RADIOTHERMOLUMINESCENCE OF ORGANIC COMPOUNDS

Journal Article · Thu Sep 01 04:00:00 EDT 1960 · Doklady Akad. Nauk S.S.S.R.

OSTI ID:4097570

Nikol'skii, V G; Buben, N Ya

Samples of polyethylene, paraffin, polyisobutylene, teflon, natural and synthetic rubber, and cyclohexane were irradiated with 1.5-Mev electrons at 100 deg K to an integral dose of 10/sup 6/ rad. The irradiated samples were stored in liquid nitrogen, and on warming at 15 degrees per minute, emission of luminescence could be observed with a maximum in intensity at a definite temperature. Thus an intensity maximum was found at -- 120 deg C for high- and low-pressure polyethylene. The high-pressure polyethylene sample showed another emission peak at --40 deg C that was not observed in the low-pressure polyethylene sample. The thermoluminescent emission maxima are associated with the freezing of molecular motion and structural changes in the molecule that can be detected by changes in dielectric properties, heat capacity, specific volume, etc. There is a close correspondence of the maxima in thermoluminescence with structural transitions in these compounds that can be detected by other methods (nuclear resonance, variation of Young's modulus with temperature, etc). Hence radiothermoluminsscence can be a very sensitive method of investigating structural changes in a substance. (TTT)

• Research Organization: Inst. of Physical Chemistry, the Academy of Sciences, USSR
• NSA Number: NSA-15-009576
• OSTI ID: 4097570
• Journal Information: Doklady Akad. Nauk S.S.S.R., Journal Name: Doklady Akad. Nauk S.S.S.R. Vol. Vol: 134
• Country of Publication: Country unknown/Code not available
• Language: Russian

Related Subjects

BUTYLENE
CONFIGURATION
CYCLOALKANES
DETECTION
DIELECTRICS
ELECTRONS
EMISSION
ENERGY
ENERGY RANGE
FLUORINATED HYDROCARBONS
HEXANE
IRRADIATION
LIQUIDS
LOW TEMPERATURE
LUMINESCENCE
MOLECULES
MOTION
NITROGEN
NUCLEI
ORGANIC FLUORINE COMPOUNDS
PARAFFIN
PHYSICS
POLYETHYLENES
POLYMERS
PRESSURE
RADIATION DOSES
RESONANCE
RUBBER
SENSITIVITY
SPECIFIC HEAT
STORAGE
TEFLON
VOLUME