Experimental and calculated yields in the radiolysis of water at very high dose rates

1970

Self Cite

Carbon d~oxide has been ~rradiated with electron pulses at a dose rate of 2 x loz7 eV g-I s-'.The measured carbon monoxide yield IS G(CO) = 7.8 + 0.3. Addit~on of SF6, an electron scavenger, reduces thls y~eld to G(C0) = 4.8 which is the same, w~t h~n the exper~mental error, as the low dose rate yield G(CO) = 4.5 + 0.5. The efiect of SF6 and the difference between the high and low dose rate y~elds IS explained by suppression of dlssociat~ve neutralization of the CzO,+ Ion.

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Carbon monoxide yields in the radiolysis of carbon dioxide at very high dose rates

Willis¹,

Boyd²,

1970

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“…The irradiation source used, a Febetron 705,3 has been described previously (20,21). For the determination of nitrogen, oxygen, and nitrite yields the samples were irradiated in quartz cells (22).…”

Section: Irradiationsmentioning

confidence: 99%

Primary Yields and Mechanisms in the Radiolysis of N₂O from High Intensity Electron Pulse Irradiations of N₂O–O₂ Mixtures

Willis¹,

Boyd²,

1972

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“…These data and the absorbed dose and dose rate values were used with a computer program developed by Schmidt (41,42). The use of this program in similar calculations has been described previously (43). The computed values Figs.…”

Section: Initiationmentioning

confidence: 99%

A Positive-Ion Reaction Mechanism for the Radiation Induced Oxidation of Carbon Monoxide in the High Dose Rate Radiolysis of CO–O₂ Mixtures

Willis¹,

Boyd²,

1972

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Carbon dioxide and ozone yields have been measured in the irradiation of CO–O2 mixtures with single pulses of electrons. The yields of CO2 at 2 × 1027 ev g−1 s−1 are large G(CO2) = 15 ± 1 from 20–60% O2. These decrease by ∼50% at 1028 eV g−1 s−1. Although the results are somewhat irreproducible the addition of c-C4F8, an electron scavenger, increases these CO2 yields at both dose rates by up to a factor of 15. They are reduced to G(CO2) < 2 by the addition of positive ion scavengers. These results are consistent with a chain reaction similar to that proposed for low dose rate studies involving [Formula: see text], [Formula: see text], and [Formula: see text] as chain carriers.The ozone yields are consistent with a total oxygen atom yield of G(O) = 1.4 in pure CO from neutral processes.