1972
DOI: 10.1139/v72-259
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Effect of Electric Field Strength on the Free Ion Yields in the X-Radiolysis of Liquids: Influence of Molecular Structure and Temperature

Abstract: The relative increase in the free ion yield with increasing field strength E, expressed as GE/G:, is smaller when the following quantities are larger: (I ) dielectric constant, (2) temperature, and (3) separation distance between the geminate ion-electron pairs. The field dependence (dGc/dE)/G: equals 9.7/&T2 cm/V at low E, but at higher fields it is affected by the above three factors and by E itself. Results obtained from the liquids propane (123-233 OK), 2-methylpropane (isobutane, 148-294 OK), 2,2-dimethyl… Show more

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Cited by 48 publications
(15 citation statements)
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“…As the liquid was cooled from 296 to 169 K, with concomitant increase of density from 553 to 688 kg m3, G: decreased and the variation of G: with E could be fitted by using YGP. However, on further cooling to 148 K (709 kg m-3) the yields stayed about constant and their field dependence was consistent with YP (6).…”
Section: M' Cathodesupporting
confidence: 63%
See 1 more Smart Citation
“…As the liquid was cooled from 296 to 169 K, with concomitant increase of density from 553 to 688 kg m3, G: decreased and the variation of G: with E could be fitted by using YGP. However, on further cooling to 148 K (709 kg m-3) the yields stayed about constant and their field dependence was consistent with YP (6).…”
Section: M' Cathodesupporting
confidence: 63%
“…[6], where 1 is the distance between the parallel electrodes and V is the applied voltage. For the conditions of this work the diffusion correction (1 1) was negligible.…”
Section: Electron Mobilitymentioning
confidence: 99%
“…The first one is based on the random walk inode1 (22) and is a three dimensional Gaussian (8,23,24). We will call it YG.…”
Section: The Modelmentioning
confidence: 99%
“…f(t)dt represents the fraction that undergoes neutralization between t and t + dt. The fraction of ion pairs, F(t), which exists at any time t after an instantaneous pulse irradiation can be determined simply by integrating f(t) over all values greater than t Although hitherto numerous forms of f(r) have been compared and tested against experimentally observed behaviors of electrons in liquid hydrocarbons (5,9,10,17), no single form has yet been established as the universally satisfactory f(r) (10). Since no such test has been performed in dense gases, we choose a single parameter Gaussian, [3], and a simple exponential function, [6], in the calculation mainly on grounds of their simple forms and of the fact that both forms have been shown to give an adequate description of experimental results under some restriction in the range of applicability (9, lo), which appears to fit the present case (1 1).…”
Section: Lifetime Distribution Functionsmentioning
confidence: 99%