Compton effect thermally activated depolarization dosimeter

Moran, Paul R

Title: Compton effect thermally activated depolarization dosimeter

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Abstract

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.

Inventors:

Moran, Paul R ^[1]

Madison, WI

Publication Date:: Sun Jan 01 00:00:00 EST 1978

Research Org.:: Univ. of Wisconsin, Madison, WI (United States)

OSTI Identifier:: 863047

Patent Number(s):: US 4082951

Assignee:: United States of America as represented by United States (Washington, DC)

DOE Contract Number:: AT(11-1)-1105

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: 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; /250/

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                    Moran, Paul R. Compton effect thermally activated depolarization dosimeter.  United States: N. p., 1978. 
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                    Moran, Paul R. Compton effect thermally activated depolarization dosimeter.  United States.

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                    Moran, Paul R. 1978.  
        "Compton effect thermally activated depolarization dosimeter".  United States.  https://www.osti.gov/servlets/purl/863047.

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@article{osti_863047,

  title        = {Compton effect thermally activated depolarization dosimeter},

  author       = {Moran, Paul R},

  abstractNote = {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.},

  doi          = {},

  url          = {https://www.osti.gov/biblio/863047},
  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {Sun Jan 01 00:00:00 EST 1978},

  month        = {Sun Jan 01 00:00:00 EST 1978}

}

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