Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

The Impact of XRF Escape Process on the Energy Resolution of a NaI Scintillation Detector for Medical Imaging or Gamma-Ray Spectroscopy

Version 1 : Received: 7 August 2023 / Approved: 8 August 2023 / Online: 8 August 2023 (13:04:25 CEST)

How to cite: Scafè, R.; Puccini, M.; Pellegrini, R.; Pani, R. The Impact of XRF Escape Process on the Energy Resolution of a NaI Scintillation Detector for Medical Imaging or Gamma-Ray Spectroscopy. Preprints 2023, 2023080680. https://doi.org/10.20944/preprints202308.0680.v1 Scafè, R.; Puccini, M.; Pellegrini, R.; Pani, R. The Impact of XRF Escape Process on the Energy Resolution of a NaI Scintillation Detector for Medical Imaging or Gamma-Ray Spectroscopy. Preprints 2023, 2023080680. https://doi.org/10.20944/preprints202308.0680.v1

Abstract

Present work investigates, in photon energy domains of specific interest for medical imaging, the effect of the escape of X-ray fluorescence from the scintillator materials on the energy resolution of scintillation detector itself. Monolithic as well as pixelated crystals differently sized are considered, in the case of the NaI because it is the gold standard in the field. The volumetric ratio is introduced, as a figure of merit, taking into account, alongside the surface-to-volume ratio, the geometric shape, the elemental composition and also the mean-free-path for the given scintillator and energy. The inter-crystal XRF escape is finally suggested to be considered among the effects producing image blurring in segmented scintillatros due to the spread of events between the primary pixel and the first neighbors ones.

Keywords

gamma-ray scintillation detector; XRF escape; SPECT; PET; charge spread spectroscopy; inter-crystal scatter; inter-crystal XRF escape

Subject

Physical Sciences, Nuclear and High Energy Physics

Comments (0)

We encourage comments and feedback from a broad range of readers. See criteria for comments and our Diversity statement.

Leave a public comment
Send a private comment to the author(s)
* All users must log in before leaving a comment
Views 0
Downloads 0
Comments 0
Metrics 0


×
Alerts
Notify me about updates to this article or when a peer-reviewed version is published.
We use cookies on our website to ensure you get the best experience.
Read more about our cookies here.