论文标题

时间依赖性发电机坐标方法裂变研究:质量参数

Time-dependent generator coordinate method study of fission: mass parameters

论文作者

Zhao, Jie, Nikšić, Tamara, Vretenar, Dario, Zhou, Shan-Gui

论文摘要

在诱导的裂变动力学的研究中采用了衍生成曲柄近似的集体质量张量(ATDHFB)方法。加上基于核能密度功能的变形受限的自洽的平均均值计算的集体潜力,质量张量指定了核波函数从平衡变形时的初始状态的时间演变,直至Scission to scission to Scission to Scission to Scission to to scission to to scission and for fission片段的形成。在说明性计算中,低能量诱导的$^{228} $ th,$^{230} $ th,$^{234} $ u,以及$^{240} $ pu,我们比较了非扰动和扰动的扰动和扰动的ATDHFB群众张力,并在轴向上进行了轴向及轴向量的均值,并与轴向级别的均值相比,产量。

Collective mass tensors derived in the cranking approximation to the adiabatic time-dependent Hartree-Fock-Bogoliubov (ATDHFB) method are employed in a study of induced fission dynamics. Together with a collective potential determined in deformation-constrained self-consistent mean-field calculations based on nuclear energy density functionals, the mass tensors specify the collective Hamiltonian that governs the time evolution of the nuclear wave function from an initial state at equilibrium deformation, up to scission and the formation of fission fragments. In an illustrative calculation of low-energy induced fission of $^{228}$Th, $^{230}$Th, $^{234}$U, and $^{240}$Pu, we compare the non-perturbative and perturbative cranking ATDHFB mass tensors in the plane of axially-symmetric quadrupole and octupole deformations, as well as the resulting charge yields.

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