Photodisintegration of Helium-3 at Energies between 200 and 600 MEV

Citation

McDonald, Kirk Thomas (1972) Photodisintegration of Helium-3 at Energies between 200 and 600 MEV. Dissertation (Ph.D.), California Institute of Technology. doi:10.7907/E7PT-0T58. https://resolver.caltech.edu/CaltechTHESIS:05092016-154916452

Abstract

We have measured differential cross-sections for the two-body photodisintegration of Helium-3, ɣ + He³ → p + d, between incident photon energies of 200 and 600 MeV, and for center of mass frame angles between 30° and 150°. Both final state particles were detected in arrays of wire spark chambers and scintillation counters; the high momentum particle was analyzed in a magnet spectrometer. The results are interpreted in terms of amplitudes to produce the ∆(1236) resonance in an intermediate state, as well as non-resonant amplitudes. This experiment, together with an (unfinished) experiment on the inverse reaction, p + d → He³ + ɣ, will provide a reciprocity test of time reversal invariance.

Thesis Files