Superhyperfine structure of the ESR spectra of Gd3+ impurity ions in LiYF4 double fluoride

2017 ◽  
Vol 59 (3) ◽  
pp. 564-568 ◽  
Author(s):  
L. K. Aminov ◽  
M. R. Gafurov ◽  
S. L. Korableva ◽  
I. N. Kurkin ◽  
A. A. Rodionov
Keyword(s):  
Esr Spectra ◽  
Superhyperfine Structure ◽  
Impurity Ions

Observation of superhyperfine structure in the ESR spectra of two tetragonal Fe centers in KTaO3 and a new model for the center

1997 ◽  
Vol 39 (4) ◽  
pp. 547-549 ◽  
Author(s):  
V. É. Bursian ◽  
V. S. Vikhnin ◽  
L. S. Sochava ◽  
S. Kapphan ◽  
H. Hesse
Keyword(s):  
Esr Spectra ◽  
New Model ◽  
Superhyperfine Structure

Superhyperfine structure of the EPR spectra of impurity ions in the LiYF4 : Nd3+ system doped by 143Nd isotopes

2015 ◽  
Vol 57 (12) ◽  
pp. 2400-2403 ◽  
Author(s):  
L. K. Aminov ◽  
M. R. Gafurov ◽  
S. L. Korableva ◽  
I. N. Kurkin ◽  
A. A. Rodionov
Keyword(s):  
Epr Spectra ◽  
Superhyperfine Structure ◽  
Impurity Ions

Superhyperfine Structure of the EPR Spectra of Nd3+ Impurity Ions in Fluorite CaF2

2018 ◽  
Vol 60 (5) ◽  
pp. 912-915
Author(s):  
L. K. Aminov ◽  
M. R. Gafurov ◽  
I. N. Kurkin ◽  
B. Z. Malkin ◽  
A. A. Rodionov
Keyword(s):  
Epr Spectra ◽  
Superhyperfine Structure ◽  
Impurity Ions

Kinetics of the Thermal Disappearance of Radicals Formed During the Radiolysis of Aspartic Acid

2009 ◽  
Vol 59 (12) ◽  
Author(s):  
Mihai Contineanu ◽  
iulia Contineanu ◽  
Ana Neacsu ◽  
Stefan Perisanu
Keyword(s):  
Thermal Resistance ◽  
Aspartic Acid ◽  
Room Temperature ◽  
Esr Spectra ◽  
Complex Mechanism ◽  
Radical Species ◽  
Mechanisms Of Formation ◽  
Kinetics Of

The radiolysis of the isomers L-, D- and DL- of the aspartic acid, in solid polycrystalline state, was investigated at room temperature. The analysis of their ESR spectra indicated the formation of at least two radicalic entities. The radical, identified as R3, resulting from the deamination of the acid, exhibits the highest concentration and thermal resistance. Possible mechanisms of formation of three radical species are suggested, based also on literature data. The kinetics of the disappearance of radical R3 indicated a complex mechanism. Three possible variants were suggested for this mechanism.

Photolytic and thermal annealing of radical anions gamma-irradiated monocarboxylic acids

1979 ◽  
Vol 44 (12) ◽  
pp. 3632-3643 ◽  
Author(s):  
Karel Mach ◽  
Igor Janovský ◽  
Karel Vacek
Keyword(s):  
Thermal Annealing ◽  
Pivalic Acid ◽  
Esr Spectra ◽  
Paramagnetic Species ◽  
Radical Anions ◽  
Γ Irradiation ◽  
Before And After ◽  
Optical Bleaching ◽  
The Difference ◽  
Gamma Irradiated

Total yields of paramagnetic species, their optical bleaching and thermal annealing in acetic, propionic, a-butyric, isobutyric, and pivalic acid γ-irradiated at 77 K were followed by ESR spectroscopy. Radical anions, always found after irradiation, disappear during optical bleaching without formation of any paramagnetic product. During thermal annealing they are converted almost quantitatively into the α-radicals of the respective acid, with the exception of pivalic acid. Amounts of radical anions were estimated from the difference of integrated ESR spectra taken before and after optical bleaching. The results show that approximately equal amounts of the reduction and oxidation paramagnetic products of the γ-irradiation can be detected.

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