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arXiv · 1011.6001

Measurement of the two-photon absorption cross-section of liquid argon with a time projection chamber

I. Badhrees·A. Ereditato·I. Kreslo·M. Messina·U. Moser·B. Rossi·M. S. Weber·M. Zeller·C. Altucci·S. Amoruso·R. Bruzzese·R. Velotta
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Abstract

This paper reports on laser-induced multiphoton ionization at 266 nm of liquid argon in a time projection chamber (LAr TPC) detector. The electron signal produced by the laser beam is a formidable tool for the calibration and monitoring of next-generation large-mass LAr TPCs. The detector that we designed and tested allowed us to measure the two-photon absorption cross-section of LAr with unprecedented accuracy and precision: sigma_ex=(1.24\pm 0.10stat \pm 0.30syst) 10^{-56} cm^4s{-1}.

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I. Badhrees, A. Ereditato, I. Kreslo, M. Messina, U. Moser, B. Rossi, M. S. Weber, M. Zeller, C. Altucci, S. Amoruso, R. Bruzzese, R. Velotta. 2010-12-19. Measurement of the two-photon absorption cross-section of liquid argon with a time projection chamber. https://doi.org/10.1088/1367-2630%2F12%2F11%2F113024

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