Orateur
Description
Prompt γ-rays from fission fragments have information on the mechanism of the spins of a fragment, and is important to investigate the mechanism of spin population in fission. We have measured the γ-ray spectrum in 235U(nth,f) using thermal neutron beam supplied from the High-Flux Reactor of ILL, Grenoble, France. By significantly improving the detection efficiency and gaining accumulated events with a factor ~105 in comparison to available low-energy neutron-induced data, the γ-ray spectrum up to 20 MeV was measured for the first time. The result shows a hump structure at 15 MeV. In comparison to a statistical model calculation, nuclides as a potential source of such high-energy γ-rays will be discussed.
Reference
[1] H. Makii et al., Phys. Rev. C 100, 044610 (2019).
