Electron-Neutrino Angular Correlation in the Decay of He6

Joseph B. Vise and Brice M. Rustad
Phys. Rev. 132, 2573 – Published 15 December 1963
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Abstract

The energy spectra of recoil lithium ions in coincidence with beta particles of selected energy have been measured for the beta decay of He6. The beta-particle energy was determined with a well-type beta scintillation detector; and the energy and charge of the recoil ions were measured with an electrostatic spectrometer and time-of-flight analyzer. The electron-neutrino angular-correlation coefficient determined from the observed energy distributions of recoil ions is λ=0.319±0.028. The ratio of the tensor to axial vector coupling constants calculated from this measurement is (|CT|2+|CT|2)(|CA|2+|CA|2)=0.022±0.044. A new measurement of the He6 beta spectrum was made with a thin-lens magnetic spectrometer, and the maximum energy is 3.508±0.015 MeV.

  • Received 18 July 1963

DOI:https://doi.org/10.1103/PhysRev.132.2573

©1963 American Physical Society

Authors & Affiliations

Joseph B. Vise and Brice M. Rustad

  • Columbia University, New York, New York and Brookhaven National Laboratory, Upton, New York

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Vol. 132, Iss. 6 — December 1963

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