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Exradin™ Micro Chamber
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MT-ERI-A14 EXRADIN MICRO CHAMBERThe Model 14 Microchambers were developed specifically for assessment of the radiation fields encountered in stereotactic radiosurgery.

Two versions of the Model 14 are available: A14, which is constructed of air-equivalent plastic C552, and T14, which is constructed of tissue-equivalent plastic A150.

Outwardly, the Microchamber is identical to the Miniature Shonka Thimble Chamber for both use the same base and shell. The Microchamber, however, has a special collector-guard assembly, with a collector of zero length, which confines the sensitive volume to the very tip of the chamber.

Features:

  • Axially symmetric design
  • Extremely small gas volume
  • Homogeneous construction
  • Complete guarding
  • Waterproof construction
  • Gas flow capability
  • Integrally flexible, low-noise cable
  • Separable minimum scatter stem
  • Matching equilibrium caps
  • Adaptable to RSVP phantom
Part # Description Collecting Volume
MT-ERI-A14 Air equivalent chamber 0.009 cc
MT-ERI-T14 Tissue equivalent chamber 0.009 cc
 
Co-60 equilibrium caps
MT-ERI-A14-2.0 2.0mm cap
MT-ERI-T14-4.0 4.0mm cap
 
Collecting Volume: 0.009 cm3
Collector Diameter: 1.5mm x zero length
Wall Thickness: 1.0mm
Wall, Collector, and Guard Material: A14: Shonka air-equivalent plastic C552
T14: Shonka tissue-equivalent plastic A150
Maximum Polarizing Potential: Greater than 1000v
Inherent Leakage Currents: Less than 10-15 amperes
Cable: 50 Ohms, 29pF/f, 3m long
Signal Connector: Choice of coaxial and triaxial BNC plugs and jacks and triaxial TNC plug
Nominal calibration factor for Co-60: 365 R/nC

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