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Dose response of selected ion chambers in applied homogeneous transverse and longitudinal magnetic fields
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10.1118/1.4794496
/content/aapm/journal/medphys/40/4/10.1118/1.4794496
http://aip.metastore.ingenta.com/content/aapm/journal/medphys/40/4/10.1118/1.4794496

Figures

Image of FIG. 1.
FIG. 1.

Various geometrical orientations for ion chamber's long axis (central cylinder), magnetic field (arrow), and radiation beam (transparent rectangular prism) as used in Monte Carlo simulation and experimental measurements.

Image of FIG. 2.
FIG. 2.

NE2571 relative dose deposited as a function of magnetic field in orientations I–IV as determined in Monte Carlo simulations, and orientations I and II as determined in the measurements previously published by Meijsing et al. (Ref. 10 ). Please note the simulation data points in orientations III and IV nearly lie on top of each other.

Image of FIG. 3.
FIG. 3.

PR06C relative dose deposited as a function of magnetic field in orientations I–IV for simulations, and orientations I and II for measurements.

Tables

Generic image for table
TABLE I.

Simulation geometrical setup and PENELOPE simulation parameters for the two chambers.

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TABLE II.

Chamber kQ values without the magnetic field are compared with the previously published results. Errors quoted are 1 standard deviation.

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TABLE III.

Ratio of readings with the magnetic field indicated to no magnetic field as a function of field size. All measured values are ±0.0015.

Generic image for table
TABLE IV.

P pol and P ion values as a function of magnetic field. Calculation formalism used as per column reference. All values are ±0.002.

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/content/aapm/journal/medphys/40/4/10.1118/1.4794496
2013-03-15
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Dose response of selected ion chambers in applied homogeneous transverse and longitudinal magnetic fields
http://aip.metastore.ingenta.com/content/aapm/journal/medphys/40/4/10.1118/1.4794496
10.1118/1.4794496
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