【摘要】 用单离子计数法可以测量极微弱的电流(1×10^-18A 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。更多还原

【Abstract】 A very small current(<1×10¹⁸A)can be measured with a single ion counting methods.Its principle is briefly explained and some factors which limit the minium and maxium detectable ion current are discussed in this paper.In addition,several kinds of multipliers used for a single ion counting are discribed.更多还原