F
Freddy Callens
Researcher at Ghent University
Publications - 197
Citations - 3196
Freddy Callens is an academic researcher from Ghent University. The author has contributed to research in topics: Electron paramagnetic resonance & Electron nuclear double resonance. The author has an hindex of 26, co-authored 197 publications receiving 3008 citations. Previous affiliations of Freddy Callens include University of Oslo.
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Journal ArticleDOI
EPR dosimetry with tooth enamel: A review
Paola Fattibene,Freddy Callens +1 more
TL;DR: A critical review is given of this widely applied dosimetric method based on the (presumed) correlation between the intensity or amplitude of some of the radiation-induced signals with the dose absorbed in the enamel.
Journal ArticleDOI
The second international intercomparison on EPR tooth dosimetry
Albrecht Wieser,Kishor Mehta,Sami Amira,D. Aragno,S. Bercea,A.B. Brik,A. A. Bugai,Freddy Callens,Vadim V. Chumak,Bartlomiej Ciesielski,René Debuyst,S. Dubovsky,Octavian G. Duliu,Paola Fattibene,Edwin H. Haskell,Robert B. Hayes,E.A. Ignatiev,Alexander Ivannikov,V. Kirillov,E D Kleschenko,N. Nakamura,M. Nather,J. Nowak,Sandro Onori,B. Pass,B. Pass,S. Pivovarov,Alexander Romanyukha,O. Scherbina,Alexander I. Shames,Alexander I. Shames,Sergey Sholom,V.G. Skvortsov,V.F. Stepanenko,D.D. Tikounov,Shin Toyoda +35 more
TL;DR: The objective of the programme was to bring together all methods which are currently applied by different laboratories for EPR dose reconstruction and to demonstrate the present state of dosimetry.
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The contribution of CO3(3-) and CO2- to the ESR spectrum near g = 2 of powdered human tooth enamel.
TL;DR: The results clearly demonstrate that the ESR spectrum is composite with at least five paramagnetic species contributing to the signal.
Journal ArticleDOI
The coordinatively saturated vanadium MIL-47 as a low leaching heterogeneous catalyst in the oxidation of cyclohexene
Karen Leus,Matthias Vandichel,Ying-Ya Liu,Ilke Muylaert,Jan Musschoot,Steven Pyl,Henk Vrielinck,Freddy Callens,Guy Marin,Christophe Detavernier,Paul V. Wiper,Yaroslav Z. Khimyak,Michel Waroquier,Veronique Van Speybroeck,Pascal Van Der Voort +14 more
TL;DR: In this paper, a metal organic framework with coordinatively saturated V +IV sites linked together by terephthalic linkers is evaluated as a catalyst in the epoxidation of cyclohexene.
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EPR of carbonate derived radicals: Applications in dosimetry, dating and detection of irradiated food
TL;DR: In this article, it was shown that the majority of radicals in calcified tissues are carbonate derived, e.g., CO>>\s 2.g. COcffff 2>>\s t-cffff, COcffff 3cffff 3t-cffff, COcffff 1.9970, CO>>\ 3cffff 2cffff, and COcffff 0.0045.