Elsevier

Nuclear Physics A

Volume 130, Issue 3, 16 June 1969, Pages 609-623
Nuclear Physics A

Spin-spin effect in the 165Ho total neutron cross section at energies of 0.4 and 1.0 MeV

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Abstract

Measurements of the spin-spin effect, σss in the total cross section for polarized neutrons on polarized 165Ho are reported at neutron energies of 0.4 and 1.0 MeV. The absence of an observable effect at 1.0 MeV is in contradiction with a recently reported experimental result. The results of an improved theoretical calculation of σss for neutron energies below 8 MeV are presented and used with the new experimental data to obtain the new limit ‖Vss‖ < 300 keV for the strength of the spin-spin potential.

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Work supported in part by the National Science Foundation, the U.S. Office of Naval Research (Nonr 225(67)) and Lockheed Independent Research Funds. HEPL-594.

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