Compton effect thermally activated depolarization dosimeter

Patent · Sun Jan 01 00:00:00 EST 1978

OSTI ID:863047

Moran, Paul R ^[1]

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1. Madison, WI

A dosimetry technique for high-energy gamma radiation or X-radiation employs the Compton effect in conjunction with radiation-induced thermally activated depolarization phenomena. 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 electrical 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 and is proportional to the dose of radiation received by the dosimeter.

• Research Organization: Univ. of Wisconsin, Madison, WI (United States)
• DOE Contract Number: AT(11-1)-1105
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4082951
• OSTI ID: 863047
• Country of Publication: United States
• Language: English

Related Subjects

compton
effect
thermally
activated
depolarization
dosimeter
dosimetry
technique
high-energy
gamma
radiation
x-radiation
employs
conjunction
radiation-induced
phenomena
dielectric
material
disposed
electrodes
electrically
circuited
produce
exposed
impinging
interacts
directly
metal
composing
electrode
electrons
emitted
preferentially
direction
traveling
portion
trapped
consequently
inducing
stable
electrical
polarization
subsequent
heating
onset
ionic
conductivity
shorted
ammeter
causes
depolarize
signal
measured
proportional
dose
received
subsequent heat
thermally activated
ionic conductivity
gamma radiation
dielectric material
radiation impinging
radiation received
polarization phenomena
compton effect
energy gamma
activated depolarization
material directly
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