Single-crystal electron spin resonance studies on radiation-produced species in ice Ih. Part 2.—The HO2 radicals
Abstract
X-Band e.s.r. spectra have been recorded at 77 K for single crystals of hexagonal H2O and D2O ices irradiated at 77 K and annealed at 150 K. The g and A tensors as well as the direction cosines have been determined for HO2 and DO2 radicals formed upon annealing from OH and OD radicals, respectively. It is possible to distinguish three sets of HO2 and DO2 radicals derivable directly from three sets of OH and OD radicals trapped in ice Ih.