Formation of complex defects involving molecular oxygen by electron-hole reactions in x-irradiated KClO/sub 4/ and KBrO/sub 4/, studied by ESR and IR spectroscopy

Journal Article · Fri Mar 01 04:00:00 EST 1985 · J. Chem. Phys.; (United States)

OSTI ID:6105844

Bjerre, N; Byberg, J R

Complex defects of composition (XO/sup -//sub 2/, O/sub 2/), X = Cl, Br, produced by UV or x-irradiation of solid KClO/sub 4/ and KBrO/sub 4/ at 26 K are characterized by ESR and IR spectroscopy. (XO/sup -//sub 2/, O/sub 2/) is shown to arise during x-irradiation in a reaction between self-trapped electrons in the form of XO/sup 2 -//sub 4/ defects, and self-trapped holes in the form of (XO/sub 4/)/sup -//sub 2/ defects. The previously described hole defect (XO/sub 2/, O/sub 2/) is shown to arise from oxidation of (XO/sup -//sub 2/, O/sub 2/) by reaction with (XO/sub 4/)/sup -//sub 2/. Thus all the abundant defects observed in x-irradiated KClO/sub 4/ and KBrO/sub 4/ stem from self-trapping of electrons and holes and from simple reactions of the self-trapped electrons and holes. The observed equivalence of optical excitation of the anions with electron-hole recombination may be a general property of polyatomic solids.

• Research Organization: Department of Chemistry, Aarhus University, DK-8000 Aarhus C, Denmark
• OSTI ID: 6105844
• Journal Information: J. Chem. Phys.; (United States), Journal Name: J. Chem. Phys.; (United States) Vol. 82:5; ISSN JCPSA
• Country of Publication: United States
• Language: English

Related Subjects

38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
400600* -- Radiation Chemistry
ALKALI METAL COMPOUNDS
BROMATES
BROMINE COMPOUNDS
CHEMICAL RADIATION EFFECTS
CHEMICAL REACTIONS
CHEMISTRY
CHLORATES
CHLORINE COMPOUNDS
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
DECOMPOSITION
ELECTROMAGNETIC RADIATION
ELECTRON SPIN RESONANCE
ELECTRON-HOLE COUPLING
ELECTRONS
ELEMENTARY PARTICLES
FERMIONS
HALOGEN COMPOUNDS
INFRARED SPECTRA
IONIZING RADIATIONS
LEPTONS
MAGNETIC RESONANCE
OXYGEN COMPOUNDS
POTASSIUM COMPOUNDS
RADIATION CHEMISTRY
RADIATION EFFECTS
RADIATIONS
RADIOLYSIS
RESONANCE
SPECTRA
TRAPPED ELECTRONS
VERY LOW TEMPERATURE
X RADIATION