A measurement of parity-violating gamma-ray asymmetries in polarized cold neutron capture on 35Cl, 113Cd, and 139La

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dc.creatorMitchell, G. S.
dc.creatorBlessinger, C. S.
dc.creatorBowman, J. D.
dc.creatorChupp, T. E.
dc.creatorCoulter, K. P.
dc.creatorGericke, M. T. W.
dc.creatorJones, G. L.
dc.creatorLeuschner, M. B.
dc.creatorNann, H.
dc.creatorPage, S. A.
dc.creatorPenttila, S. I.
dc.creatorSmith, T. B.
dc.creatorSnow, W. M.
dc.creatorWilburn, W. S.
dc.date2004-01-08
dc.date.accessioned2026-07-07T10:50:47Z
dc.date.available2026-07-07T10:50:47Z
dc.descriptionAn apparatus for measuring parity-violating asymmetries in gamma-ray emission following polarized cold neutron capture was constructed as a 1/10th scale test of the design for the forthcoming n+p->d+gamma experiment at LANSCE. The elements of the polarized neutron beam, including a polarized 3He neutron spin filter and a radio frequency neutron spin rotator, are described. Using CsI(Tl) detectors and photodiode current mode readout, measurements were made of asymmetries in gamma-ray emission following neutron capture on 35Cl, 113Cd, and 139La targets. Upper limits on the parity-allowed asymmetry $s_n \cdot (k_γ \times k_n)$ were set at the level of 7 x 10^-6 for all three targets. Parity-violating asymmetries $s_n \cdot k_γ$ were observed in 35Cl, A_gamma = (-29.1 +- 6.7) x 10^-6, and 139La, A_gamma = (-15.5 +- 7.1) x 10^-6, values consistent with previous measurements.
dc.description19 pages, 4 figures, submitted to Nucl. Instr. and Meth. A
dc.identifierhttps://arxiv.org/abs/nucl-ex/0401009
dc.identifierhttp://arxiv.org/abs/nucl-ex/0401009
dc.identifierNucl.Instrum.Meth.A521:468-479,2004
dc.identifierdoi:10.1016/j.nima.2003.11.192
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/184644
dc.subjectNuclear Experiment
dc.titleA measurement of parity-violating gamma-ray asymmetries in polarized cold neutron capture on 35Cl, 113Cd, and 139La
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