A Dynamical study of fission process and estimation of prescission neutron multiplicity
A Dynamical study of fission process and estimation of prescission neutron multiplicity
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DOI：
10.1103/physrevc.57.2453
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发表时间：
1997-10
影响因子：
3.1
通讯作者：
A. Dhara;K. Krishan;C. Bhattacharya;Sailjananda Bhattacharya
中科院分区：
文献类型：
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作者：
A. Dhara;K. Krishan;C. Bhattacharya;Sailjananda Bhattacharya
本文通过求解Euler-Lagrange方程，研究了核裂变动力学问题。计算了裂变碎片的平均动能、裂变前中子的多重性和裂变前中子的平均能量，并与实验值进行了比较，两者符合得很好。一个单一的摩擦系数的值已被用来再现对称和非对称分裂的裂变系统在广泛的质量和激发能的实验数据。已经观察到，与基态到鞍区的摩擦相比，在鞍到断裂区中需要更强的摩擦。
The dynamics of fission has been studied by solving Euler-Lagrange equation with dissipation generated through one and two body nuclear friction. The average kinetic energies of the fission fragments, prescission neutron multiplicities and the mean energies of the prescission neutrons have been calculated and compared with experimental values and they agree quite well. A single value of friction coefficient has been used to reproduce the experimental data for both symmetric and asymmetric splitting of the fissioning systems over a wide range of masses and excitation energies. It has been observed that a stronger friction is required in the saddle to scission region as compared to that in the ground state to saddle region.