hindrance factor is introduced to the two-potential approach,whose parameters had been extracted from even-even nuclei in the region of 82 <Z <126 and 152 <N ≤184 in our previous work [Deng et al.,Chin.Phys.C 42(2018) 044102].In addition,for comparing,we use a type of α decay general formula Universal Decay Law(UDL) and a semi-empirical formula in the superheavy nucleus(SEMFLS) to calculate the half-lives of even-even nuclei 296-308120.The results indicate that our predicted values and the calculated values of the above two empirical formulas are mutually confirmed.Meanwhile,we systematically study α decay chains of 296-308120 and predict the decay modes for superheavy nuclei to help to identify new superheavy isotopes.
