DNP Seminar
05-22-2024 11:00 Conference hall (bldg. 42, 3rd floor)
AUTHORS: M. Sepiani, Faculty of Physics, University of Isfahan, Isfahan, Iran
M.N. Nasrabadi, Faculty of Physics, University of Isfahan, Isfahan, Iran; Frank Laboratory of Neutron Physics, JINR, Dubna, Russia)
The photofission process, while paramount for various nuclear applications, presents a multifaceted and complicated phenomenon that demands exact investigation. Photofission, characterized by the excitation and subsequent fission of a nucleus induced by photon absorption, holds critical importance in fields such as nuclear energy production, nuclear medicine, and fundamental nuclear physics research. However, its complexity arises from the intricate interplay of various factors, including nuclear structure, excitation mechanisms, and reaction dynamics. By delving into the theoretical underpinnings of photofission, we endeavor to unravel the complexities inherent in the process and shed light on the underlying mechanisms governing 237Np photofission. In this study, it is shown that the effects of nuclear structure such as the nuclear level density (NLD) at saddle points and fission barrier parameters play pivotal roles in determining the probability and characteristics of photofission reactions. By employing advanced theoretical models and nuclear reaction codes, we delve into the intricate interplay between these key factors and the photofission cross section of 237Np. Theoretical calculations will be validated versus experimental data, facilitating a deeper understanding of the underlying mechanisms governing 237Np photofission dynamics.
Fig. 1. Comparison of photofission cross section of 237Np calculated through different NLD models with experimental data
Fig. 2. Comparison of calculated cross section by combination of the best components for 237Np with experimental photofission cross section 
