Further studies of electron avalanche gain in liquid argon

Author

Kim, J.G. ; Dardin, S.M. ; Kadel, R.W. ; Kadyk, J.A. ; Jackson, K.H. ; Peskov, V. ; Wenzel, W.A. ; Joo, K.S.

Author_Institution

Phys. Div., Lawrence Livermore Nat. Lab., Berkeley, CA, USA

Volume

50

Issue

4

fYear

2003

Firstpage

1073

Lastpage

1077

Abstract

Previously, we showed how small admixtures of xenon (Xe) stabilize electron avalanches in liquid Argon (LAr). In the present work, we have measured the positive charge carrier mobility in LAr with small admixtures of Xe to be 6.4×10^-3 cm²/Vs, in approximate agreement with the mobility measured in pure LAr and consistent with holes as charge carriers. We have measured the concentration of Xe actually dissolved in the liquid and compared the results with expectations based on the amount of Xe gas added to the LAr. We also have tested LAr doped with krypton to investigate the mechanism of avalanche stabilization.

Keywords

argon; carrier mobility; electron avalanches; liquid scintillation detectors; nuclear electronics; readout electronics; xenon; Ar; Xe; avalanche stabilization; charge carrier mobility; electron avalanche gain; liquid argon; small admixtures; Argon; Current measurement; Detectors; Electrons; Laboratories; Needles; Physics; Pulse measurements; Testing; Xenon;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/TNS.2003.815139

Filename

1221924