Cylinder Stem Ionization Chamber 23361
- Vented sensitive volume of 30 cm3
- Suitable as high precision reference chamber for radiation protection dosimetry
- Very flat energy response within a wide range
The cylinder stem chamber is designed as a reference chamber for absolute dosimetry to be used by secondary standard dosimetry laboratories (SSDL) and users with high quality requirements. It has very small variations of response with radiation quality from low X-ray energies up to high-energy photon radiation. The nominal useful energy range is 30 keV up to 60Co radiation. The cylindrical sensitive volume has a diameter of 31 mm and a length of 51 mm. The wall material is graphite with a protective acrylic cover. The electrode is made of graphite-coated aluminum. The guard ring is designed up to the measuring volume. The chamber is constructed with a long rigid stem of approx. 20 cm length for easy mounting in the radiation beam. An acrylic build-up cap with 3 mm wall thickness for in-air measurement in 60Co beams is included with each chamber, as well as a calibration certificate. Air density correction is required for each measurement.
A radioactive check device and an appropriate holding device are available.
