非表示:
キーワード:
Physics, Instrumentation and Detectors, physics.ins-det, Astrophysics, Instrumentation and Methods for Astrophysics, astro-ph.IM
要旨:
We have developed a new method to measure krypton traces in xenon at so far
unprecedented low concentrations. This is a mandatory task for many near-future
low-background particle physics detectors. Our system is based on a cryogenic
gas chromatographic krypton/xenon separation and a subsequent mass
spectroscopic krypton quantification. We prove this system to reach a detection
limit of 8 ppq (parts per quadrillion) and present results of distilled xenon
with krypton concentrations below 1 ppt.