Abstract
The energy spectra of recoil lithium ions in coincidence with beta particles of selected energy have been measured for the beta decay of . 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 . The ratio of the tensor to axial vector coupling constants calculated from this measurement is . A new measurement of the 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