3120 Deming Way
Middleton, WI 53562-1461
Phone: 800-261-4446 / 608-831-0025
Exradin A12 Ion Chamber
For absolute dosimetry calibrations in water, air, or other phantom material
DESIGNED FOR ABSOLUTE DOSIMETRY CALIBRATION
Exradin Farmer-type Chambers are specifically designed for absolute dosimetry calibrations in water, air, or other phantom material. The Model A12 is completely characterized in TG 51 and TRS 398.
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
Farmer-type Chambers are constructed of rugged C552 Shonka air-equivalent plastic, providing excellent conductivity and years of reliable use. Rigorous one meter drop test proves ruggedness and reliability.
Features and Benefits
Model A12 Exradin Farmer-type Chamber
Model A12 Schematic
AAPM’s TG-51 Protocol for Clinical Reference Dosimetry of High-Energy Photon and Electron Beams
P. Almond, P. Biggs, B. Coursey, W. Hanson, M. Huq, R. Nath, and D. Rogers
Medical Physics 26(9), 1847 (1999)
Absorbed-Dose Beam Quality Conversion Factors for Cylindrical Chambers in High Energy Photon Beams
J. Seuntjens, C. Ross, K. Shortt, and D. Rogers
Medical Physics 27(12), 2763 (2000)
Wall Correction Factors, Pwall, for Thimble Ionization Chambers
L. Buckley and D. Rogers
Medical Physics 33(2), 455 (2006)