Neutron Filters for Producing Monoenergetic Neutron BEAMS

摘要

Neutron transmission measurements have been made on high-purity, highly-enriched samples of exp 58 Ni (99.9%), exp 60 Ni (99.7%), exp 64 Zn (97.9%) and exp 184 W (94.5%) to measure their neutron windows and to assess their potential usefulness for producing monoenergetic beams of intermediate energies from a reactor. Transmission measurements on the Los Alamos Sc filter (44.26 cm Sc and 1.0 cm Ti) have been made to determine the characteristics of the transmitted neutron beam and to measure the total cross section of Sc at the 2.0 keV minimum. When corrected for the Ti and impurities, a value of 0.35 +- 0.03 b was obtained for this minimum. (ERA citation 07:062344)