publication . Master thesis . 2011

Surface coatings as xenon diffusion barriers on plastic scintillators : Improving Nuclear-Test-Ban Treaty verification

Bläckberg, Lisa;
Open Access English
  • Published: 01 Jan 2011
  • Publisher: Uppsala universitet, Materialteori
  • Country: Norway
This thesis investigates the ability of transparent surface coatings to reduce xenon diffusion into plastic scintillators. The motivation for the work is improved radioxenon monitoring equipment, used with in the framework of the verification regime of the Comprehensive Nuclear-Test-Ban Treaty. A large part of the equipment used in this context incorporates plastic scintillators which are in direct contact with the radioactive gas to be detected. One problem with such setup is that radioxenon diffuses into the plastic scintillator material during the measurement, resulting in an unwanted memory effect consisting of residual activity left in the detector. In this...
free text keywords: Plastic scintillator, Radioxenon, Diffusion barrier, Surface coating, Atomic Layer Deposition, Comprehensive Nuclear-Test-Ban Treaty
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