Krypton assay in xenon at the ppq level using a gas chromatographic system and mass spectrometer

Understand

We have developed a new method to measure krypton traces in xenon at unprecedented low concentrations.

• This is a mandatory task for many near-future low-background particle physics detectors.
• Our system separates krypton from xenon using cryogenic gas chromatography.
• The amount of krypton is then quantified using a mass spectrometer.