Correlation of positronium yield with excess Electron Mobility in Liquid Neopentane

Jacobsen, F. M.; Mogensen, Ole; Trumpy, G.

doi:10.1016/0301-0104(82)88133-0

Cited by 23 publications

(7 citation statements)

References 44 publications

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“…28 When comparing the variation with T of I 3 in n-hexane and in 2,2-DMB to that of (e Ϫ ) in the same liquids, 35,36 we find that both I 3 and (e Ϫ ) display a rather steady increase. 37 This similarity of temperature dependence of those two quantities supports the observation that was made by Jacobsen et al 33 in neopentane. In TMS, however, the situation is quite different.…”

Section: B New Datasupporting

confidence: 70%

“…It remains unclear, however, why its behavior contrasts with that of neopentane. 33 Finally, we used Monte Carlo simulation techniques to perform a sensitivity study on the influence of various physical parameters on Ps formation. In the light of those simulations, the problem clearly appears as being multiparametrical.…”

Section: Discussionmentioning

confidence: 99%

“…In order to overcome this intrinsic limitation of solventto-solvent comparisons, Mogensen and co-workers 33 also studied the influence of temperature (T) on I 3 in a single solvent, neopentane, to assess more firmly the bases of the foreseen correlation. From their study, ranging from the melting point of neopentane up to its critical temperature, the idea of a I 3 vs (e Ϫ ) correlation was reinforced by the fact that the variation with temperature of those two quantities displayed some similarities.…”

Section: A Compilation Of Datamentioning

confidence: 99%

“…͑ii͒ In the specific case of neopentane, 33 it can be noted that both I 3 and (e Ϫ ) level off a few tens of degrees before the critical point, but the ranges of T values in which these quantities remain constant do not coincide exactly. In our opinion, this is evidence that I 3 does not depend solely on the value of (e Ϫ ).…”

Section: A Compilation Of Datamentioning

confidence: 99%

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On the influence of electron mobilities on the yields of formation of positronium in liquids: New I3 measurements and Monte Carlo simulations

Billard

Goulet

Jay‐Gerin

et al. 1998

The Journal of Chemical Physics

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We study the formation of positronium ͑Ps͒ at the end of the radiation tracks generated by the passage of energetic positrons in various liquids. We focus particularly on the possible influence of the thermal electron mobility (e Ϫ) on this process. To this end, we present a compilation of experimental data of the probability of ortho-Ps formation I 3 and (e Ϫ) in 51 pure liquids at room temperature. We also present new measurements of I 3 as a function of temperature for n-hexane, 2,2-dimethylbutane, tetramethylsilane, and tetramethylstannane from the melting point up to 294 K. Those results are compared to the variation of (e Ϫ) with temperature which can be found in the literature. Finally, we use Monte Carlo simulation techniques to perform a sensitivity study in which we evaluate the relative contributions of various physicochemical properties of the liquids ͑such as the mean thermalization distances of e ϩ and e Ϫ , their thermal mobilities, the dielectric constant, and the temperature͒ on the values of I 3. A review of previous works on this question is also given.

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Section: B New Datasupporting

confidence: 70%

Section: Discussionmentioning

confidence: 99%

Section: A Compilation Of Datamentioning

confidence: 99%

Section: A Compilation Of Datamentioning

confidence: 99%

See 2 more Smart Citations

On the influence of electron mobilities on the yields of formation of positronium in liquids: New I3 measurements and Monte Carlo simulations

Billard

Goulet

Jay‐Gerin

et al. 1998

The Journal of Chemical Physics

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“…In the cases described above, the pressure over the liquid sample was produced by own saturated vapour, always well below the atmospheric one. An exception is the case published by Jacobsen et al [142] , where the sample in a closed vessel was heated up to the critical point. In neopentane (2,2-dimethyl propane) the temperature and pressure at critical point are 433.4 K and 3.13 MPa, respectively.…”

Section: Molten Alkanes and Alcoholsmentioning

confidence: 99%

Positronium as a probe of small free volumes in crystals, polymers and porous media

Goworek¹

2014

Annales UMCS, Chemia

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A positron annihilation study of hydrated DNA

Warman

Eldrup

1986

Biopolymers

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SynopsisPositron annihilation measurements are reported for hydrated DNA as a function of water content and as a function of temperature (20 to -18OOC) for samples containing 10 and 50% wt of water. The ortho-positronium mean lifetime and its intensity show distinct variations with the degree of hydration and with temperature for the 50% sample. The 10% water sample was relatively insensitive to temperature variation. The results indicate that hydrated DNA containing up to 10% water behaves as a rigid crystalline solid but that the rigidity markedly decreases with a further increase in water content until, for approximately 50% water, its properties resemble more those of a highly viscous fluid.

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Correlation of positronium yield with excess Electron Mobility in Liquid Neopentane

Cited by 23 publications

References 44 publications

On the influence of electron mobilities on the yields of formation of positronium in liquids: New I3 measurements and Monte Carlo simulations

On the influence of electron mobilities on the yields of formation of positronium in liquids: New I3 measurements and Monte Carlo simulations

Positronium as a probe of small free volumes in crystals, polymers and porous media

A positron annihilation study of hydrated DNA

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