Projects per year
Abstract
The Large Underground Xenon (LUX) experiment operates at the Sanford Underground Research Facility to detect nuclear recoils from the hypothetical Weakly Interacting Massive Particles (WIMPs) on a liquid xenon target. Liquid xenon typically contains trace amounts of the noble radioactive isotopes $^{85}$Kr and $^{39}$Ar that are not removed by the {\em in situ} gas purification system. The decays of these isotopes at concentrations typical of research-grade xenon would be a dominant background for a WIMP search exmperiment. To remove these impurities from the liquid xenon, a chromatographic separation system based on adsorption on activated charcoal was built. 400\,kg of xenon was processed, reducing the average concentration of krypton from 130\,ppb to 3.5\,ppt as measured by a cold-trap assisted mass spectroscopy system. A 50 kg batch spiked to 0.001 g/g of krypton was processed twice and reduced to an upper limit of 0.2 ppt.
| Original language | English |
|---|---|
| Pages (from-to) | 80-87 |
| Journal | Astroparticle Physics |
| Volume | 97 |
| Early online date | 31 Oct 2017 |
| DOIs | |
| Publication status | Published - Jan 2018 |
Keywords / Materials (for Non-textual outputs)
- physics.ins-det
Fingerprint
Dive into the research topics of 'Chromatographic separation of radioactive noble gases from xenon'. Together they form a unique fingerprint.Projects
- 2 Finished
-
The LUX-ZEPLIN (LZ) Dark Matter Search
Murphy, A. (Principal Investigator)
1/04/15 → 30/09/19
Project: Research
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LZ R&D: Bridging Mini-Proposal to STFC
Murphy, A. (Principal Investigator)
1/10/14 → 31/03/15
Project: Research
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