Low temperature inversion of optically detected electron spin resonance spectra due to different rates of electron tunneling for singlet and triplet radical–ion pairs

1994 ◽  
Vol 100 (5) ◽  
pp. 3476-3496 ◽  
Author(s):  
A. B. Doktorov ◽  
O. B. Spirina ◽  
Yu. N. Molin
Keyword(s):  
Electron Spin Resonance ◽  
Low Temperature ◽  
Electron Spin ◽  
Electron Tunneling ◽  
Ion Pairs ◽  
Temperature Inversion ◽  
Spin Resonance ◽  
Optically Detected

Applications of ESR to Carbonaceous Materials

1982 ◽  
Vol 36 (1) ◽  
pp. 52-57 ◽  
Author(s):  
L. S. Singer ◽  
I. C. Lewis
Keyword(s):  
Free Radicals ◽  
Electron Spin Resonance ◽  
Low Temperature ◽  
Electron Spin ◽  
Paramagnetic Species ◽  
Carbonaceous Materials ◽  
Conduction Electrons ◽  
Spin Resonance ◽  
Higher Temperature ◽  
Low Temperature Pyrolysis

The applications of electron spin resonance (ESR) to carbonaceous materials are reviewed. The stable paramagnetic species observed in the products of low-temperature pyrolysis are odd-alternate neutral free radicals, whereas the unpaired spins of higher temperature carbons and graphites are primarily conduction electrons. The variety of ESR properties and phenomena requires special attention to techniques of measurement and interpretations of results. The relevance to the carbonization process of the free radicals observed by ESR is also discussed.

Electron spin resonance observations of photochemically generated contact ammonium ion-pairs of fluoro-substituted ketones

1979 ◽  
Vol 57 (5) ◽  
pp. 600-602 ◽  
Author(s):  
K. S. Chen ◽  
T. Foster ◽  
J. K. S. Wan
Keyword(s):  
Electron Spin Resonance ◽  
Electron Spin ◽  
Ion Pairs ◽  
Esr Spectra ◽  
Ammonium Ion ◽  
Spin Resonance ◽  
Photochemical Systems

Contact radical ion-pairs of ammonium and fluoro-substituted ketones were generated in photochemical systems and their here-to-fore elusive esr spectra were characterized.

Paramagnetic resonance and optical absorption of trapped holes and electrons in irradiated KCI: Ag

1963 ◽  
Vol 271 (1345) ◽  
pp. 243-267 ◽  
Keyword(s):  
Electron Spin Resonance ◽  
Low Temperature ◽  
Optical Absorption ◽  
Electron Spin ◽  
Optical Absorption Spectra ◽  
Paramagnetic Resonance ◽  
Spin Resonance ◽  
Impurity Ions ◽  
Temperature Irradiation ◽  
Positive Holes

The electron spin resonance and optical absorption spectra of crystals of KCl containing silver impurity ions were examined after the crystals had been X -irradiated at 77 °K. It is shown that the silver impurity ions act as traps for both electrons and positive holes. A description is given of the annealing behaviour of the crystals after low-temperature irradiation.

Identification of the neutralV4+impurity in cubic 3C-SiC by electron-spin resonance and optically detected magnetic resonance

1994 ◽  
Vol 50 (24) ◽  
pp. 18034-18039 ◽  
Author(s):  
K. F. Dombrowski ◽  
U. Kaufmann ◽  
M. Kunzer ◽  
K. Maier ◽  
J. Schneider ◽  
...  
Keyword(s):  
Electron Spin Resonance ◽  
Magnetic Resonance ◽  
Electron Spin ◽  
Spin Resonance ◽  
Optically Detected Magnetic Resonance ◽  
Optically Detected
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