The use of CO2 gas as an in-situ dosimeter for d.c. and microwave pulse-radiolysis conductivity experiments |
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| Institution: | 1. Dipartimento di Chimica e Farmacia, University of Sassari, Via Vienna 2, I-07100 Sassari, Italy;2. Dipartimento di Scienze Chimiche e Geologiche, University of Cagliari, Cittadella Universitaria, I-09042 Monserrato, Cagliari, Italy;3. Istituto di Chimica Biomolecolare, Consiglio Nazionale delle Ricerche, UOS di Sassari, Trav. La Crucca 3, I-07040 Sassari, Italy |
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| Abstract: | Carbon dioxide gas at a few hundred torr pressure is proposed as a convenient, in-situ dosimetric and test medium for d.c. and microwave pulse radiolysis conductivity experiments. The dose in gray is related to the (pressure independent) conductivity by Dg=2.89 × 102 σCO2 where σCO2 is the radiation induced conductivity in units of ω-1m-1. The measurement of σCO2 and the parameters required for extrapolation to other gaseous and condensed media are discussed. The time required for electron thermalization in CO2 gas at atmospheric pressure is determined to be approximately 100 ps. |
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