Neutron Polarization in the d+T-->n+4He Reaction at 30° from 3 to 15 MeV

Details Neutron Polarization in the d+T-->n+4He Reaction at 30° from 3 to 15 MeV Neutron Polarization in the d+T-->n+4He Reaction at 30° from 3 to 15 MeV

Mar 1971

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1971phrvc...3.1031m&link_type=abstract

Physical Review C, vol. 3, Issue 3, pp. 1031-1042

Physics

16

Scientific paper

An experimental study has been made of neutron polarization from the T(d,n)4He reaction at 30° lab as a function of incident deuteron energy. A liquid-helium polarimeter was employed for this purpose with a 90° spin-precession solenoid. Measurements have been made in two ways, with greatest emphasis placed on the use of the backward reaction, D(t,n)4He, for a range of triton energies between 4.5 and 19.5 MeV. Equivalent c.m. conditions are obtained for Et=32Ed, with neutrons emerging in the vicinity of 135° lab. Under these conditions, the neutron energy is near 11 MeV over a wide range of triton energies, where the n-He analyzing power is constant and well known. Measurements were also made from the T(d,n)4He reaction directly at 30° for a range of deuteron energies between 5 and 15 MeV. The measured polarizations varied from 0.03 at 3-MeV to 0.69 at 13-MeV equivalent deuteron energy. Comparisons are made with prior data. The method also allows extraction of values of the n-He analyzing power for neutron energies between 21 and 29 MeV at 75 and 113° lab.

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