Bismuth-fission detectors for high energy nucleons: II. Proton and neutron responses

摘要

A critical requirement for the Bi-209-fission detector is the knowledge of its response as a function of energy for both neutrons and protons. For this reason, stacks of 209Bi-fission detectors have been exposed to proton beams of 100 and 150 MeV at the Paul Sherrer Institute. Similar stacks have been exposed to neutron beams of 100 and 160 MeV at the Svedberg Laboratory from Uppsala University. The calibrations data with neutrons have been compared with those obtained with protons of the same energies. This comparison has proved that the response of Bi-209-fission detector for neutrons is two to three times smaller than that for protons at least in the range of nucleon energy up to 150 MeV. [References: 17]