Radiation dosimeter FTR-125

An accurate and precise film dosimeter for radiation processing, materials testing and related research and development Cellulose Triacetate (CTA) Dosimeter for Dosimetry in Electron Beam, Gamma-ray and Ion Beam Irradiations. CTA dosimeter is an accurate and precise film dosimeter of which the optical density increases by radiation exposure. It is most suitable for radiation processing, materials testings and related various research and development. Characteristics •Linear dose response •Simple measurement procedure •High spatial resolution •Applicable to ion beam dosimetry Accurate and precise dosimetry is essential to quality control in industrial radiation processing and R&D using radiation from large radionuclide and machine sources. CTA dosimeter, FTR-125, has been developed for routine dosimetry in these fields. The optical density of the dosimeter film increases linearly with absorbed dose for electron beams, gamma-rays, and ion beams. Since the dosimeter is in the shape of a thin long tape, it allows to accurately and conveniently measure dose distributions on the surface of irradiated samples and depth-dose distributions in the samples with high spatial resolution. Method of Measurement Absorbed dose is evaluated from the measured value of the increment of the optical density at the wavelength of 280nm induced by radiation. The optical density can be measured with ordinary U-V spectrophotometers. A reliable and convenient dose reader exclusively for CTA dosimeter is also commercially available from Nissin High Voltage Co., Ltd.