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Optimum Modification of Entrance Fringing Field in Quadrupole Mass Spectrometers
Author(s): 
Pages: 77-81
Year: Issue:  5
Journal: Vacuum Science and Technology

Keyword:  四极质谱计 入口边缘场 质量岐视效应 抗污染性;
Abstract: 对四极质谱计入口边缘场提出了一种优化修正的工作模式 :在杆系的结构上采用加有端盖的短杆与长杆串联 ;短杆需有确定的几何长度和电长度 ;纯高频短杆场轴电位随质量扫描同步变化。实验证明该模式使灵敏度得到进一步提高 ,特别在克服质量岐视效应、抗污染方面效果显著。
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