RADIATION-INDUCED RADICALS IN WATER, DEUTERIUM OXIDE AND AQUEOUS SOLUTIONS OF GLYCINE AT LOW TEMPERATURES
The electron spin resonance centers induced in irradiated water and deuterium oxide were examined, and the stabilization of OH and OD radicals at liquid nitrogen temperature was confirmed. Samples of water, deuterium oxide, and a 1 M glycine solution were frozen and exposed to 220-kv x rays at 77 deg K. The electron spin resonance of irradiated water shows a doublet with a broad superimposed resonance. In deuterium oxide a triplet is observed instead of the doublet, and the broad resonance is also somewhat altered. The doublet has a splitting of 4l.5 gauss compared with the triplet splitting of 6.5 gauss. When a frozen sample is gradually warmed, the radioinduced electron spin resonance centers diffuse and take part in secondary reactions. Thus, when the glycine solution was annealed at l93 deg K for l5 sec the water resonance was quenched, and the resonance of the glycine solution then consisted of a triplet with some other resonance superimposed. On further annealing at l93 deg K, the latter disappeared, whereas the triplet was stable nearly up to the melting point of the solution. (P.C.H.)
- Research Organization:
- Norwegian Radium Hospital, Oslo
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-16-008783
- OSTI ID:
- 4817504
- Journal Information:
- Nature, Journal Name: Nature Vol. Vol: 193
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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