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Title: Prompt fission neutron and gamma ray properties as a function of incident neutron energy

Journal Article · · EPJ Web of Conferences

The CGMF code provides a complete description of the properties of the prompt neutrons and γ rays, emitted before beta decays. It is based on a Monte Carlo implementation of the Hauser-Feshbach statistical model, which provides an accurate phenomenological description of the de-excitation of the fission fragments toward stable configurations via neutron and γ-ray emissions. This approach allows a detailed description of a large number of observables, such as multiplicity probabilities and correlations between the emitted particles. In this contribution, we briefly review the approach and present selected examples of neutron and γ-ray observables for neutron incident energies from thermal to 20 MeV, and compare against available data for 235U(n,f) reaction.

Research Organization:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE NA Office of Nonproliferation and Verification Research and Development (NA-22)
Grant/Contract Number:
AC52-06NA25396
OSTI ID:
1459848
Report Number(s):
LA-UR-16-26906; TRN: US1901818
Journal Information:
EPJ Web of Conferences, Vol. 146; Conference: International Conference on Nuclear Data for Science and Technology , Bruges (Belgium), 11 Sep 2016; ISSN 2100-014X (Electronic)
Publisher:
EDP SciencesCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 2 works
Citation information provided by
Web of Science

References (12)

Event-by-event evaluation of the prompt fission neutron spectrum from 239 Pu ( n , f ) journal February 2012
Monte Carlo Hauser-Feshbach predictions of prompt fission γ rays: Application to n th + 235 U, n th + 239 Pu, and 252 Cf (sf) journal January 2013
Properties of prompt-fission γ rays journal August 2014
RIPL – Reference Input Parameter Library for Calculation of Nuclear Reactions and Nuclear Data Evaluations journal December 2009
Distributions of Fission Neutron Numbers journal November 1957
General Description of Fission Observables: GEF Model Code journal January 2016
The Inelastic Scattering of Neutrons journal July 1952
Nuclear scission journal December 1990
Neutron-induced fission: properties of prompt neutron and γ rays as a function of incident energy journal January 2016
Advanced Monte Carlo modeling of prompt fission neutrons for thermal and fast neutron-induced fission reactions on Pu 239 journal June 2011
Total prompt energy release in the neutron-induced fission of 235U, 238U, and 239Pu journal June 2006
Test of gamma-ray strength functions in nuclear reaction model calculations journal May 1990

Cited By (1)

Prompt neutron multiplicity distributions inferred from γ -ray and fission fragment energy measurements journal November 2019

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