Detection of krypton in xenon for dark matter applications
arXiv:1103.2714 · doi:10.1016/j.nima.2011.11.043
Abstract
We extend our technique for observing very small concentrations of impurities in xenon gas to the problem of krypton detection. We use a conventional mass spectrometer to identify the krypton content of the xenon, but we improve the sensitivity of the device by about five orders of magnitude with a liquid nitrogen cold trap. We find that the absolute krypton concentration of the xenon can be inferred from the mass spectrometry measurements, and we identify krypton signals at concentrations as low as 0.5x10^{-12} mol/mol (Kr/Xe). This technique simplifies the monitoring of krypton backgrounds for WIMP dark matter searches in liquid xenon.
arXiv comment15 pages, 10 figures
References in corpus (8)
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- Radiogenic and Muon-Induced Backgrounds in the LUX Dark Matter Detector
- Dark Matter Search Results from the Commissioning Run of PandaX-II
- Removing krypton from xenon by cryogenic distillation to the ppq level
- Calibration, event reconstruction, data analysis and limits calculation for the LUX dark matter experiment
- Chromatographic separation of radioactive noble gases from xenon
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- The XLZD Design Book: Towards the Next-Generation Liquid Xenon Observatory for Dark Matter and Neutrino Physics
- Experimental Analysis of PandaX-4T Cryogenic Distillation System for Removing Krypton from Xenon
- Xenon purity analysis for EXO-200 via mass spectrometry
- Design and Commissioning of the PandaX-4T Cryogenic Distillation System for Krypton and Radon Removal
- The LUX Dark Matter Search -- Status Update
- In situ measurements of Krypton in Xenon gas with a quadrupole mass spectrometer following a cold-trap at a temporarily reduced pumping speed
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- Versal deformations of pairs and Cohen-Macaulay approximation