Micro Imager - Operating principle



  • The Beta particle emitted by the sample (1) produces a light spot in the scintillator sheet placed on top of the sample.
  • This light enters the intensifier tube (5) and is amplified by the double microchannel plate of the tube .
  • Each light spot is measured by the CCD chip and individually counted or rejected.
  • The actual center of the light spot is calculated to obtain maximum precisional accuracy on where the associated Beta particle entered the detector. This ensures very high resolution.
  • Beta particles are counted and accumulated in real time and on the autoradiographic image displayed on the PC screen.