Parallel Plate Chambers

Exradin Parallel Plate Chambers ensure precision in depth-dose measurements by providing uniform field lines even at low energies.

The Exradin Advantage

  • Exceptionally wide guard rings exceed 3mm widths recommended in TG-39.
  • Rigid stem allows accurate positioning of chamber.
  • Chamber vents through a flexible tube sealed to the chamber body, ideal for use in water or plastic phantoms.

Products

Exradin A10 Ion Chamber

The A10 chamber provides excellent spatial resolution for dose distribution measurements in a water phantom. An acrylic waterproof cap is included with this chamber for use in TG-51 electron beam protocols.

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Exradin A11 Ion Chamber

Waterproof A11 chamber may be operated while fully submerged without any protective sheath; ideal for repeated TG-51/TRS-398 dose distribution measurements in a water phantom.

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Exradin A11TW Ion Chamber

The A11TW is tailored for use in superficial therapy and low energy diagnostic beams. The thin-window design provides nearly constant response over the entire diagnostic energy range.

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Exradin Magna A600 Ion Chamber

The 1cc A600 chamber is designed for consistent air kerma, absorbed dose and exposure measurements. Vented and fully-guarded, this chamber is perfectly suited for mammography and general diagnostic x-ray regions.

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Exradin Magna A650 Ion Chamber

The 3cc A650 chamber is a vented and fully guarded ion chamber for use in general diagnostic energy x-ray regions.

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Exradin A20 Ion Chamber

The A20 is a low-energy x-ray chamber for assessing and calibrating pinpoint radiation fields for x-rays, stereotactic and TG-61 compliant superficial skin therapy.

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Specifications

Exradin A10 Exradin A11 Exradin A11TW Exradin A20 Exradin Magna A600 Exradin Magna A650
Collecting Volume 0.050 cm3 0.62 cm3 0.93 cm3 0.074 cm3 1.50 cm3 3.46 cm3
Centroid of Collecting Volume* 1.0 mm 2.0 mm 1.5 mm 1.8 mm 4.0 mm 4.0 mm
Window Collector Gap 2.0 mm 2.0 mm 3.0 mm 5.0 mm 7.95 mm 7.95 mm
Collector Diameter 5.4 mm 20.0 mm 20.0 mm 1.93 mm 12.7 mm 21.9 mm
Guard Ring Width (Radial) 4.3 mm 4.4 mm 4.4 mm 1.2 mm 3.9 mm 7.6 mm
Window Material 3.86 mg/cm2 Kapton 1.0 mm, A, P or T 3.86 mg/cm2 Kapton 7.72 mg/cm2 Kapton 3.86 mg/cm2 Kapton 3.86 mg/cm2 Kapton
Window or Support Rings, Collector and Guard Material A A, P, T A, P, T A A A
Nominal Air Kerma Calibration Factor 5.6E+8 Gy/C 4.6E+8 Gy/C 3.0E+7 Gy/C 3.8E+8 Gy/C 1.9E+7 Gy/C 8.2E+6 Gy/C
Nominal Leakage +/-10 fA +/-10 fA +/-10 fA +/-10 fA +/-10 fA +/-10 fA
Maximum Polarizing Voltage 1000 VDC 1000 VDC 1000 VDC 1000 VDC 400 VDC 400 VDC
Waterproof Yes, with included 1.0mm PMMA cap Yes Yes, with 1.0mm PMMA included cap No No No
Included Build-up Cap None None None None None None

*from exterior surface of window

Support

Product Resources

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Publications

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Tech Notes

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