ESR kinetics study of the decay of low-temperature radicals in glycine and. beta. -alanine
Journal Article
·
· J. Chem. Phys.; (United States)
OSTI ID:6674673
Monocrystals of glycine and ..beta..-alanine have been observed by electron spin resonance (ESR) after x-irradiation near 77 /sup 0/K. The rate constants of the decay of one signal in each have been determined over the ranges 127 /sup 0/--148 /sup 0/K and 98 /sup 0/--188 /sup 0/K, respectively. Both obey first-order kinetics with activation energies of approx.7.0 and approx.2.6 kcal/mole, respectively, and pre-exponential factors of 6.4 x 10/sup 8/ and 15 Hz, respectively.
- Research Organization:
- Department of Physics and Astronomy, University of South Carolina, Columbia, South Carolina 29208
- OSTI ID:
- 6674673
- Journal Information:
- J. Chem. Phys.; (United States), Vol. 74:2
- Country of Publication:
- United States
- Language:
- English
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OSTI ID:6674673
Related Subjects
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
ALANINE-BETA
ELECTRON SPIN RESONANCE
RADIOLYSIS
GLYCINE
CHEMICAL REACTION KINETICS
LOW TEMPERATURE
MONOCRYSTALS
RADICALS
VERY LOW TEMPERATURE
X RADIATION
ALANINES
AMINO ACIDS
CARBOXYLIC ACIDS
CHEMICAL RADIATION EFFECTS
CHEMICAL REACTIONS
CHEMISTRY
CRYSTALS
DECOMPOSITION
ELECTROMAGNETIC RADIATION
IONIZING RADIATIONS
KINETICS
MAGNETIC RESONANCE
ORGANIC ACIDS
ORGANIC COMPOUNDS
RADIATION CHEMISTRY
RADIATION EFFECTS
RADIATIONS
REACTION KINETICS
RESONANCE
400600* - Radiation Chemistry
ALANINE-BETA
ELECTRON SPIN RESONANCE
RADIOLYSIS
GLYCINE
CHEMICAL REACTION KINETICS
LOW TEMPERATURE
MONOCRYSTALS
RADICALS
VERY LOW TEMPERATURE
X RADIATION
ALANINES
AMINO ACIDS
CARBOXYLIC ACIDS
CHEMICAL RADIATION EFFECTS
CHEMICAL REACTIONS
CHEMISTRY
CRYSTALS
DECOMPOSITION
ELECTROMAGNETIC RADIATION
IONIZING RADIATIONS
KINETICS
MAGNETIC RESONANCE
ORGANIC ACIDS
ORGANIC COMPOUNDS
RADIATION CHEMISTRY
RADIATION EFFECTS
RADIATIONS
REACTION KINETICS
RESONANCE
400600* - Radiation Chemistry