Počet záznamů: 1  

A novel Kr-83m tracer method for characterizing xenon gas and cryogenic distillation systems

  1. 1. 0439712 - UJF-V 2015 RIV GB eng J - Článek v odborném periodiku
    Rosendahl, S. - Bokeloh, K. - Brown, E. - Cristescu, R. - Fieguth, A. - Huhmann, C. - Lebeda, Ondřej - Levy, C. - Murra, M. - Schneider, S. - Vénos, Drahoslav - Weinheimer, C.
    A novel Kr-83m tracer method for characterizing xenon gas and cryogenic distillation systems.
    Journal of Instrumentation. Roč. 9, OCT (2014), p10010 ISSN 1748-0221
    Grant CEP: GA ČR(CZ) GAP203/12/1896; GA MŠk(XE) LM2011019
    Institucionální podpora: RVO:61389005
    Klíčová slova: photon detectors for UV * visible and IR photons (gas) * gas systems and purification * scintillators, scintillation and light emission processes (solid, gas and liquid scintillators) * very low-energy charged particle detectors
    Kód oboru RIV: JB - Senzory, čidla, měření a regulace
    Impakt faktor: 1.399, rok: 2014

    The radioactive isomer Kr-83m has many properties that make it very useful for various applications. Its low energy decay products, like conversion, shake-off and Auger electrons as well as X-and gamma-rays are used for calibration purposes in neutrino mass experiments and direct dark matter detection experiments. Thanks to the short half-life of 1.83 h and the decay to the ground state Kr-83, one does not risk contamination of any low-background experiment with long-lived radionuclides. In this paper, we present a new approach, using (83m)Kras a radioactive tracer in noble gases. A method of doping Kr-83m into xenon gas and its detection, using special custom-made detectors, based on a photomultiplier tube, is described. Two applications of this method are presented: firstly, it can be used to characterize the particle flow inside of gas routing systems and determine the circulation speed of gas particles inside of a gas purification system for xenon. Secondly, it is used for rapid estimating of the separation performance of a distillation system.
    Trvalý link: http://hdl.handle.net/11104/0242935