EXPERIMENTAL DETERMINATION OF SOME OF SPECIAL CHARACTERISTICS FOR X-RAY MACHINE

Abstract

In this report, some of the special characteristics such as machine factor (MF), half-value layer (HVL) and homogeneity factor (HF) for the X-ray machine “RF-200EGM” applied in industrial radiography testing were determined by the experimental measurements of exposure dose-rate using the X-ray inspective machine “Victoreen 8000”.

The research results were as follows: Determination of MF in range of high voltages from 70 kV to 200 kV and values of MF depend on high voltages and distances from the center of X-ray generating target; determination of HF in range of high voltages from 70 kV to 200 kV with using aluminum filters to measure HVL. Besides, calculation of MF for some of the diagnostic X-ray machines at the medical installations in Ho Chi Minh City was also implemented to compare them with the results of the X-ray machine “RF-200EGM”.