[20p-E305-1~7] 2.3 Application, radiation generators, new technology

[20p-E305-6] Development of the Reference Radiation Field for Calibrating Dosimeters in Hard X-ray range for Radiation Protection

〇Junya Ishii¹, Tadahiro Kurosawa¹, Masahiro Kato¹ (1.NMIJ AIST)

Keywords:X-ray, calibration, air-kerma

There is a lack of photon fields near 400 keV which can provide air-kerma from NMIJ/AIST for calibrating dosimeters and doseratemeters. We aim to develop the calibration field using X-ray tube over 350 kV as a source. Results of calculations for correction factors by numerical simulation and measurements about photon spectra of the calibratinon fields are presented as the current status.