The optimum parameters, such as electron current and voltage for ionization, acceleration voltage, retarding voltage, gas inlet pressure, were determined by experiments.
通过实验确定了最佳参数，其中包括：离化电子电流和电压、加速电压、阻止电势、供气压力等。
The transient discharge voltage and current of the two pre ionization sources were measured also.
对两种预电离源的放电电压和电流进行测量，得到瞬态信息。
The working principle and structure of a surface ionization ion source with high current is described systematically.
本文系统地描述了强流表面电离离子源的工作原理和结构。
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