The first method of counting atomic particles was by “scintillations.” Using a microscope, early atomic physicists counted the tiny flashes of light that are made by particles from radium as they hit ...

IT is of great interest, particularly in cosmic ray experiments, to employ scintillation counters which have a large sensitive area. The first essential is a large transparent crystal. Crystals of ...

Scintillation Counters When certain substances are hit by a ray or particle, they emit light. Joined to a device which amplifies the flash, they make an instrument of great versatility and large ...