Professor of Physics, College of Literature, Science and the Arts
Phone: (734) 936-1134
Professor Gidley’s research focuses on precision measurements of the singlet and triplet annihilation decay rates of the particle-antiparticle system called positronium as tests of quantum electrodynamics. Comparison with calculations of these decay rates comprises a unique test of quantum electrodynamics. He has searched for exotic positronium decay modes as tests of fundamental conservation laws and discrete symmetries. His positron studies of metal surfaces and thin films include surface defects, film growth, and the generation and polarimetry of spin polarized low energy positron beams to probe surface magnetism.