The Time Lag in Gas-Filled Photoelectric Cells

Abstract

Time lag measurements are described which were made with a light chopper on a gas‐filled cell of special design. The resulting response vs. frequency characteristic exhibits the resonance oscillations predicted from theory and calculation of the lag from the positive ion mobility agrees with that determined from this curve. The construction of the cell is such that secondary emission and disintegration of the cathode by ion bombardment are eliminated even at high values of gas amplification.