Optical recording of the ESR spectra of short-lived radical-ion pairs by synchronous detection using x-ray irradiation

Journal Article · Thu Apr 01 04:00:00 EST 1982 · Dokl. Phys. Chem. (Engl. Transl.); (United States)

OSTI ID:7082335

Anisimov, O A; Grigoryants, V M; Korsunskii, V I; Melekhov, V I; Molin, Yu N

The optical detection method was used to take the ESR spectra of the (durene)/sup +//(deuteroanthracene)/sup -/ and (triethylamine)/sup +//(deuteroanthracene)/sup -/ radical-ion pairs. Such pairs arise in the irradiation of solutions containing 0.001 M deuteroanthracene (A) and 0.01 M durene (D) or triethylamine (TEA) in squalane (S). In this experiment, the optical detection unit is an attachment to a standard ESR spectrometer consisting of a source of ionizing radiation and photomultiplier activated instead of the ultrahigh-frequency detector of the spectrometer. The system used a BSV-23 x-ray tube with a molybdenum anode as the radiation source. The tube axis was parallel to the magnet axis. The exit window of the tube was 160 mm from the surface of the sample located in a quartz diameter with 11.5 mm diameter in the center of the probe of a Varian E-3 ESR spectrometer. The cell was covered with a cup-like teflon stopper to keep atmospheric oxygen from the sample. The stopper contacted the sample surface. The x-ray radiation hit the sample after passing through a 0.5-mm-thick Teflon layer. The irradiated sample surface was 0.5 cm/sup 2/ in area. A quartz light conductor 9 mm in diameter and 0.5 m in length was attached to the lower edge of the cell. This device was used to conduct light from the sample to an FEU-130 photomultiplier in a Permalloy screen. The signal was transferred from the photomultiplier anode to the inlet of the synchronous detection block of the E-3 ESR spectrometer.

• Research Organization: Academy of Sciences of the USSR, Novosibirsk
• OSTI ID: 7082335
• Journal Information: Dokl. Phys. Chem. (Engl. Transl.); (United States), Journal Name: Dokl. Phys. Chem. (Engl. Transl.); (United States) Vol. 260:4-6; ISSN DKPCA
• Country of Publication: United States
• Language: English

Related Subjects

38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
400600* -- Radiation Chemistry
AMINES
ANTHRACENE
AROMATICS
CHARGED PARTICLES
CHEMICAL RADIATION EFFECTS
CHEMICAL REACTIONS
CHEMISTRY
CONDENSED AROMATICS
DATA
DECOMPOSITION
DEUTERATION
DURENE
ELECTROMAGNETIC RADIATION
ELECTRON SPIN RESONANCE
EQUIPMENT
EXPERIMENTAL DATA
HYDROCARBONS
HYPERFINE STRUCTURE
INFORMATION
IONIZING RADIATIONS
IONS
MAGNETIC RESONANCE
NUMERICAL DATA
OPTICAL EQUIPMENT
ORGANIC COMPOUNDS
ORGANIC SOLVENTS
POLYENES
RADIATION CHEMISTRY
RADIATION EFFECTS
RADIATIONS
RADICALS
RADIOLYSIS
RESONANCE
SOLVENTS
SPECTRA
SQUALENE
TERPENES
X RADIATION