Measurement of the $α$ -Particle Spectrum Resulting from $π^{-}$ Capture in ${}^{12}C$

7 July 1975

journal article
research article
Published by American Physical Society (APS) in Physical Review Letters

Vol. 35 (1) , 13-15
https://doi.org/10.1103/physrevlett.35.13

Abstract

We have detected and identified charged particles with an energy of more than 0.5 MeV that were emitted by a carbon target following the absorption of stopped negative pions. Particles of mass 1, 2, 3, 4, 6, and 7 were found. The energy spectrum of the

α

particles was measured from 0.5 to 30 MeV. The rate for the emission of

α' s

integrated over all energies above 0.5 MeV was found to be 1.00 ± 0.07

α / pion

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Measurement of theα-Particle Spectrum Resulting fromπ−Capture inC12

Abstract

Measurement of the $α$ -Particle Spectrum Resulting from $π^{-}$ Capture in ${}^{12}C$