Ionization in Liquids due to Alpha Particles

Richards, E.W.T.

doi:10.1088/0370-1298/66/7/308

Cited by 7 publications

(1 citation statement)

References 3 publications

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“…Jaff e's and Onsager's theories have been tested with liquid dielectrics. There have been reports either supporting (Pa0 1948, Giova et a1 1967 or against (Richards 1953, Januszajtis 1970) the Jaffe theory. Onsager's theory has been tested for a variety of liquid dielectrics and initial ion distributions (Jahns and Jacobi 1966, Mozumder 1974, Casanovas 1975.…”

Section: Data and Discussionmentioning

confidence: 96%

A liquid ionisation chamber for neutron dosimetry

Chu¹,

Grant²,

Almond³

1980

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Theories of ionisation in liquid and the use of liquid ionisation chambers in mixed neutron field dosimetry have been studied. Theoretical models developed by Jaffe and by Onsager were used for comparison with the experimental measurements. The Jaffe method predicts a higher collecting efficiency than does the Onsager model. Gamma and neutron sensitivities of a liquid chamber can be calculated by the Bragg-Gray principle and Onsager's theory. The calculation is subject to relatively large uncertainties, mainly due to insufficient knowledge of the ion distribution in ionisation tracks and of W/e values for iso-octane. The chamber constructed for clinical use should work best for mixed neutron fields with gamma-neutron ratios of 10-20%; however, it would be difficult to use a liquid ionisation chamber to detect small neutron variations in mixed fields with large gamma components.

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Section: Data and Discussionmentioning

confidence: 96%