ESR STUDIES OF $gamma$-IRRADIATED n-OCTADECYL DISULFIDE
Octadecyl disulfide irradiated at -196 deg C in the absence of oxygen exhibits radicals reflecting breakage at the sulfur group to form RS. radicals as well as breakage in the alkyl group. During storage of the samples at from 0 deg to 40 deg C an increase in RS. concentration is observed while reduction of radicals in the alkyl group takes place. After initial rapid reactions occurring immediately after warm-up, a lower rate is observed for the increase in RS. content and decay of the radicals associated with the alkyl group. Both of these slower processes appear to occur as a result of a common reaction with an activation energy of about 13 kcal/mole. It is believed that this reaction involves the combination of a disulfide link with a radical in the alkyl group and occurs as a result of molecular diffusion in the crystalline material. Calculations based on a diffusion model yield theoretical curves which can be made to fit the experimental results within the limits of experimental error. (auth)
- Research Organization:
- Sandia Corp., Albuquerque, N. Mex.
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-17-008173
- OSTI ID:
- 4738523
- Report Number(s):
- TID-16445; SCDC-2749; 0021-9606
- Journal Information:
- Journal of Chemical Physics (U.S.), Journal Name: Journal of Chemical Physics (U.S.) Vol. Vol: 37; ISSN JCPSA
- Country of Publication:
- United States
- Language:
- English
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