Electron spin resonance of X-ray irradiated single crystals of potassium hydrogen malonate

Abstract

The electron spin resonance of x-rayed single crystals of potassium hydrogen malonate has been examined in detail. The results enable experimental tests to be made of the theory of second order, or forbidden lines arising from the simultaneous transitions between nuclear spin states (i.e. ΔM _I≠0) during an electron spin transition.