Direct evidence for the tunneling reaction HD + D. -->. H + D/sub 2/ in the radiolysis of a D/sub 2/-HD mixture at 4. 2 K
Conference
·
· J. Phys. Chem.; (United States)
OSTI ID:6035387
When a D/sub 2/-HD (15.6 mol %) mixture is ..gamma..-irradiated at 4.2 K, D and H atoms are produced and can be measured by ESR spectroscopy. ESR measurement has been performed at the very low microwave power level of 10/sup -3/ ..mu..W which does not result in saturation of the signals from the hydrogen atoms. The amounts of H atoms increase gradually upon storage of the irradiated samples at 4.2 K, while the amounts of D atoms decrease complimentarily. The result indicates clearly the occurrence of the HD + D ..-->.. H + D/sub 2/ reaction, caused by quantum mechanical tunneling. Since the decrease in D-atom yields upon storage of the irradiated sample is larger than the increase in H-atom yields, some of the D atoms recombine with other D or H atoms. 7 references, 2 figures.
- Research Organization:
- Nagoya Univ., Japan
- OSTI ID:
- 6035387
- Conference Information:
- Journal Name: J. Phys. Chem.; (United States) Journal Volume: 90:3
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
400600* -- Radiation Chemistry
CHEMICAL RADIATION EFFECTS
CHEMICAL REACTIONS
CHEMISTRY
DATA
DECOMPOSITION
DEUTERIDES
DEUTERIUM
DEUTERIUM COMPOUNDS
ELECTROMAGNETIC RADIATION
ELECTRON SPIN RESONANCE
ELEMENTS
ENERGY
EXPERIMENTAL DATA
GAMMA RADIATION
HYDROGEN
HYDROGEN COMPOUNDS
HYDROGEN DEUTERIDE
HYDROGEN ISOTOPES
INFORMATION
IONIZING RADIATIONS
ISOTOPES
LIGHT NUCLEI
MAGNETIC RESONANCE
MEETINGS
MICROWAVE RADIATION
NONMETALS
NUCLEI
NUMERICAL DATA
ODD-ODD NUCLEI
POTENTIAL ENERGY
QUANTITY RATIO
RADIATION CHEMISTRY
RADIATION EFFECTS
RADIATIONS
RADIOLYSIS
RESONANCE
STABLE ISOTOPES
TIME DEPENDENCE
ULTRALOW TEMPERATURE
400600* -- Radiation Chemistry
CHEMICAL RADIATION EFFECTS
CHEMICAL REACTIONS
CHEMISTRY
DATA
DECOMPOSITION
DEUTERIDES
DEUTERIUM
DEUTERIUM COMPOUNDS
ELECTROMAGNETIC RADIATION
ELECTRON SPIN RESONANCE
ELEMENTS
ENERGY
EXPERIMENTAL DATA
GAMMA RADIATION
HYDROGEN
HYDROGEN COMPOUNDS
HYDROGEN DEUTERIDE
HYDROGEN ISOTOPES
INFORMATION
IONIZING RADIATIONS
ISOTOPES
LIGHT NUCLEI
MAGNETIC RESONANCE
MEETINGS
MICROWAVE RADIATION
NONMETALS
NUCLEI
NUMERICAL DATA
ODD-ODD NUCLEI
POTENTIAL ENERGY
QUANTITY RATIO
RADIATION CHEMISTRY
RADIATION EFFECTS
RADIATIONS
RADIOLYSIS
RESONANCE
STABLE ISOTOPES
TIME DEPENDENCE
ULTRALOW TEMPERATURE