Determination of the Electron-Antineutrino Angular Correlation Coefficient a(0) in Unpolarized Neutron β-Decay

The coefficient a(0) has been derived from a measurement of the integral spectrum of recoil protons stored in a quasi-Penning trap with inhomogeneous magnetic field and adiabatic focusing onto an electro-static mirror of potential variable in 10 V steps between 0 V and 850 V. Correction for incomple...

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Autor principal: Byrne, J.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: [Gaithersburg, MD] : U.S. Dept. of Commerce, National Institute of Standards and Technology 2005
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4852819/
https://www.ncbi.nlm.nih.gov/pubmed/27308156
http://dx.doi.org/10.6028/jres.110.059
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author Byrne, J.
author_facet Byrne, J.
author_sort Byrne, J.
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description The coefficient a(0) has been derived from a measurement of the integral spectrum of recoil protons stored in a quasi-Penning trap with inhomogeneous magnetic field and adiabatic focusing onto an electro-static mirror of potential variable in 10 V steps between 0 V and 850 V. Correction for incomplete transfer of energy from transverse to longitudinal degrees of freedom, and the violation of the adiabatic conditions on reflection at the mirror, is carried out by alternately measuring the spectrum at trapping times of 1 ms and 2 ms. The results a(0) = −0.1054 ± 0.0055 and |λ | = 1.271 ± 0.018 are comparable in precision with existing measurements of a(0).
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spelling pubmed-48528192016-06-15 Determination of the Electron-Antineutrino Angular Correlation Coefficient a(0) in Unpolarized Neutron β-Decay Byrne, J. J Res Natl Inst Stand Technol Article The coefficient a(0) has been derived from a measurement of the integral spectrum of recoil protons stored in a quasi-Penning trap with inhomogeneous magnetic field and adiabatic focusing onto an electro-static mirror of potential variable in 10 V steps between 0 V and 850 V. Correction for incomplete transfer of energy from transverse to longitudinal degrees of freedom, and the violation of the adiabatic conditions on reflection at the mirror, is carried out by alternately measuring the spectrum at trapping times of 1 ms and 2 ms. The results a(0) = −0.1054 ± 0.0055 and |λ | = 1.271 ± 0.018 are comparable in precision with existing measurements of a(0). [Gaithersburg, MD] : U.S. Dept. of Commerce, National Institute of Standards and Technology 2005 2005-08-01 /pmc/articles/PMC4852819/ /pubmed/27308156 http://dx.doi.org/10.6028/jres.110.059 Text en https://creativecommons.org/publicdomain/zero/1.0/ The Journal of Research of the National Institute of Standards and Technology is a publication of the U.S. Government. The papers are in the public domain and are not subject to copyright in the United States. Articles from J Res may contain photographs or illustrations copyrighted by other commercial organizations or individuals that may not be used without obtaining prior approval from the holder of the copyright.
spellingShingle Article
Byrne, J.
Determination of the Electron-Antineutrino Angular Correlation Coefficient a(0) in Unpolarized Neutron β-Decay
title Determination of the Electron-Antineutrino Angular Correlation Coefficient a(0) in Unpolarized Neutron β-Decay
title_full Determination of the Electron-Antineutrino Angular Correlation Coefficient a(0) in Unpolarized Neutron β-Decay
title_fullStr Determination of the Electron-Antineutrino Angular Correlation Coefficient a(0) in Unpolarized Neutron β-Decay
title_full_unstemmed Determination of the Electron-Antineutrino Angular Correlation Coefficient a(0) in Unpolarized Neutron β-Decay
title_short Determination of the Electron-Antineutrino Angular Correlation Coefficient a(0) in Unpolarized Neutron β-Decay
title_sort determination of the electron-antineutrino angular correlation coefficient a(0) in unpolarized neutron β-decay
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4852819/
https://www.ncbi.nlm.nih.gov/pubmed/27308156
http://dx.doi.org/10.6028/jres.110.059
work_keys_str_mv AT byrnej determinationoftheelectronantineutrinoangularcorrelationcoefficienta0inunpolarizedneutronbdecay

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