Limits on the release of Rb isotopes from a zeolite based 83mKr calibration source for the XENON project

0367857 - ÚJF 2013 RIV GB eng J - Journal Article
Hannen, V.M. - Aprile, E. - Baudis, L. - Beck, M. - Bokeloh, K. - Ferella, A.D. - Giboni, K. - Lang, R.F. - Lebeda, Ondřej - Ortjohann, H.W. - Schumann, M. - Špalek, Antonín - Vénos, Drahoslav - Weinheimer, C.
Limits on the release of Rb isotopes from a zeolite based 83mKr calibration source for the XENON project.
Journal of Instrumentation. Roč. 6, Oct. (2011), P10013/1-P10013/11. ISSN 1748-0221. E-ISSN 1748-0221
R&D Projects: GA MŠMT LC07050
Institutional research plan: CEZ:AV0Z10480505
Keywords : noble-liquid detectors * detector alignment * ionization two phase
Subject RIV: BG - Nuclear, Atomic and Molecular Physics, Colliders
Impact factor: 1.869, year: 2011

The isomer 83mKr with its half-life of 1.83 h is an ideal calibration source for a liquid noble gas dark matter experiment like the XENON project. However, the risk of contamination of the detector with traces of the much longer lived mother isotope 83Rb(T1/2 = 86.2 d) has to be ruled out. In this work the release of 83Rb atoms from a 1.8 MBq 83Rb source embedded in zeolite beads has been investigated. To do so, a cryogenic trap has been connected to the source for about 10 days, after which it was removed and probed for the strongest 83Rbγ-rays with an ultra-sensitive Germanium detector.
Permanent Link: http://hdl.handle.net/11104/0202384