### RECOIL ENERGY SPECTRUM OF THE SODIUM IONS FOLLOWING THE /cap beta/$sup -$ DECAY OF Ne$sup 2$sup 3$RECOIL ENERGY SPECTRUM OF THE SODIUM IONS FOLLOWING THE /cap beta/$sup -$DECAY OF Ne$sup 2$sup 3$

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 Author Carlson, T. A. Source United States Department of Energy Office of Scientific and Technical Information Content type Text Language English
 Subject Keyword PHYSICS ♦ ANGULAR DISTRIBUTION ♦ BETA DECAY ♦ BETA PARTICLES ♦ DISTRIBUTION ♦ ELECTRONS ♦ ENERGY ♦ ENERGY LEVELS ♦ ERRORS ♦ INTERACTIONS ♦ IONS ♦ MEASURED VALUES ♦ NEON 23 ♦ NEUTRINOS ♦ RECOILS ♦ SODIUM ♦ SPECTRA ♦ V-A THEORY Abstract Following the beta decay of Ne/sup 23/, the sodium ions have a recoil energy distribution which is dependent on the nature of the decay. A precise measurement was made of the recoil spectrum from 100 to 500 ev. From these data the electron-neutrino angular correlation coefficient alpha was determined to be --0.33 plus or minus 0.03, in good agreement with V-A interaction. The quoted error includes an uncertainty of only 2% due solely to the recoil measurements. The principal uncertainty in alpha arises from the errors quoted by Penning andd Schmidt for their measurements of the BETA --ray intensities to the ground and first excited states. If it is assumed that V-A interaction is valid andd hence alpha = 1/3, the BETA /sup -/-ray intensities to the ground and first excited states of Na/sup 23/ may be calculated from the recoil data. Such calculations were made and the results are, respectively, (67 plus or minus 1)% and (32 plus or minus 1)%. From the end point of the recoil spectrum, the decay energy to the ground state was determined to be 4.383 plus or minus 0.008 Mev. (auth) ISSN 0031899X Educational Use Research Learning Resource Type Article Publisher Date 1963-12-01 Publisher Department Oak Ridge National Lab., Tenn. Journal Physical Review Volume Number 132 Organization Oak Ridge National Lab., Tenn.