Primary radiation products in cysteine hydrochloride

Abstract
ESR and ENDOR spectroscopy were used to identify three primary radicals in single crystals of cysteine hydrochloride x irradiated at 4.2 °K. The reduction product is an anion formed by addition of an electron to the carboxyl group. One oxidation product results from the loss of the sulfhydryl hydrogen atom. Another oxidation product is an electron vacancy localized mainly on atomic chlorine.