【摘要】 本文将裂变过程看成为一多维的布朗运动,求得普朗克-福克方程适合于这一核过程的稳定解,并计算了单位时间内的裂变几率,将计算结果与玻尔-惠勒理论作了比较。对²³⁶U裂变所作的数值计算表明:此模型主要特点在于考虑了粘滞性对裂变几率的影响,据现有对裂变粘滞性的估计,这种影响将使裂变几率减小20％-40％。更多还原

【Abstract】 Fission process is considered as a multidimensional Brownian motion. The Planck-Fokker equation is solved and the fission probability in the steady state approximationis calculated. The results is compared with the Bohr-Wheeler theory. Numerical cal-culations are performed for the fission of U and the results are discussed.更多还原