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arXiv · 0710.3694

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

V. A. Vesna·Yu. M. Gledenov·V. V. Nesvizhevsky·A. K. Petoukhov·P. V. Sedyshev·T. Soldner·O. Zimmer·E. V. Shulgina
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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).

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V. A. Vesna, Yu. M. Gledenov, V. V. Nesvizhevsky, A. K. Petoukhov, P. V. Sedyshev, T. Soldner, O. Zimmer, E. V. Shulgina. 2007-10-19. Measurement of the parity-violating triton emission asymmetry in the reaction 6Li(n,alfa)3H with polarised cold neutrons. https://doi.org/10.1103/physrevc.77.035501

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