Response of an $\alpha$ source mounted in a liquid argon ionization cell and read out in full charge collection mode - IN2P3 - Institut national de physique nucléaire et de physique des particules Access content directly
Journal Articles Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment Year : 1999

Response of an $\alpha$ source mounted in a liquid argon ionization cell and read out in full charge collection mode

Abstract

The total charge response curve of an Am source placed in a liquid argon ionization cell has been measured. In a pure liquid argon sample (O concentration 0.1 ppm), it can be described by a semi-empirical formula which is derived from a model formerly elaborated by Thomas and Imel. The validity of this new formula was also tested in the case of oxygen-polluted liquid argon. The agreement with the data seems to indicate that the initial ion–electron pair recombination factor is not affected when the O concentration is smaller than 7 ppm. Further use of our recombination factor parameterization has been made to analyze data of liquid argon purity monitors utilizing Am sources with a sensitivity to O concentrations of 0.1 ppm. (Elsevier)

Dates and versions

in2p3-00003652 , version 1 (31-05-1999)

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Cite

M.L. Andrieux, J. Collot, P. de Saintignon, Anthony Ferrari, J.Y. Hostachy, et al.. Response of an $\alpha$ source mounted in a liquid argon ionization cell and read out in full charge collection mode. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1999, 427, pp.568-573. ⟨10.1016/S0168-9002(99)00059-5⟩. ⟨in2p3-00003652⟩
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