Spherical Ion Chambers

Spherical Ion Chambers



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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

 

The Exradin Advantage

  • Ideal for calibration laboratories, research applications, manufacturing and accelerator room scatter measurements.
  • Precise in-air exposure measurements through spherical design.
  • Obtain accurate measurements in any direction without radiation absorption by the body of the chamber.
  • For assessing pinpoint radiation fields for IMRT, orthovoltage, x-rays, stereotactic, and superficial skin therapy
  • Inherently waterproof construction for use in most water tanks — eliminating the need for waterproofing sleeves or protective coatings
  • Chamber vents through a flexible tube surrounding the triaxial cable — vent tube is sealed to the chamber body and open near the connector; ideal for use in water or plastic phantoms

Exradin A3 Ion Chamber

3.6 cc collecting volume is ideal for laboratory transfer standards and secondary standard for exposure measurements.

 

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Exradin A4 Ion Chamber

30 cc collecting volume is ideal for laboratory transfer standards, secondary standard for exposure measurement and integrating exposure over a large area.

 

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Exradin A5 Ion Chamber

100 cc collecting volume is ideal for secondary standards for exposure measurement, integrating exposure over a large area and room scatter measurements.

 

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Exradin A6 Ion Chamber

800 cc collecting volume is ideal for secondary standards for exposure measurements, integrating exposure over a large area and room scatter measurements.

 

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Exradin A8 Ion Chamber

15,700 cc collecting volume is ideal for secondary standards for extremely low exposure measurements, integrating exposure over a large area and room scatter measurements.

 

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Specifications
  Exradin A3 Exradin A4 Exradin A5 Exradin A6 Exradin A8
Collecting Volume 3.6 cm3 30 cm3 100 cm3 800 cm3 15,700 cm3
Outside Diameter of Shell 19.6 mm 39.1 mm 63.1 mm 120.4 mm 323.2 mm
Inside Diameter of Shell 19.1 mm 38.1 mm 57.2 mm 114.4 mm 311.2 mm
Shell Wall Thickness 0.25 mm 0.5 mm 3.0 mm 3.0 mm 6.0 mm
Collector Diameter 2.1 mm 4.1 mm 6.5 mm 11.6 mm 22.4 mm
Collector Length 13.3 mm 24.9 mm 37.3 mm 74.0 mm 166.7 mm
Shell, Collector, and Guard Material A A A A A
Nominal Air Kerma Calibration Factor 9.0E+8 R/C 1.1E+8 R/C 3.3E+8 R/C 4.2E+8 R/C 2.1E+8 R/C
Nominal Leakage +/-10 fA +/-10 fA +/-10 fA +/-10 fA +/-10 fA
Maximum Polarizing Voltage 1000 VDC 1000 VDC 1000 VDC 1000 VDC 1000 VDC
Waterproof No No No No No
Included Build-up Cap None None 60Co integral 60Co integral 60Co integral

 

Downloads Exradin Brochure: Download PDF (1.68 MB)