A resonance was observed in the ionic conductivity as a function of the bombarding ion mass number in ion-bombarded crystalline quartz. The resonance was observed at the optimum ratio of the energy losses for nuclear and electron stopping of the impinging ions which interacted with crystalline quartz when the ion mass numbers ranged from 35 to 45amu.

Resonance in the Efficiency of Conduction-State Formation in Ion-Bombarded Crystalline Quartz. V.F.Pichugin, T.S.Frangulyan: Technical Physics Letters, 2000, 26[10], 861-3