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用单离子计数法可以测量极微弱的电流(1×10~(-18)A 以下)。本文说明了单离子计数的原理,讨论了限制测量范围的因素,并描述了几种用于单离子计数的倍增器。
A very weak current (1 × 10 ~ (-18) A or less) can be measured by single-ion counting. This article describes the principle of single-ion counting, discusses the factors that limit the measurement range, and describes several multipliers for single-ion counting.