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Thimble Ion Chambers

flip_exradin_thimbles_750x500
  Strict manufacturing tolerances and waterproof construction makes these detectors ideal for dosimetry calibrations in water, air and other phantom materials. Also available in MR compatible versions.   Exradin A19 Ion Chamber The A19 fits existing plastic phantom cavities and build-up caps, l ...Read more



  • Description
  • Specifications

 

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

Also available in MR compatible versions.

 

Exradin A19 Ion Chamber

The A19 fits existing plastic phantom cavities and build-up caps, limiting perturbation and minimizing settling time in absolute dosimetry calibration. This chamber is characterized for TG-51 procedures.

 

Exradin A12 Ion Chamber

Characterized in TG-51 and TRS-398, the A12 has fast settling time and a removable stem for superior absolute dosimetry calibrations in water, air or phantoms.

 

Exradin A12S Ion Chamber

The A12S is designed for absolute dosimetry calibrations in water, air or phantoms. The collector of the A12S is approximately one-third the size of the A12, confining collecting volume to the tip of the chamber.

 

Exradin A1SL Ion Chamber

The A1SL, available in air or tissue equivalent plastic, provides a perfect balance between fast scanning and point-dose measurements within 1cm in water, air or phantom materials. This chamber is characterized for TG-51 and TRS-398 procedures. 6x7mm field size

 

Exradin A28 Ion Chamber

The Model A28 Chamber features exceptional omni-directional spatial resolution for relative dosimetry scanning in water phantoms and use in minute field measurements. View Exradin® A28 Ion Chamber, Scanning, 0.125cc

 

 

  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
 
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 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
Material C552 C552 C552 C552
Air Kerma 4.5E+7 Gy/C 4.5E+7 Gy/C 5.4E+8 Gy/C 2.3E+8 Gy/C
Nominal Leakage +/- 10 fA +/- 10 fA +/- 10 fA +/- 10 fA
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.
C552 Shonka air-equivalent plastic