Memory effect, resolution, and efficiency measurements of an Al2O3 coated plastic scintillator used for radioxenon detection
2013 (English)In: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, ISSN 0168-9002, Vol. 714, 128-135 p.Article in journal (Refereed) Published
A cylindrical plastic scintillator cell, used for radioxenon monitoring within the verification regime of the Comprehensive Nuclear-Test-Ban Treaty, has been coated with 425 nm Al2O3 using low temperature Atomic Layer Deposition, and its performance has been evaluated. The motivation is to reduce the memory effect caused by radioxenon diffusing into the plastic scintillator material during measurements, resulting in an elevated detection limit. Measurements with the coated detector show both energy resolution and efficiency comparable to uncoated detectors, and a memory effect reduction of a factor of 1000. Provided that the quality of the detector is maintained for a longer period of time, Al2O3 coatings are believed to be a viable solution to the memory effect problem in question.
Place, publisher, year, edition, pages
2013. Vol. 714, 128-135 p.
Radioxenon, Gas diffusion barrier, Plastic scintillator, Comprehensive Nuclear-Test-Ban Treaty, Atomic layer deposition, Al2O3 coating
IdentifiersURN: urn:nbn:se:uu:diva-203264DOI: 10.1016/j.nima.2013.02.045ISI: 000319251800019OAI: oai:DiVA.org:uu-203264DiVA: diva2:636273