Total Cross Section of Helium for Fast Neutrons
- 1 May 1951
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 82 (3), 378-380
- https://doi.org/10.1103/physrev.82.378
Abstract
The total neutron cross section of helium has been determined at energies from 40 kev to 4.9 Mev by comparison of the transmission of neutrons through a helium-filled cylinder with the transmission through an identical empty cylinder. The observed cross section increases smoothly from 0.8 barn at 40 kev to 6.7 barns at 1.15 Mev, and then decreases smoothly to 2.3 barns at 4.9 Mev. No splitting of the peak at 1.15 Mev was observed.Keywords
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