Core–Valence-Luminescence Cs–M–Cl (M = Zn, Mg) Scintillators for Photon-Counting X-ray Detectors
Rattachement africain : nl, ua, us. Niveau de preuve : code pays fourni par la source.
Le résumé fourni par la source
High Resolution Image Download MS PowerPoint Slide X-ray photon-counting detectors (PCDs) are a rapidly developing technology used in medical imaging. Current PCDs are based on room-temperature semiconductors, such as CdTe and CZT, directly converting incident X-ray photons into electrical pulses. An alternative to this approach is the use of ultrafast scintillators in combination with silicon photomultipliers. A very interesting class of materials potentially suitable for this application is scintillators exhibiting core–valence luminescence (CVL), which typically has a decay time between 0.5 and 2 ns. In this work, two families of Cs–Cl-based compounds, Cs–Zn–Cl and Cs–Mg–Cl, are investigated for their potential application in PCDs. These families of compounds are especially interesting because most members exclusively show CVL at room temperature, resulting in a fast scintillation pulse containing no slow components. Additionally, several approaches to tailor the scintillation properties of these materials, i.e., doping with Br – and Zn 2+, are studied. Unfortunately, all compounds show a strong drop in the CVL response in the diagnostic energy range (25–150 keV), the operational range of a PCD. PCDs based on these materials will thus be able to handle the high X-ray fluence rate of an imaging task but will not be able to sufficiently discriminate the energies of incident X-ray photons. In addition to the Cs–Zn–Cl and Cs–Mg–Cl compounds, the nonproportional response of the CVL component of BaF 2 is studied utilizing fast digitization of individual scintillation pulses in order to discriminate between processes related to the CVL and self-trapped exciton emission of BaF 2 .
Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.
Le contrôle bibliographique ouvert
DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.
- Titre Crossref
- Core–Valence-Luminescence Cs–M–Cl (M = Zn, Mg) Scintillators for Photon-Counting X-ray Detectors
- Date Crossref
- 01/09/2025
- Éditeur
- American Chemical Society (ACS)
- Type
- journal-article
Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude, et il ne compte pas comme une seconde source scientifique indépendante.
Où se fait cette recherche
-
Delft University of Technology pays non établi dans la noticeUniversité ou école supérieure
-
Institute for Scintillation Materials pays non établi dans la noticeStructure de recherche
-
University of Tennessee at Knoxville pays non établi dans la noticeUniversité ou école supérieure
-
Faculty of Applied Sciences pays non établi dans la noticeUniversité ou école supérieure
-
Department of Materials Science and Engineering pays non établi dans la noticeInstitution
-
Scintillation Materials Research Centre pays non établi dans la noticeStructure de recherche
-
University of Tennessee Knoxville pays non établi dans la noticeUniversité ou école supérieure
-
Department of Nuclear Engineering pays non établi dans la noticeInstitution
-
Holland Proton Therapy Center pays non établi dans la noticeInstitution
Delft University of Technology, Institute for Scintillation Materials et University of Tennessee at Knoxville, avec 6 autres affiliations.
Une affiliation ne permet pas de déduire la nationalité d’un auteur.