Preprint / Nuclear Physics JINR-R3-2002-175

Measurement of the forward-backward asymmetry coefficient in the sup 3 sup 5 Cl(n,p) sup 3 sup 5 S reaction for resonance neutrons

Vesna, V A ; Gledenov, Yu M ; Okunev, I S ; Oprea, A ; Salatskii, V I ; Sedyshev, P V ; Szalanski, P

Pages: 15 p
Year: 2002

Abstract: The measurements of the P-even forward-backward correlation in the sup 3 sup 5 Cl(n,p) sup 3 sup 5 S reaction were carried out at resonance unpolarized neutrons of the IBR-30 pulsed facility. The alpha sub F sub B values have been determined for neutron energy regions at averaged values of 3.1, 195 and 398 eV: (5.3+-7.6)centre dot 10 sup - sup 3 , (1.68+-0.50)centre dot 10 sup - sup 1 , and -(7.4+-3.6)centre dot 10 sup - sup 3 , respectively. Involving results of the experiment at thermal polarized neutrons on measurement of the P-odd and the P-even left-right correlations in the given reaction, the weak matrix element has been estimated, and an analysis of the possible values of the neutron and proton amplitudes for channels with total momentum j=1/2 and 3/2 has been performed.

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