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Scattering of Polarized 3 MeV Neutrons from 3He

Author: C. E. Hollandsworth
Publisher:
ISBN:
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Languages : en
Pages : 23

Book Description
Partially polarized 3 MeV neutrons have been scattered from 3He contained in a high-pressure gaseous scintillation cell. The resulting asymmetry in the elastic scattering was determined for seven scattering angles from 40 degrees to 120 degrees (lab). Time-of-flight techniques and neutron-gamma ray discrimination in the side detectors were used for background reduction. The measured asymmetry is small for angles less than 60 degrees (lab) and reaches a maximum value at approximately 110 degrees (c.m.). The maximum asymmetry determined from the present experiment corresponds to a polarization of + 0.50. The differential polarization can be fitted within experimental uncertainties by assuming that D-wave effects are negligible. The principal features of the data are qualitatively reproduced by Dodder's reaction-matrix calculations which use the Werntz-Meyerhof level parameters for 4He. (Author).

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