Abstract
The absolute cross section for the reaction has been measured in the diffracted proton beam of the Fermi National Accelerator Laboratory at an energy of 300 GeV. Proton intensities were measured with a scintillation counter telescope, and the 20.4-min activity induced in 3.2-mm thick plastic scintillator targets was determined both by internal scintillation () counting and by annihilation radiation counting with a NaI well crystal. A correction for the formation of by secondary particles was determined by measuring the activity in individual targets in a stack. The corrected value for the cross section at 300 GeV is 24.6 ± 1.6 mb.
NUCLEAR REACTIONS , GeV; measured absolute cross section.
- Received 15 September 1975
DOI:https://doi.org/10.1103/PhysRevC.13.253
©1976 American Physical Society