Calculation of cobalt and gold dosimetry cross sections from 1 to 50 MeV

Conference · Sat Dec 31 04:00:00 EST 1994

OSTI ID:55636

Iwasaki, Shin ^[1]; Odano, Naoteru ^[2]

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1. Tohoku Univ., Sendai (Japan). Dept. of Nuclear Engineering
2. Ministry of Transport, Ibaraki (Japan). Ship Research Inst.

Dosimetry cross sections for cobalt and gold are evaluated by the theoretical model based method to 50 MeV for the application to accelerator-based high energy neutron fields. The authors employed a model code system, SINCROS-II whose main part is a modified version of GNASH. Appropriate model parameters were selected or determined by fitting the cross sections to the available data mainly below 20 MeV. The calculations were extended to 50 MeV using these parameters. For the cobalt, the activation dosimetry reactions (n, 2n), (n, 3n), (n, 4n), (n,p), (n,{alpha}) and (n,{alpha}2n), and {alpha}-production reaction (n, He) and for the gold, (n, 2n), (n, 3n), (n, 4n) and (n,p), (n,{alpha}) = (n, He) cross sections were calculated. Consistency of these calculated cross sections is discussed by comparing with a few available experimental data above 20 MeV. Particular emphasis is placed on the consistency of the cobalt cross sections. The reaction {sup 59}Co(n, {alpha}2n) can be a new promising dosimetry one between 30 and 50 MeV.

• OSTI ID: 55636
• Report Number(s): CONF-930809--; ISBN 0-8031-1899-6
• Country of Publication: United States
• Language: English

Related Subjects

07 ISOTOPE AND RADIATION SOURCES
ACCELERATORS
COBALT 59 TARGET
CROSS SECTIONS
GOLD 197 TARGET
NEUTRON DOSIMETRY
NEUTRON REACTIONS
NEUTRON SOURCES
S CODES