Published August 1978
| Version v1
Journal article
H2-laser photolysis study of the quenching of O2(b1Σg+) by H2 and D2
Creators
- 1. Bochum Univ. (Germany, F.R.). Lehrstuhl fuer Physikalische Chemie
Description
An H2-laser (lambda approximately 160 nm) was used to form etastable O2(b1Σg+) molecules in the photolysis of O2. Monitoring the decay of the O2(b1Σg+ → X3Σg-) emission in the presence of H2 and D2 yields rate constants of kappa(H2) = (8.3 +- 1.2).10-13 and of kappa(D2) = (1.4 +- 0.2).10-14 cm3 s-1 for the respective quenching process at 298 K. Preliminary results indicate similar temperature dependences (approximately 6.2 kJ mol-1 activation energy) for both reactions. (orig.)
Abstract (German)
Ein H2-Laser (lambda approximately 160 nm) wurde benutzt, um in der Photolyse von O2 metastabile O2(b1Σg+)-Molekuele zu erzeugen. Das Verschwinden der metastabilen Molekuele wurde durch die Emission des verbotenen Ueberganges O2(b1Σg+ → X3Σg-) verfolgt. Durch Zugabe von H2 und D2 wurden die Loeschgeschwindigkeitskonstanten kappa(H2) und kappa(D2) bei 298 K zu (8.3 +- 1.2).10-13 bzw. zu (1.4 +- 0.2).10-14 cm3 s-1 bestimmt. Vorversuche zeigen fuer beide Reaktionen eine aehnliche Temperaturabhaengigkeit (Aktivierungsenergie ca. 6.2 kJ mol-1). (orig.)Additional details
Publishing Information
- Journal Title
- Ber. Bunsenges. Phys. Chem.
- Journal Volume
- 82
- Journal Issue
- 8
- Series
- Ber. Bunsenges. Phys. Chem.
- Journal Page Range
- 828-833
INIS
- Country of Publication
- Germany
- Country of Input or Organization
- Germany
- INIS RN
- 10440458
- Subject category
- S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; S38: RADIATION CHEMISTRY, RADIOCHEMISTRY AND NUCLEAR CHEMISTRY;
- Descriptors DEI
- DEUTERIUM; ELECTRONIC STRUCTURE; ENERGY TRANSFER; HYDROGEN; ISOTOPE EFFECTS; LASER RADIATION; OXYGEN; PHOTOLYSIS; PULSED IRRADIATION; TEMPERATURE DEPENDENCE
- Descriptors DEC
- CHEMICAL REACTIONS; DECOMPOSITION; ELECTROMAGNETIC RADIATION; ELEMENTS; HYDROGEN ISOTOPES; IRRADIATION; ISOTOPES; LIGHT NUCLEI; NONMETALS; NUCLEI; ODD-ODD NUCLEI; RADIATIONS; STABLE ISOTOPES