Color indicator-dosimeter of ionizing radiation

Patent · Tue Jan 04 04:00:00 EST 1977

OSTI ID:7305160

Panchenkov, G M; Kozlov, L L; Molin, A A; Ershova, Z F; Mikhailov, L M; Juzvyak, A G; Valitov, R B; Churov, V P; Grinev, M P

The color indicator-dosimeter of ionizing radiation in accordance with the invention comprises 70 to 100 parts by weight of a thermoplastic polymer, 10 to 40 parts by weight of a plasticizer, 0.5 to 3.0 parts by weight of a stabilizer and two dyes compatible with said polymer. One of said dyes is incorporated in the color indicator-dosimeter to the extent of from 0.007 to 0.01 part by weight; its G value of decolorization in the polymer is 0.05 to 0.1 molecule/100 eV and its absorption maximum lies in the 450 to 590 nm spectral range. The other of said two dyes is incorporated in the color indicator-dosimeter to the extent of from 0.015 to 0.03 part by weight; its G value of decolorization in the polymer is 0.15 to 1.5 molecule/100 eV and its absorption maximum lies in the 600 to 720 nm spectral range. The proposed color indicator-dosimeter of ionizing radiation permits measuring dose rates in the range from 0.5 x 10/sup 6/ to 3.5 x 10/sup 7/ rad to within +-25 to 30 percent visually and to within +-15 to 20 percent objectively. The proposed color indicator-dosimeter of ionizing radiation is not responsive to light; its color does not change after irradiation for at least 12 months. 3 claims.

• Assignee: TIC; EDB-77-083350; ERA-02-036041
• Patent Number(s): US 4001587
• OSTI ID: 7305160
• Country of Publication: United States
• Language: English

Related Subjects

440102* -- Radiation Instrumentation-- Radiation Dosemeters
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
CHEMICAL PREPARATION
COLORIMETRIC DOSEMETERS
DOSE RATES
DOSEMETERS
DYES
G VALUE
MEASURING INSTRUMENTS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
PETROCHEMICALS
PETROLEUM PRODUCTS
PLASTICIZERS
PLASTICS
POLYMERS
SYNTHESIS
THERMOPLASTICS