An electron/ion pulse counting system was used for a high-counting-rate application under strong electromagnetic noise. The number of photoelectrons produced by a nonresonant multiphoton ionization of gaseous molecules was counted as a function of gas pressure in vacuum. The system was successfully operated under electromagnetic noise originated from a pulsed laser. The detector acted as a gated, accumulating counter with a capacity of 300 cps. A maximum counting rate of 2×1010 cps was experimentally achieved when laser-produced photoelectrons arrived within a gate of 15 ns.
|ジャーナル||Review of Scientific Instruments|
|出版ステータス||Published - 1996 1 1|
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