This work investigates the capabilities of a state-of-the-art photon counting CdZnTe Timepix3 detector by combining sub-pixel resolution and energy weighted imaging to resolve and identify metallic particles (< 35 µm) in contaminated pharmaceutical hard capsules. While previous pixelated photon counting semiconductor detectors such as the Timepix or Medipix3 allowed single event analysis only for low photon fluxes that are rather unsuitable for imaging purposes, the new Timepix3 detector allows for the analysis of single events even at high X-ray fluxes due to its data driven data output. The challenges of the project like sufficient charge collection and processing of larger data sets for sub-pixel imaging, the influence of charge sharing and X-ray fluorescence on the spatial and energy resolution as well as 3 different approaches of the energy weighted identification of the metallic powders will be discussed.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.