Workshop on Fission Fragment Angular Momenta

Session

Gamma ray multiplicities and spectra

23 juin 2022, 08:30

25. Measurement of prompt fission gamma-ray spectrum of 235U(nth,f)

Katsuhisa Nishio (Advanced Science Research Center, JAEA, Tokai)

23/06/2022 08:30

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...

16. Correlations between fragment angular momentum and excitation energy

Nathan Ghia (University of Michigan), Stefano Marin (University of Michigan)

23/06/2022 11:10

We present recent experimental results that indicate the existence of significant correlations between the fragments’ angular momenta and excitation energies. Both the experiment we present are based on the Chi-Nu array at the Los Alamos Neutron Science Center but are independent observations of the spin-energy correlations in fission. We find evidence of event-by-event neutron-gamma...

24. Measurements of γ-ray multiplicity correlated with fission fragments mass and kinetic energy

Valentin Piau (CEA Cadarache)

23/06/2022 11:55

Alf Göök, Andreas Oberstedt, Stephan Oberstedt, Olivier Litaize, Abdelaziz Chebboubi
The nuclei generated at scission are left in highly excited states, and will dissipate their excitation energy and angular momentum through the emission of neutrons, photons and conversion electrons. In this context, the study of prompt γ-ray emission is an interesting tool to assess the angular momenta of...