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ENDOR in field-frequency space: orientation, species and quantum state selection

Henk Vrielinck UGent, Frank Loncke UGent, Mihaela Adeluta Tarpan UGent, Hendrik De Cooman UGent, Dmitry Zverev UGent and Freddy Callens UGent (2009) Abstracts 42nd Annual Meeting of the Electron Spin Resonance group of the Royal Society of Chemistry.
abstract
Due to its specific detection method, via saturation of the EPR spectrum at a certain magnetic field position, ENDOR measurements are highly selective. Already in the late sixties Rist and Hyde recognized the possibilities of obtaining angular dependent information from powder specimens by recording the field-dependence of the ENDOR spectrum, by grace of the orientation selection principle.1 However, also for single crystal samples it makes sense to record ENDOR spectra in the two-dimensional field-frequency space (FF-ENDOR). Next to orientation selectivity – when several symmetry-related orientations of the same paramagnetic species are simultaneously detected in the EPR spectrum – such measurements feature species selectivity and, for systems with S > ½ and/or I > ½, also quantum state selectivity. The former facilitates the interpretation of multi- composite EPR spectra, as illustrated in the figure below. Quantum state selectivity offers possibilities of determining the relative signs of spin Hamiltonian parameters, e.g. zero-field splitting and hyperfine, or hyperfine and quadrupole principal values. All these effects will be illustrated through recent examples in or research of radiation-induced radicals in sugars and high-spin transition ion or rare-earth doped fluoride crystals.
Please use this url to cite or link to this publication:
author
organization
year
type
conference
publication status
published
subject
in
Abstracts 42nd Annual Meeting of the Electron Spin Resonance group of the Royal Society of Chemistry
conference name
42nd Annual Meeting of the Electron Spin Resonance group of the Royal Society of Chemistry
conference location
Norwich, United Kingdom
conference start
2009-04-19
conference end
2009-04-23
language
English
UGent publication?
yes
classification
C3
id
765699
handle
http://hdl.handle.net/1854/LU-765699
date created
2009-10-20 09:12:31
date last changed
2009-11-09 11:24:06
@inproceedings{765699,
  abstract     = {Due to its specific detection method, via saturation of the EPR spectrum at a certain magnetic field position, ENDOR measurements are highly selective. Already in the late sixties Rist and Hyde recognized the possibilities of obtaining angular dependent information from powder specimens by recording the field-dependence of the ENDOR spectrum, by grace of the orientation selection principle.1 However, also for single crystal samples it makes sense to record ENDOR spectra in the two-dimensional field-frequency space (FF-ENDOR). Next to orientation selectivity -- when several symmetry-related orientations of the same paramagnetic species are simultaneously detected in the EPR spectrum -- such measurements feature species selectivity and, for systems with S {\textrangle} {\textonehalf} and/or I {\textrangle} {\textonehalf}, also quantum state selectivity. The former facilitates the interpretation of multi- composite EPR spectra, as illustrated in the figure below. Quantum state selectivity offers possibilities of determining the relative signs of spin Hamiltonian parameters, e.g. zero-field splitting and hyperfine, or hyperfine and quadrupole principal values. All these effects will be illustrated through recent examples in or research of radiation-induced radicals in sugars and high-spin transition ion or rare-earth doped fluoride crystals.},
  author       = {Vrielinck, Henk and Loncke, Frank and Tarpan, Mihaela Adeluta and De Cooman, Hendrik and Zverev, Dmitry and Callens, Freddy},
  booktitle    = {Abstracts 42nd Annual Meeting of the Electron Spin Resonance group of the Royal Society of Chemistry},
  language     = {eng},
  location     = {Norwich, United Kingdom},
  title        = {ENDOR in field-frequency space: orientation, species and quantum state selection},
  year         = {2009},
}

Chicago
Vrielinck, Henk, Frank Loncke, Mihaela Adeluta Tarpan, Hendrik De Cooman, Dmitry Zverev, and Freddy Callens. 2009. “ENDOR in Field-frequency Space: Orientation, Species and Quantum State Selection.” In Abstracts 42nd Annual Meeting of the Electron Spin Resonance Group of the Royal Society of Chemistry.
APA
Vrielinck, H., Loncke, F., Tarpan, M. A., De Cooman, H., Zverev, D., & Callens, F. (2009). ENDOR in field-frequency space: orientation, species and quantum state selection. Abstracts 42nd Annual Meeting of the Electron Spin Resonance group of the Royal Society of Chemistry. Presented at the 42nd Annual Meeting of the Electron Spin Resonance group of the Royal Society of Chemistry.
Vancouver
1.
Vrielinck H, Loncke F, Tarpan MA, De Cooman H, Zverev D, Callens F. ENDOR in field-frequency space: orientation, species and quantum state selection. Abstracts 42nd Annual Meeting of the Electron Spin Resonance group of the Royal Society of Chemistry. 2009.
MLA
Vrielinck, Henk, Frank Loncke, Mihaela Adeluta Tarpan, et al. “ENDOR in Field-frequency Space: Orientation, Species and Quantum State Selection.” Abstracts 42nd Annual Meeting of the Electron Spin Resonance Group of the Royal Society of Chemistry. 2009. Print.