Cross Sections for n+89Y for En< 20 MeV

Garrett, P E ; Ormand, W E ; Younes, W ; Becker, J A ; Bernstein, L A ; Nelson, R O ; Devlin, M ; Fotiades, N

Lawrence Livermore National Laboratory

关键词: Spectrometers;    Fast Neutrons;    38;    99;    Cross Sections;   

DOI  :  10.2172/15004538
RP-ID  :  UCRL-ID-153190
RP-ID  :  W-7405-ENG-48
RP-ID  :  15004538

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来源: UNT Digital Library

【 摘 要 】

Nuclear data collected in an experiment performed at LANSCE/WNR with the GEANIE spectrometer to measure the cross sections for n + {sup 89}Y for E{sub n} < 20 MeV are reported. The estimated (n,2n) cross sections to the ground and isomeric states of {sup 88}Y differ significantly from those listed in the RADCHEM data base. Folded with a fast neutron spectrum, these results lead to integral differences of +15%, +2%, and -70% vs. the RADCHEM evaluation.