科研之友
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摘要
In this paper a very sensitive ion collection device, for diagnostic of laser ablated-target plasma, is described. It allows for reducing down to few microvolts the signal threshold at digital scope input. A standard ion collector is coupled to a transimpedance amplifier, specially designed, which increases data acquisition sensitivity by a gain approximate to 1100 and does not introduce any significant distortion of input signal. By time integration of current intensity, an amount of charge as small as 2.7 x 10(-2) pC can be detected for photopeak events.
- 出版日期2012-6
- 单位中国原子能科学研究院
