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Alexander I. Shames
Researcher at Ben-Gurion University of the Negev
Publications - 263
Citations - 4756
Alexander I. Shames is an academic researcher from Ben-Gurion University of the Negev. The author has contributed to research in topics: Electron paramagnetic resonance & Paramagnetism. The author has an hindex of 34, co-authored 255 publications receiving 4253 citations. Previous affiliations of Alexander I. Shames include Dalhousie University & Hebrew University of Jerusalem.
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Journal ArticleDOI
Defects and impurities in nanodiamonds: EPR, NMR and TEM study
Alexander I. Shames,Alexander M. Panich,Wojciech Kempiński,A. E. Alexenskii,M. V. Baidakova,A. T. Dideikin,V. Yu. Osipov,V.I. Siklitski,Eiji Osawa,Masaki Ozawa,A. Ya. Vul +10 more
TL;DR: In this article, the anomalous reduction in the spin-lattice relaxation time of 13 C (from several hours in natural diamond to ∼150ms in UDD clusters) is attributed to the interaction between the unpaired electrons of the paramagnetic centers and nuclear spins.
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Review Article: Synthesis, properties, and applications of fluorescent diamond particles.
Olga Shenderova,Alexander I. Shames,Nicholas Nunn,Marco D. Torelli,Igor I. Vlasov,Alexander M. Zaitsev +5 more
TL;DR: The authors demonstrate how the combination of fluorescent spectroscopy and electron paramagnetic resonance provides valuable insight into the types of radiation-induced defects formed and their evolution upon thermal annealing, thereby guiding FND performance optimization.
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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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Do π-dimers of tetrathiafulvalene cation radicals really exist at room temperature?
Vladimir Khodorkovsky,Lev Shapiro,Pnina Krief,Alexander I. Shames,Gilles Mabon,Alain Gorgues,Michel Giffard +6 more
TL;DR: The longest wave absorption band of the tetramethylthio-tetrathiafulvalene cation radical, which is usually interpreted as a π-dimer band, is shown to be the intrinsic cationradical absorption, all studied cation radicals in solution at room temperature exist as paramagnetic monomers and only tetrathyltetrathiaefulvelene and tetramethyltetrathylfvalene (TTHV) radicals undergo πdimerization at low temperatures as mentioned in this paper.
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Nuclear magnetic resonance study of ultrananocrystalline diamonds
Alexander M. Panich,Alexander I. Shames,Hans-Martin Vieth,Eiji Ōsawa,M. Takahashi,A. Ya. Vul +5 more
TL;DR: In this paper, a nuclear magnetic resonance (NMR) study of UNCD materials produced by detonation is presented, where the 13C and 1H NMR spectra, spin-spin and spin-lattice relaxation times in purified UNCD samples are analyzed.