Mechanism of the radiothermoluminescence of polyolefins containing luminophores

Journal Article · Wed May 01 04:00:00 EDT 1985 · Dokl. Phys. Chem. (Engl. Transl.); (United States)

OSTI ID:7128790

Skuratova, N V; Aulov, V A; Filippov, V V; Koritskii, A T; Lednev, I K; Tolkachev, B V

This paper investigates the mechanism of the radiothermoluminescence (RTL) of polymers containing triarylpyrazoline luminophores. The spectral composition of irradiated samples of low-density polyethylene (PE) and PE containing 0.1% weight luminor red (LR) are shown. At low temperatures the luminescence of the initial PE is concentrated chiefly in the spectral range 400-490 nm. When the temperature is raised, the intensity of this band gradually decreases with a simultaneous increase in the luminescence intensity in the range 315-370 nm. It is shown that the RTL intensity of polyolefins can be substantially increased without changing the positions of the maxima on the deexcitation curves, if luminescent additives possessing good sensitivity are introduced into the melt and the reproducibility of the thermal prehistory of the investigated samples is followed.

• Research Organization: Institute of Chemical Physics, Acad. of Sci., Moscow
• OSTI ID: 7128790
• Journal Information: Dokl. Phys. Chem. (Engl. Transl.); (United States), Journal Name: Dokl. Phys. Chem. (Engl. Transl.); (United States) Vol. 279:1-3; ISSN DKPCA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360605 -- Materials-- Radiation Effects
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
400600* -- Radiation Chemistry
ABSORPTION SPECTRA
IRRADIATION
LUMINESCENCE
ORGANIC COMPOUNDS
ORGANIC POLYMERS
PHOSPHORS
PHYSICAL RADIATION EFFECTS
POLYETHYLENES
POLYMERS
POLYOLEFINS
POLYPROPYLENE
RADIATION EFFECTS
RADIOLUMINESCENCE
SPECTRA
TEMPERATURE EFFECTS
THERMOLUMINESCENCE