Abstract:The total scattering cross section for neutrons incident on protons has been measured in a good-geometry transmission experiment. The scatterer was hydrogen gas contained in a pressure vessel one meter long, at a pressure of 4000 psi. The resulting cross section is o-*=0.4942±0.0025 barn at a laboratory neutron energy of 19.665±0.026 Mev. 3 The transmission cell was designed and tested in 1951 by Mills, Edeskuty, and Sesonsky of this Laboratory, at the request of J. H. Coon. A description of the cell appears i… Show more
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