Published April 1976 | Version v1
Journal article

Double positron-electron pair production by 6.6-MeV gamma rays

  • 1. Department of Physics, McMaster University, Hamilton, Ontario, Canada

Description

Double positron-electron pair production by 6.6-MeV γ rays was investigated via measurement of fourfold coincidence rates of annihilation quanta in targets of beryllium, boron, carbon, aluminum, sulphur, copper filings, and solid copper. Following an accounting for the interfering bremsstrahlung-cascade and direct-cascade effects a measure of the cross section for the process, relative to that for single pair production, was obtained as sigma/sub pi//sub pi//sigma/sub pi/ = (1.82 +- 0.58) x 10-5

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Publishing Information

Journal Title
Physical Review C
Journal Volume
13
Journal Issue
4
Series
Phys. Rev., C.
Journal Page Range
1552-1565
ISSN
0556-2813

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