Attenuation of vacuum ultraviolet light in liquid argon
arXiv:1511.07724 · doi:10.1140/epjc/s10052-012-2190-z
Abstract
The transmission of liquid argon has been measured, wavelength resolved, for a wavelength interval from 118 to 250 nm. The wavelength dependent attenuation length is presented for pure argon. It is shown that no universal wavelength independent attenuation length can be assigned to liquid argon for its own fluorescence light due to the interplay between the wavelength dependent emission and absorption. A decreasing transmission is observed below 130 nm in both chemically cleaned and distilled liquid argon and assigned to absorption by the analogue of the first argon excimer continuum. For not perfectly cleaned argon a strong influence of impurities on the transmission is observed. Two strong absorption bands at 126.5 and 141.0 nm with approximately 2 and 4 nm width, respectively, are assigned to traces of xenon in argon. A broad absorption region below 180 nm is found for unpurified argon and tentatively attributed to the presence of water in the argon sample.
arXiv comment9 pages, 12 figures
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- Ion-beam excitation of liquid argon
- Attenuation of vacuum ultraviolet light in pure and xenon-doped liquid argon - an approach to an assignment of the near-infrared emission from the mixture
- Status and New Ideas Regarding Liquid Argon Detectors
- Attenuation measurements of vacuum ultraviolet light in liquid argon revisited
- Scintillation and optical properties of xenon-doped liquid argon
- Intense Infrared Scintillation of Liquid Ar-Xe Mixtures
- Study of scintillation light collection, production and propagation in a 4 tonne dual-phase LArTPC
- Large-Scale, Precision Xenon Doping of Liquid Argon
- Measurement of the attenuation length of argon scintillation light in the ArDM LAr TPC
- Analysis of the light production and propagation in the 4-tonne dual-phase demonstrator
- In-situ measurement of the scintillation light attenuation in liquid argon in the GERDA experiment