Počet záznamů: 1

Spatially uniform calibration of a liquid xenon detector at low energies using Kr-83m

  1. 1.
    0346937 - UJF-V 2011 RIV US eng J - Článek v odborném periodiku
    Manalaysay, A. - Undagoitia, T.M. - Askin, A. - Baudis, L. - Behrens, A. - Ferella, A.D. - Kish, A. - Lebeda, Ondřej - Santorelli, R. - Vénos, Drahoslav - Vollhardt, A.
    Spatially uniform calibration of a liquid xenon detector at low energies using Kr-83m.
    Review of Scientific Instruments. Roč. 81, č. 7 (2010), 073303/1-073303/8 ISSN 0034-6748
    Grant CEP: GA MŠk LA318; GA MŠk LC07050
    Výzkumný záměr: CEZ:AV0Z10480505
    Klíčová slova: DARK-MATTER DETECTOR * NUCLEAR RECOIL * ARGON
    Kód oboru RIV: BG - Jaderná, atomová a mol. fyzika, urychlovače
    Impakt faktor: 1.598, rok: 2010

    A difficult task with many particle detectors focusing on interactions below similar to 100 keV is to perform a calibration in the appropriate energy range that adequately probes all regions of the detector. Because detector response can vary greatly in various locations within the device, a spatially uniform calibration is important. We present a new method for calibration of liquid xenon (LXe) detectors, using the short-lived Kr-83m. This source has transitions at 9.4 and 32.1 keV, and as a noble gas like Xe, it disperses uniformly in all regions of the detector. Even for low source activities, the existence of the two transitions provides a method of identifying the decays that is free of background. We find that at decreasing energies, the LXe light yield increases, while the amount of electric field quenching is diminished.
    Trvalý link: http://hdl.handle.net/11104/0187834