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Effect of recombination in a high quantum efficiency prototype ionization-chamber-based electronic portal imaging device
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10.1118/1.2750969
/content/aapm/journal/medphys/34/8/10.1118/1.2750969
http://aip.metastore.ingenta.com/content/aapm/journal/medphys/34/8/10.1118/1.2750969

Figures

Image of FIG. 1.
FIG. 1.

The working principle of the KCD is described here. (a) The functional elements of the KCD chamber are indicated. The channel and scan directions are indicated. X rays are incident into the plane of the figure. (b) The mechanism of kinestasis is depicted. A time series of the position of charges in the moving KCD chamber is shown alongside the fixed incident beam.

Image of FIG. 2.
FIG. 2.

The characteristic curve for krypton at . (b) Domain transformation: .

Image of FIG. 3.
FIG. 3.

Recombination fractions for Kr are plotted as a function of electric field intensity for various chamber pressures.

Image of FIG. 4.
FIG. 4.

(a) Measured values are plotted as a function of gas density. (b) Variation of ionic drift velocity with electric field strength is shown. In both graphs solid lines represent linear regression.

Image of FIG. 5.
FIG. 5.

Recombination fractions for Xe are plotted as a function of electric field intensity for various chamber pressures.

Tables

Generic image for table
TABLE I.

Summary of major results

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/content/aapm/journal/medphys/34/8/10.1118/1.2750969
2007-07-16
2014-04-24
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Effect of recombination in a high quantum efficiency prototype ionization-chamber-based electronic portal imaging device
http://aip.metastore.ingenta.com/content/aapm/journal/medphys/34/8/10.1118/1.2750969
10.1118/1.2750969
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