0.125 cc finger ionization chamber

       The 0.125 3 finger ionization chamber is suitable for measuring absolute radiation dose of high-energy photon, electron and proton beam. It can be used with the dosimeter and the scanning water tank. Because of its small geometric size, it has good spatial resolution, and high sensitive volume is more suitable for accurate dose distribution measurement. Because its sensitive volume is nearly spherical, it has excellent angular response and spatial resolution. It is the preferred ionization chamber for measuring absolute dose of three-dimensional tank. At the same time, it can also be used for photon therapy beam and gamma knife generated by medical accelerator and external radiation dose less than 10MeV electron beam.

Technical indicators

Product type: atmospheric pressure finger ionization chamber, comply with IEC60731 issued ionization chamber dosimeter medical electrical standard.
Ionization chamber wall: high purity graphite (density: 0.82g/cm3) wall thickness: 0.15mm
Collector: high purity aluminum (99.99%) diameter: 1.1 mm
Application: absolute radiation dose measurement at treatment level
Measurements: absorbed dose in water, air specific kinetic energy and exposure dose.
Reference radiant substance: 60Co
Sensitive volume: 0.125, 3
Sensitivity: 3.3nC/Gy
Long-term stability: less than 1.0%/ per year
X energy response: less than 4%
Leakage current: < < + 4fA
Operating voltage of ionization chamber: + 100-400v
Energy range: 60Kv to 25MV (photon beam)
(10-45) MeV (electron beam)
(50-270) MeV (proton beam)
Illuminating field: (2*2) 2... (40*40) 2
The plug of the ionization chamber can be selected by BNC, TNC, etc., and can be completely used in conjunction with PTW and IBA dosimeter.