DEVICE FOR PRODUCING SCANNING IMAGES

摘要

PURPOSE:To alleviate the deterioration of the sample caused by scanning lines by generating a signal from an image memory so that scanning lines are prevented from being irradiated upon the sample after the image memory completes storing a given number of pictures. CONSTITUTION:Radiated X-rays are transmitted by a sample 8 and then converted into an electric signal by means of a scintillator 10. The electric signal is then supplied to a displayer 13 through an amplifier 15 and is displayed as an image on the displayer 13. When a memory 14 completes storing the image of one picture, the memory 14 generates a signal which causes an excitation power supply 12 to energize a coil 11 for producing a magnetic field. As the result, the electron rays are deflected as indicated by the broken line and then are interrupted by a disphragm 14. Since it is adequate for electron rays to be irradiated upon the target for a short time, the temperature of the target is not increased and the thermal deterioration of the sample 8 close to the target is alleviated.