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Sherwood, Jesse E.; Ovenshine, S. J.

doi:10.1103/physrev.114.858

Cited by 9 publications

(1 citation statement)

References 6 publications

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“…One would therefore expect that experimental data for the scattering of neutrons by He 3 should make a distinction between the symmetrical and Serber type exchange forces. While experimental data for the elastic scattering of neutrons by H 3 have been available at 14 Mev, 4 the measurements were in the angular interval between 67° and 180° where the differential cross sections at this energy appear insensitive to the type of force.…”

Section: Introductionmentioning

confidence: 99%

Interaction of Neutrons withHe3

Sayres

Jones

1961

Phys. Rev.

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Spectra of the w+He 3 reactions were obtained for monoenergetic neutron fluxes of 0. 95, 2.67, 5.00, 8.07, and 17.5 Mev using a He 3 -filled proportional counter. Analysis of these spectra yielded the ratios to the total cross section of the total elastic, the He 3 (w,^)H 3 , and the He 3 (w,d)D reaction cross sections. Absolute cross sections were obtained by normalization to the known total cross section. Differential elastic-scattering cross sections for neutrons on He 3 were obtained through the relationship between the scattering angle of the neutron and the observed energy of the He 3 recoil in the counter filling. These angular distributions are compared with the theoretical angular distributions as calculated by Bransden, Robertson, and Swan. The present experiment was intended to discriminate between their assumed two special cases for the potential interaction, the symmetrical exchange force and the Serber exchange force. The experimental results favor the Serber exchange force. This experiment also was intended to make possible the analysis of more complex neutron spectra by providing knowledge of w+He 3 reaction cross sections and the spectra obtained when only monoenergetic neutrons are present. A comparison is made of the results of this experiment with cross sections calculated from inverse reactions and direct measurements of other investigators, where such data are available.

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Section: Introductionmentioning

confidence: 99%