An optically polarised dense 3He target as a spin filter for slow-neutron beams

Autor: Kolachevsky, N.N., Prokof'ichev, Yu.V., Skoi, V.R., Sobelman, Igor I., Sorokin, V.N.
Zdroj: Quantum Electronics; January 30, 2003, Vol. 33 Issue: 1 p18-24, 7p
Abstrakt: The possibility of polarising 3He and preserving the polarisation in an external magnetic field of 0.05 Oe is demonstrated experimentally. A neutron filter with an extremely weak guiding field is fabricated for obtaining polarised neutron beams. The degree of polarisation equal to 25% was obtained for 0.025-eV neutrons. Some fields of application of other polarised noble gases are considered. The cross section for cross-relaxation of nuclear polarisation in the 129Xe — 131Xe mixture is estimated.
Databáze: Supplemental Index