Integral Measurements to Test Neutron Scattering and Gamma-Ray Production Cross Sections for Be, C, N, H2O, and Fe.
Final rept. Aug 71-May 75,
INTELCOM RAD TECH SAN DIEGO CALIF
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Incident-neutron-energy-dependent measurements of scattered neutrons and secondary gamma rays for small samples of Be, C, N, H2O, and Fe have been performed at four scattering angles 30, 55, 90 and 125 degrees. The pulsed-white-neutron source, time-of-flight TOF method, and NE-213 detector with pulse-shape discrimination, three-parameter data acquisition with an online computer and spectrum unfolding were used to measure incident-neutron-energy-dependent, count rates and energy spectra of scattered neutrons E sub n 1 MeV and secondary gamma rays E sub gamma 1 MeV for incident neutron energies from 2 to 20 MeV. The measurements provide high sensitivity tests for integral and differential neutron scattering and gamma-ray production cross sections when compared with appropriate transport calculations. Differences between measurements and calculations should be interpretable in terms of specific cross-section deficiencies at well-defined incident-neutron energies from 2 to 20 MeV. The source spectrum of neutrons incident on the samples was measured by TOF using the NE-213 detector. Author
- Nuclear Physics and Elementary Particle Physics