/ Experiment-Nucl arXiv:0710.3694


Measurement of the parity-violating triton emission asymmetry in the reaction Li-6 (n, alpha) H-3 with polarized cold neutrons


Vesna, V.A. (St. Petersburg, INP) ; Gledenov, Yu.M. (Munich, Tech. U.) ; Nesvizhevsky, V.V. (Munich, Tech. U.) ; Petoukhov, A.K. (Munich, Tech. U.) ; Sedyshev, P.V. (Munich, Tech. U.) ; Soldner, T. (Munich, Tech. U.) ; Zimmer, O. (Munich, Tech. U.) ; Shulgina, E.V. (St. Petersburg, INP)

Published in: Phys.Rev.
Year: 2008
Vol.: C77
Page No: 035501
Pages: 13

Abstract: We describe measurements of the parity-violating (P-odd) triton emission asymmetry coefficient in the 6Li(n,alfa)3H reaction with polarised cold neutrons. Experiments were carried out at the Petersburg Nuclear Physics Institute (Gatchina, Russia) and at the Institut Laue-Langevin (Grenoble, France). We employed an ionisation chamber in a configuration allowing us to suppress the left-right asymmetry well below 10^(-8). A test for a false asymmetry due to eventual target impurities ('zero test') resulted in the value (0.0+-0.5)x10^(-8). As final result we obtained P-odd effect (-8.6+-2.0)x10^(-8).

Web-Page: http://link.aps.org/abstract/PRC/V77/E035501

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