Properties of CdWO4 and ZnWO4 at Liquid Nitrogen Temperature
2009 (English)In: 2009 IEEE NUCLEAR SCIENCE SYMPOSIUM CONFERENCE RECORD, VOLS 1-5 / [ed] Yu B, 2009, 1561-1565 p.Conference paper (Refereed)
Two samples of 10 mm diameter and 10 mm height CdWO4 (CdWO) and ZnWO4 (ZnWO) scintillators were studied at room (RT) and liquid nitrogen (LN2) temperature. At room temperature the crystals were coupled to a Photonis XP3212 photomultiplier. During experiments in liquid nitrogen a Large Area Avalanche Photodiode (LAAPD) was used as a photodetector. Measurements of light output, non-proportionality of the light yield and intrinsic resolution as a function of gamma-ray energies were performed at both temperatures. The non-proportionality for the two crystals, likely CaWO4, reveals temperature dependence, to reach the same values at LN2 temperature. Intrinsic energy resolution for both crystals was also changed at LN2 comparing to the data collected at RT. The intrinsic energy resolution was improved below 100 keV and deteriorated for higher energies.
Place, publisher, year, edition, pages
2009. 1561-1565 p.
, IEEE Nuclear Science Symposium Conference Record, ISSN 1082-3654
CWO, ZWO, intrinsic resolution, light output, liquid nitrogen temperature, nonproportionality
Radiology, Nuclear Medicine and Medical Imaging
IdentifiersURN: urn:nbn:se:kth:diva-29631ISI: 000280505100340ScopusID: 2-s2.0-77951183982ISBN: 978-1-4244-3961-4OAI: oai:DiVA.org:kth-29631DiVA: diva2:408498
IEEE Nuclear Science Symposium Conference 2009
QC 201104052011-04-052011-02-112011-04-05Bibliographically approved