Energy measurement of prompt fission neutrons in 239Pu(n,f) for incident neutron energies from 1 to 200 MeV

Conference · Fri Jan 01 04:00:00 EST 2010

OSTI ID:1024863

Haight, Robert C ^[1]; Devlin, Matthew J ^[1]; Nelson, Ronald O ^[1]; O' Donnell, John M ^[1]; Chatillon, Audrey ^[2]; Granier, Thierry ^[2]; Taieb, Julien ^[2]; Belier, Gilbert ^[2]; Laurent, Benoit ^[2]; Noda, Shusaku ^[3]

---

1. Los Alamos National Laboratory
2. CEA, FRANCE
3. KYUSHU UNIV, JAPAN

An experimental campaign was started in 2002 in the framework of a collaboration belween CEA-DAM and the Los Alamos National Laboratory to measure the prompt fission neutron spectra (PFNS) for incident neutron energies from 1 to 200 MeV with consistent error uncertainties over the whole energy range. The prompt neutron spectra in {sup 235,238}U(n,f) and {sup 237}Np(n,f) have been already studied successfully. A first attempt to characterize the prompt neutrons emitted during the fission of the {sup 239}Pu was done in 2007. This contribution will focus on the results obtained during the final experiment to measure the PFNS in {sup 239}Pu(n,f) performed in 2008. Prompt fission neutron spectra in the neutron-induced fission of {sup 239}Pu have been measured for incident neutron energies from 1 to 200 MeV at the Los Alamos Neutron Science Center. Mean energies obtained from the spectra are discussed and compared to theoretical model calculation.

• Research Organization: Los Alamos National Laboratory (LANL)
• Sponsoring Organization: DOE
• DOE Contract Number: AC52-06NA25396
• OSTI ID: 1024863
• Report Number(s): LA-UR-10-04914; LA-UR-10-4914
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ENERGY RANGE
FISSION
FISSION NEUTRONS
LANL
NEUTRONS
PROMPT NEUTRONS
SPECTRA