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Date of Award

8-1974

Degree Type

Thesis

Degree Name

Doctor of Philosophy (PhD)

Department

Physics

Supervisor

Dr. T. J. Kennett

Abstract

The task of detection and measurement of the instantaneous process of double positron-electron pair production was undertaken. Several targets of different atomic number were used, in conjunction with 6.6-MeV gamma rays, to isolate the process from the interfering two-pair processes known as the bremsstrahlung-cascade and the direct-cascade effects. A quantitatively significant value has been determined for the cross section for double pair production relative to that for single pair production.

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