Exradin A2 Ion Chamber

92705 A2

Exradin A2 Ion Chamber

UNCOMPROMISING QUALITY

For relative dosimetry scanning and measuring points in water, air, or other phantom material

A PERFECT BALANCE BETWEEN FAST SCANNING AND POINT DOSE MEASUREMENTS

The Spokas Thimble Chamber permits the precise measurement of exposure and air kerma in photon beams and of absorbed dose in photon, electron, proton, neutron, and mixed photon-neutron beams.

FAST, PRECISE MEASUREMENTS

Its waterproof construction and two piece removable stem makes it ideal for use in water phantoms. The chamber vents through a flexible tube that surrounds the triaxial cable, ensuring the collecting volume is in pressure equilibrium with the surroundings. The design assures there are no stem or voltage soakage effects, providing precise and reliable measurements.

DURABLE CONSTRUCTION, BUILT TO LAST

The Model 2 Exradin Spokas Thimble Chamber is available in three versions of rugged, Shonka plastic, providing excellent conductivity and years of reliable use:


Specifications

REF Number 92718 - A2
92720 - P2
92721 - T2
Collecting Volume 0.54 cm3
Nominal Calibration Factor 6 R/nC
Centroid of Collecting Volume 7.0 mm from tip of chamber
Collector Diameter 4.6 mm
Outside Diameter of Shell Collecting Volume 11.4 mm
Wall Thickness 1.0 mm
Shell, Collector, and Guard Material A2 - Shonka air-equivalent plastic C552
P2 - Polystyrene-equivalent plastic D400
T2 - Shonka tissue-equivalent plastic A150
Venting Vented to the ambient via the flexible vent tube surrounding the triaxial cable
Stem 1.3 cm OD black phenolic, two-piece with 5.1 and 12.7 cm segments
Nominal Collection Efficiency 1.000
Maximum Polarizing Potential 1000 V
Nominal Inherent Leakage Currents 10-15 A
Low-Noise Triaxial Cable 50 ohms, 29 pF/ft, 1.5 m long
Signal Connector Triaxial BNC plug (2-Lug, male pin); others available upon request
High Voltage Connector Integral with triaxial connector (shell of chamber is common with connector body)
Waterproof Yes
Product Standards CE0413, Designed to meet IEC 60601-1, IEC 60731


Model A2 Schematic


Specifications subject to change without notice.