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.
Also available in MR compatible version.
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.
Also available in MR compatible version.
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.
Also available in MR compatible version.
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.
Also available in MR compatible version.
The Exradin A1 has the same internal dimensions and collecting volume as the A1SL, yet the larger diameter is ideal for use in solid phantoms. This chamber is characterized in TG-51 and TRS-398.
Ideal for precise measurement of exposure and air kerma in photon beams and absorbed dose in photon, electron, proton and other beams.
Available in air, polystyrene, tissue and magnesium equivalent plastic.
The Model A28 Chamber features exceptional omni-directional spatial resolution for relative dosimetry scanning in water phantoms and use in minute field measurements.
Also available in MR compatible version.
Exradin A1 | Exradin A1SL | Exradin A2 | Exradin A19 | Exradin A12 | Exradin A12S | Exradin A28 | |
---|---|---|---|---|---|---|---|
Collecting Volume | 0.053 cm3 | 0.053 cm3 | 0.53 cm3 | 0.62 cm3 | 0.64 cm3 | 0.24 cm3 | 0.125 cm3 |
Centroid of Collecting Volume* | 3.86 mm | 4.06 mm | 6.96 mm | 13.0 mm | 12.9 mm | 5.79 mm | 4.47 mm |
Outside Diameter of Shell | 6.0 mm | 6.35 mm | 11.4 mm | 7.1 mm | 7.1 mm | 7.1 mm | 8.0 mm |
Inside Diameter of Shell | 4.0 mm | 4.0 mm | 9.5 mm | 6.1 mm | 6.1 mm | 6.1 mm | 5.8 mm |
Shell Wall Thickness | 1.0 mm | 1.1 mm | 1.0 mm | 0.5 mm | 0.5 mm | 0.5 mm | 1.1 mm |
Collector Diameter | 1.0 mm | 1.0 mm | 4.6 mm | 1.0 mm | 1.0 mm | 1.0 mm | 1.0 mm |
Collector Length | 4.4 mm | 4.4 mm | 8.4 mm | 21.6 mm | 21.6 mm | 7.5 mm | 6.4 mm |
Shell, Collector, and Guard Material | A, T | A | A, P, T | A | A | A | A |
Nominal Air Kerma Calibration Factor | 5.4E+8 Gy/C | 5.4E+8 Gy/C | 5.4E+7 Gy/C | 4.5E+7 Gy/C | 4.4E+7 Gy/C | 1.2E+8 Gy/C | 2.3E+8 Gy/C |
Nominal Leakage | +/- 10 fA | +/- 10 fA | +/- 10 fA | +/- 10 fA | +/- 10 fA | +/- 10 fA | +/- 10 fA |
Maximum Polarizing Voltage | 1000 VDC | 1000 VDC | 1000 VDC | 1000 VDC | 1000 VDC | 1000 VDC | 1000 VDC |
Waterproof | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
Included Build-up Cap | None | None | None | 60Co | 60Co | 60Co | 60Co |
*From exterior tip of shell
View publications related to this product from experts in the fields of medical physics and oncology.
Go to Publications »Find detailed instructions on how to setup and execute common processes from our experienced technicians.
Go to Tech Notes »While the vast majority of electrometers are of the floating design, there are some older electrometers with a non-floating design. While effective use of Exradin chambers can be achieved in plastic phantoms or in a water tank with the assistance of a thin, sealed sleeve around the chamber body, usage of a non-floating electrometer is discouraged due to a resulting shock hazard.
Determine which part of the electrometer + extension cable + chamber system is exhibiting the leakage or causing drift, in this order of troubleshooting: