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A perturbation method to examine the steady-state charge transport in the recombination and saturation regimes of ionization chambers

Abstract : We developed a perturbation method to predict the behaviour of ionization chambers functioning in current mode when the space charges are neglected. This method allowed us to go for the first time beyond the Thomson problem by taking into account, in the output current calculation, the spatial variations of the primary charge density induced by the incident ionizing particles. The results obtained are presented under the form of series for which we studied the convergence radius and quality in a simple case. Additionally, we solved the Thomson problem when the space charges are neglected and established for the first time the explicit relationship linking the input voltage to the output current. Finally, we calculated the voltage that delimits the transition between the recombination regime and the saturation plateau.
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http://hal.in2p3.fr/in2p3-00324443
Contributor : Emmanuelle Vernay <>
Submitted on : Thursday, September 25, 2008 - 8:54:19 AM
Last modification on : Friday, November 20, 2020 - 12:50:05 PM

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S. Chabod. A perturbation method to examine the steady-state charge transport in the recombination and saturation regimes of ionization chambers. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Elsevier, 2008, 595, pp.419-425. ⟨10.1016/j.nima.2008.07.115⟩. ⟨in2p3-00324443⟩

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