1965
DOI: 10.1126/science.147.3665.1571
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Electron Yield in the ggr-Radiolysis of Water Vapor

Abstract: Nitrous oxide at low concentrations reduces the high yield of hydrogen from y-irradiated water vapor containing methanol from 8.9 per 100 electron volts absorbed to a plateau value of 5.9. This indicates that both electrons (yield 3.0) and hydrogen atoms (yield 5.4) are precursors to the hydrogen, the former being scavenged by nitrous oxide.The high yield of hydrogen, G(H2), produced when various additives are present during the y-irradiation of water vapor has been interpreted (1) in terms of reactions of H a… Show more

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Cited by 10 publications
(10 citation statements)
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“…In water vapor containing nitrous oxide only, G(N,) = 3.0 -+_ 0.3 which was identified with the yield of scavengeable electrons (5,6) and is in reasonable agreement with the value calculated from the W-value in water vapor (20,21). Figures 2 and 3, however, show G(H2) falls by 2.2 i 0.6 when as little as 0.1 mole % nitrous oxide or sulfur hexafluoride is added to water vapor containing sufficient methanol to capture all available H atoms.…”
Section: Discussionsupporting
confidence: 70%
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“…In water vapor containing nitrous oxide only, G(N,) = 3.0 -+_ 0.3 which was identified with the yield of scavengeable electrons (5,6) and is in reasonable agreement with the value calculated from the W-value in water vapor (20,21). Figures 2 and 3, however, show G(H2) falls by 2.2 i 0.6 when as little as 0.1 mole % nitrous oxide or sulfur hexafluoride is added to water vapor containing sufficient methanol to capture all available H atoms.…”
Section: Discussionsupporting
confidence: 70%
“…Increasing the concentration of nitrous oxide or sulfur hexafluoride from 0.1 to 1 mole % had no noticeable effect on G(H2); hence we can assume that 0.1 mole % is sufficient to capture all available electrons. I11 the absence of an electron scavenger, electrons are converted to hydrogen atoms via reaction [5] and the H atoms converted to H z via reaction [6]. These results therefore suggest that electroil -positive ion neutralization in water vapor containing methanol gives H atoms with a yield corresponding to G = 2.2 F 0.6, unless ion-ion neutralization results in the formation of H atoms.…”
Section: Discussionmentioning
confidence: 81%
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