Abstract
The absolute cross section for the reaction has been measured in an external beam of the Argonne zero gradient synchrotron at 8.5-GeV/c momentum (7.6-GeV protons). Proton fluxes were measured with a scintillation counter telescope, and the 20.4 min activity induced in -in.-thick plastic scintillators was determined both by internal scintillation counting and by -annihilation radiation counting with a NaI(T1) well crystal. A correction for the formation of by secondary particles was determined and a correction was made for the small contamination of the proton beam. The cross section at 7.6 GeV is 28.2 ± 0.6 mb.
- Received 16 June 1972
DOI:https://doi.org/10.1103/PhysRevC.6.1153
©1972 American Physical Society