通过对重离子熔合反应的系统研究,分别建立了计算俘获截面、复合核存活几率以及复合核形成几率的方法,并给出了理论计算值的系统误差.对于“超重稳定岛”附近的超重核,除了壳修正,准裂变势垒高度也会影响超重核的形成几率.基于Skyrme能量密度泛函得到的准裂变势垒高度,提出了描述复合核形成几率的解析表达式.对于“超重稳定岛”附近的超重核,除了壳修正,准裂变势垒高度也会影响超重核的形成几率.与此同时,基于该方法预言了合成新的超重元素Z=119和120的几个熔合体系的蒸发剩余截面.对于熔合反应50Ti+249Bk,计算出来的最佳蒸发剩余截面大约为35 fb.
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