Trapped electrons in crystalline D2O ice at 4°K

Abstract
The ir absorption band and EPR spectrum of ΔHpp=1.3 G at g?2 observed in irradiated D2O crystalline ice at 4°K have been assigned to trapped electrons. The ir band and EPR spectrum decayed with τ1/2=35 min in pure D2O ice at 4°K. The trapped electrons were not observed in H2O ice at 4°K. Addition of 1.5% H2O in volume in D2O reduced the trapped electron yield to about 60% and shortened τ1/2. Effect of NH4F and AgNO3 doped in D2O ice has been examined. The trapped electrons were stable in 10M LiCl⋅H2O–D2O glass at 4°K. Stability of the trapped electrons in ice has been discussed.