Dose Rate Effects In Liquid Hydrocarbon Radiolysis
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Report Number: ASD TR 61-169
Author(s): Nevitt, T. D., Wilson, W. A.
Corporate Author(s): American Oil Company, Research and Development Department
Laboratory: Directorate of Materials and Processes
Date of Publication: 1961-06
Pages: 27
Contract: AF 33(616)-7089
DoD Project: 7360
DoD Task: 73607
Identifier: AD0267149
Abstract:
Previous hydrocarbon radiolyses have shown product differences that might have been attributed to dose rate differences. During this study, the effects of extremely high dose rates on products of hydrocarbon radiolyses were examined. Cyclohexane, hexane, and pentane were irradiated at 2 x 1016, 5 x 1020, and 5 x 1023 ev/g-sec. Radiation dose ranged from 1019 to 1020 ev/g.The products from cyclohexane: hydrogen, cyclohexane and dicyclohexyl did not change with dose rate. Experiments using cyclohexane for hydrogen scavenging or deuterium labeling gave no evidence for dose rate effects occurring in radiation spurs. Low molecular weight products from hexane change slightly with dose rate; C12 products from hexane and C10 products from pentane show small but definite dose rate dependence.At the high dose rates investigated, dose rate does not control product ratios. The results indicate a more marked dependence on dose rate might be found at doses lower than examined here.
Provenance: Lockheed Martin Missiles & Fire Control
Author(s): Nevitt, T. D., Wilson, W. A.
Corporate Author(s): American Oil Company, Research and Development Department
Laboratory: Directorate of Materials and Processes
Date of Publication: 1961-06
Pages: 27
Contract: AF 33(616)-7089
DoD Project: 7360
DoD Task: 73607
Identifier: AD0267149
Abstract:
Previous hydrocarbon radiolyses have shown product differences that might have been attributed to dose rate differences. During this study, the effects of extremely high dose rates on products of hydrocarbon radiolyses were examined. Cyclohexane, hexane, and pentane were irradiated at 2 x 1016, 5 x 1020, and 5 x 1023 ev/g-sec. Radiation dose ranged from 1019 to 1020 ev/g.The products from cyclohexane: hydrogen, cyclohexane and dicyclohexyl did not change with dose rate. Experiments using cyclohexane for hydrogen scavenging or deuterium labeling gave no evidence for dose rate effects occurring in radiation spurs. Low molecular weight products from hexane change slightly with dose rate; C12 products from hexane and C10 products from pentane show small but definite dose rate dependence.At the high dose rates investigated, dose rate does not control product ratios. The results indicate a more marked dependence on dose rate might be found at doses lower than examined here.
Provenance: Lockheed Martin Missiles & Fire Control