Exradin Detectors

Exradin® Ion Chambers The purest picture of dose

The standard in dosimetry measurements for over 40 years

Exradin®

Thimble Ion Chambers

Strict manufacturing tolerances and waterproof construction makes these detectors ideal for dosimetry calibrations in water, air and other phantom materials.

Exradin feature thimbles2 1400
  Exradin® A19 Ion Chamber, Waterproof Classic Farmer, 0.62cc Exradin® A12 Ion Chamber, Waterproof Farmer Type, 0.64cc Exradin® A1SL Ion Chamber, Slim Line Miniature Shonka, 0.053 cc Exradin® A28 Ion Chamber, Scanning, 0.125cc

Exradin® A19 Ion Chamber, Waterproof Classic Farmer, 0.62cc

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Exradin® A12 Ion Chamber, Waterproof Farmer Type, 0.64cc

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Exradin® A1SL Ion Chamber, Slim Line Miniature Shonka, 0.053 cc

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Exradin® A28 Ion Chamber, Scanning, 0.125cc

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Collecting Volume 0.62 cm3 0.64 cm3 0.053 cm3 0.125 cm3
Centroid of Collecting Volume* 13.0 mm 12.9 mm 4.06 mm 4.47 mm
Outside Diameter of Shell 7.1 mm 7.1 mm 6.35 mm 8.0 mm
Inside Diameter of Shell 6.1 mm 6.1 mm 4.0 mm 5.8 mm
Shell Wall Thickness 0.5 mm 0.5 mm 1.2 mm 1.1 mm
Collector Diameter 1.0 mm 1.0 mm 1.0 mm 1.0 mm
Collector Length 21.6 mm 21.6 mm 4.4 mm 6.4 mm
Spot Size** 26.2 x 7.0 mm 26.5 x 7.1 mm 8.0 x 6.4 mm 8.0 x 8.0 mm
Shell, Collector, and Guard Material C552 C552 C552 C552
Nominal Air Kerma Calibration Factor 4.5E+7 Gy/C 4.4E+7 Gy/C 5.4E+8 Gy/C 2.3E+8 Gy/C
Nominal Leakage +/- 10 fA +/- 10 fA +/- 10 fA +/- 10 fA
Maximum Polarizing Voltage 1000 VDC 1000 VDC 1000 VDC 1000 VDC
Waterproof Yes Yes Yes Yes
Included Build-up Cap 60Co 60Co none 60Co
From exterior tip of shell *
Spot Size is not “minimum field size” – these dimensions are provided to enable the user can ensure their ion chamber’s spot size is smaller than the 100% isodose line to prevent any partial volume effects. **
Shonka air-equivalent plastic C552

Exradin®

Micro Ion Chambers

Superior small-field dosimetry to assess pinpoint radiation in IMRT, stereotactic, orthovoltage, x-rays and superficial skin therapy.

Exradin feature micros 1400
  Exradin® A14 Ion Chamber, Microchamber, 0.015cc Exradin® A14SL Ion Chamber, Slim Line Microchamber, 0.015cc Exradin® A26 Ion Chamber, MicroPoint, 0.015cc Exradin® A16 Ion Chamber, MicroPoint, 0.007cc

Exradin® A14 Ion Chamber, Microchamber, 0.015cc

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Exradin® A14SL Ion Chamber, Slim Line Microchamber, 0.015cc

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Exradin® A26 Ion Chamber, MicroPoint, 0.015cc

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Exradin® A16 Ion Chamber, MicroPoint, 0.007cc

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Collecting Volume 0.015 cm3 0.015 cm3 0.015 cm3 0.007 cm3
Centroid of Collecting Volume* 2.21 mm 2.39 mm 1.98 mm 1.65 mm
Outside Diameter of Shell 6.0 mm 6.35 mm 4.3 mm 3.4 mm
Inside Diameter of Shell 4.0 mm 4.0 mm 3.3 mm 2.4 mm
Shell Wall Thickness 1.0 mm 1.2 mm 0.5 mm 0.5 mm
Collector Diameter 0.3 mm 0.3 mm 0.75 mm 0.3 mm
Collector Length 1.5 mm 1.5 mm 1.78 mm 1.27 mm
Spot Size** 5.3 x 6.4 mm 5.3 x 6.4 mm 4.3 x 4.3 mm 3.5 x 3.4 mm
Shell Material C552 C552 C552 C552
Nominal Air Kerma Calibration Factor 1.9E+9 Gy/C 1.9E+9 Gy/C 1.85E+9 Gy/C 4.1E+9 Gy/C
Nominal Leakage +/-10 fA +/-10 fA +/-10 fA +/-10 fA
Maximum Polarizing Voltage 1000 VDC 1000 VDC 1000 VDC 1000 VDC
Waterproof Yes Yes Yes Yes
Included Build-up Cap None None 60Co 60Co
From exterior tip of shell *
Spot Size is not “minimum field size” – these dimensions are provided to enable the user can ensure their ion chamber’s spot size is smaller than the 100% isodose line to prevent any partial volume effects. **
Shonka air-equivalent plastic C552
Shonka tissue-equivalent plastic A150

Exradin®

Parallel Plate Chambers

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

Exradin feature parallel 1400
  Exradin® A10 Ion Chamber, UltraGuard Markus-type Waterproof Electron Chamber, 0.050 cc Exradin® A11 Ion Chamber, Roos-type Parallel Plate, 0.62 cc Exradin® A11TW Ion Chamber, Spokas Thin Window Parallel Plate, 0.93cc Exradin A20 Low Energy X-Ray Ion Chamber, 0.074cc

Exradin® A10 Ion Chamber, UltraGuard Markus-type Waterproof Electron Chamber, 0.050 cc

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Exradin® A11 Ion Chamber, Roos-type Parallel Plate, 0.62 cc

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Exradin® A11TW Ion Chamber, Spokas Thin Window Parallel Plate, 0.93cc

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Exradin A20 Low Energy X-Ray Ion Chamber, 0.074cc

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Collecting Volume 0.050 cm3 0.62 cm3 0.93 cm3 0.074 cm3
Centroid of Collecting Volume* 1.0 mm 2.0 mm 1.5 mm 1.8 mm
Window Collector Gap 2.0 mm 2.0 mm 3.0 mm 5.0 mm
Collector Diameter 5.4 mm 20.0 mm 20.0 mm 1.93 mm
Guard Ring Width (Radial) 4.3 mm 4.4 mm 4.4 mm 1.2 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
Window or Support Rings, Collector and Guard Material C552 C552, D400, or A150 C552, D400, or A150 C552
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
Nominal Leakage +/-10 fA +/-10 fA +/-10 fA +/-10 fA
Maximum Polarizing Voltage 1000 VDC 1000 VDC 1000 VDC 1000 VDC
Waterproof Yes, with included 1.0mm PMMA cap Yes Yes, with 1.0mm PMMA included cap No
Included Build-up Cap None None None None
Shonka air-equivalent plastic C552
Shonka tissue-equivalent plastic A150
polystyrene-equivalent plastic D400

Exradin®

Spherical Ion Chambers

Exradin Spherical Ion Chambers are relied upon worldwide for precise measurement of radiation exposure and exposure rates. They are easily positioned for in-air measurements.

Exradin feature spherical 1400
  Exradin® A3 Spherical Ion Chamber, 3.6cc Exradin® A4 Spherical Ion Chamber, 30cc Exradin® A5 Spherical Ion Chamber, 100cc Exradin® A6 Spherical Ion Chamber, 800cc

Exradin® A3 Spherical Ion Chamber, 3.6cc

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Exradin® A4 Spherical Ion Chamber, 30cc

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Exradin® A5 Spherical Ion Chamber, 100cc

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Exradin® A6 Spherical Ion Chamber, 800cc

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Collecting Volume 3.6 cm3 30 cm3 100 cm3 800 cm3
Outside Diameter of Shell 19.6 mm 39.1 mm 63.1 mm 120.4 mm
Inside Diameter of Shell 19.1 mm 38.1 mm 57.2 mm 114.4 mm
Shell Wall Thickness 0.25 mm 0.5 mm 3.0 mm 3.0 mm
Collector Diameter 2.1 mm 4.1 mm 6.5 mm 11.6 mm
Collector Length 13.3 mm 24.9 mm 37.3 mm 74.0 mm
Shell, Collector, and Guard Material C552 C552 C552 C552
Nominal Air Kerma Calibration Factor 9.0E+8 R/C 1.1E+8 R/C 3.3E+7 R/C 4.2E+6 R/C
Nominal Leakage +/-10 fA +/-10 fA +/-10 fA +/-10 fA
Maximum Polarizing Voltage 1000 VDC 1000 VDC 1000 VDC 1000 VDC
Waterproof No No No No
Integral Build-up Cap None None 60Co 60Co
Shonka air-equivalent plastic C552
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