| Popis: |
Discrimination between voltage pulses of different magnitudes is effected by simultaneously applying each pulse and its differential to the X and Y deflecting plates respectively of an oscilloscope and by scanning the screen in the X direction with a thin optical slit and a photomultiplier. The pulse height distribution is displayed on a second oscilloscope and recorded photographically. The apparatus is free from zero drift and drift of channel width. The maximum counting rate for regularly occurring pulses is 3 × 105 per sec. |
