【摘要】 本文介绍了用法拉第筒作为离子检测器的四极滤质器存在干扰电子流的原因。这种电子流对轻质量部分质谱的零输出基线起干扰作用,致使这部分谱峰的峰高不能很好地测量和记录。为消除这种现象,作者提出一种电子—离子分离器式离子检测器来代替常用的法拉第筒检测器,并取得了较好的效果。更多还原

【Abstract】 The causes of disturbing electron current in quadrupole mass filter with Farady cylinder as an ion detector are described. Such current disturbs the zero out-put basic line of the light mass number region, so that it’s very difficult to measure and record the height of spectrum peaks of the light mass number region. In order to eliminate such phenomena, we have suggested a kind of electoton-ion separator to replace Farady cylinder ion detector and have obtained better results.更多还原