Detection of He Ions in the Interaction of 70-MeV $π^{-}$ with Aluminum

Publisher Website

24 February 1975

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

Vol. 34 (8) , 485-487
https://doi.org/10.1103/physrevlett.34.485

Abstract

We detected and identified He ions, predominantly

α

particles, in the reaction

π^{-} + {}^{27}{Al} \to He + X

at

E_{π} = 70

MeV. The differential cross section at 90° is 6±2 mb/sr in the energy range

E_{He} = 5.5 - 30

MeV. The He yield decreases from 7 to 25 MeV, where it approaches zero.

Keywords

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