ESR STUDIES ON REACTIVITY OF HO2 RADICALS IN POLYCRYSTALLINE ICE - NONMONOTONIC CHANGES OF DISPROPORTIONATION RATE IN THE TEMPERATURE-RANGE100-200-K

Authors
BEDNAREK J PLONKA A
Citation
J. Bednarek et A. Plonka, ESR STUDIES ON REACTIVITY OF HO2 RADICALS IN POLYCRYSTALLINE ICE - NONMONOTONIC CHANGES OF DISPROPORTIONATION RATE IN THE TEMPERATURE-RANGE100-200-K, Radiation physics and chemistry, 44(5), 1994, pp. 485-489
Citations number
8
Categorie Soggetti
Nuclear Sciences & Tecnology","Chemistry Physical","Physics, Atomic, Molecular & Chemical
Journal title
Radiation physics and chemistry → ACNP
ISSN journal
0969806X
Volume
44
Issue
5
Year of publication
1994
Pages
485 - 489
Database
ISI
SICI code
0969-806X(1994)44:5<485:ESOROH>2.0.ZU;2-U
Abstract
The kinetics of HO2 radicals in UV-irradiated frozen dilute solutions of H2O2 were followed by the ESR technique. Radical disproportionation s at the irradiation temperature were found to be adequately described in terms of dispersive kinetics by a second-order equal-concentration kinetic equation with rate parameters changing non-monotonically in t he temperature range 100-200 K. These changes are thought to occur due to well separated structural relaxation regions of polycrystalline ic e in the above temperature range.