Compton effect thermally activated depolarization dosimeter

Patent · Tue Apr 04 00:00:00 EST 1978

OSTI ID:6456507

Moran, P R

A dosimetry technique for high-energy gamma radiation or x-radiation employs the Compton effect in conjunction with radiation-induced thermally activated depolarization. A dielectric material is disposed between two electrodes which are electrically short circuited to produce a dosimeter which is then exposed to the gamma or x radiation. The gamma or x-radiation impinging on the dosimeter interacts with the dielectric material directly or with the metal composing the electrode to produce Compton electrons which are emitted preferentially in the direction in which the radiation was traveling. A portion of these electrons becomes trapped in the dielectric material, consequently inducing a stable electricl polarization in the dielectric material. Subsequent heating of the exposed dosimeter to the point of onset of ionic conductivity with the electrodes still shorted through an ammeter causes the dielectric material to depolarize, and the depolarization signal so emitted can be measured. It is proportional to the dose of radiation received by the dosimeter.

• Assignee: Dept. of Energy
• Patent Number(s): US 4082951
• Application Number: TRN: 79-008031
• OSTI ID: 6456507
• Resource Relation: Patent File Date: Filed date 23 Jul 1975; Other Information: PAT-APPL-598,276
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
COMPTON DIODE DETECTORS
DESIGN
ALUMINIUM FLUORIDES
CALCIUM FLUORIDES
COMPTON EFFECT
DEPOLARIZATION
DIELECTRIC MATERIALS
DOSEMETERS
ELECTRODES
ELECTRONS
GAMMA DETECTION
GAMMA RADIATION
HEATING
LITHIUM FLUORIDES
MAGNESIUM FLUORIDES
STRONTIUM FLUORIDES
TRAPPING
X RADIATION
X-RAY DETECTION
ALKALI METAL COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
ALUMINIUM COMPOUNDS
BASIC INTERACTIONS
CALCIUM COMPOUNDS
CALCIUM HALIDES
DETECTION
ELASTIC SCATTERING
ELECTROMAGNETIC INTERACTIONS
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
FERMIONS
FLUORIDES
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
INTERACTIONS
IONIZING RADIATIONS
LEPTONS
LITHIUM COMPOUNDS
LITHIUM HALIDES
MAGNESIUM COMPOUNDS
MEASURING INSTRUMENTS
RADIATION DETECTION
RADIATION DETECTORS
RADIATIONS
SCATTERING
STRONTIUM COMPOUNDS
440102* - Radiation Instrumentation- Radiation Dosemeters