- snd2019@cabas.kyushu-u.ac.jp
Contact 連絡先
Contribution Poster
Fission study using four-dimensional Langevin model - Nuclear shape of fission fragments
Speakers
- Xuan ZHANG
Primary authors
- Xuan ZHANG (Tokyo Tech)
Co-authors
- Dr. Chikako ISHIZUKA (Tokyo Tech)
- Dr. Satoshi CHIBA (Tokyo Tech)
- Dr. Fedir A. IVANYUK (Kiev Institute of Nuclear Research)
Abstract
The precise data on prompt neutron multiplicity and prompt neutron spectrum of nuclear fission are necessary for nuclear reactor designs. We plan to calculate these data by simulation based on 4D Langevin Model. The excitation energy of each fission fragment at scission directly determines the prompt neutron multiplicity. Deformation energy should be the main term of excitation energy. In this study, we make it posible to precisely calculate the deformations, Quadrupole Moment ($Q_{20}$) and Octupole Moment ($Q_{30}$), of each fission fragment at scission by using 4D Langevin Model. After systematic survey of Actinides, we find that the deformations of light fragments are larger than heavy fragments. Also, the mass number dependence of deformations of fission fragments shows a sawtooth structure which is similar to prompt neutron multiplicity.