【摘 要】
：
用推广的裂变扩散模型研究了裂变前壳效应对粒子发射的影响 .双幻核2 0 8Pb和13 2 Sn被用作例子来展示这个壳效应 .计算结果表明壳效应对这两个复合系统断前发射的粒子有影响
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用推广的裂变扩散模型研究了裂变前壳效应对粒子发射的影响 .双幻核2 0 8Pb和13 2 Sn被用作例子来展示这个壳效应 .计算结果表明壳效应对这两个复合系统断前发射的粒子有影响 .对中子 ,壳的影响非常明显 .我们发现壳对中子发射的影响随着裂变系统激发能的增加而逐渐变弱
The effect of the pre-fission shell effect on particle emission was studied using a generalized fission-diffusion model. Two phantom nuclei, 208Pb and 13 2 Sn, were used as an example to demonstrate the shell effect. The calculated results show that the shell effect on these two complex systems The particles emitted before are influential, and the effect on neutron and shell is obvious. We find that the influence of shell on neutron emission gradually weakens with the increase of excitation energy of fission system
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