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/sup 127/I(n,2n)/sup 126/I reaction as a fast neutron flux monitor

Conference · · NBS Spec. Publ. (U.S.); (United States)
OSTI ID:6101605
The activation method was used to measure the production of 12.88 day /sup 126/I as a function of neutron energy. Monoenergetic neutrons were produced with a tandem Van de Graaff using the reaction D(d,n)/sup 3/He and T(d,n)/sup 4/He. Cross sections were measured from a threshold energy of 9.2 MeV up to 20 MeV relative to the known cross sections for the /sup 32/S(n,p) reaction. The study has shown that the /sup 127/I(n,2n) reaction has a flat response around 14 MeV and this factor combined with the suitable decay characteristics of /sup 126/I provides a reaction suitable as a standard for determining integrated fast-neutron fluxes of neutron generators and thermonuclear fusion machines.
Research Organization:
Chalk River Nuclear Laboratories, Ontario
OSTI ID:
6101605
Report Number(s):
CONF-791058-
Conference Information:
Journal Name: NBS Spec. Publ. (U.S.); (United States) Journal Volume: 594
Country of Publication:
United States
Language:
English

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