中文摘要：

设计了一种新型射频电源,主要由信号发生及放大模块、幅值调节模块、功率驱动模块构成,其结构紧凑、体积小、性能稳定、成本低。此射频电源分为低频和高频两部分,分别用以驱动自制飞行时间质谱仪传输区的两段四极杆,可调频率范围分别为150～900 kHz及1～2 MHz,峰峰值Vp-p可调范围分别为0～100 V和0～1 400 V。配合自制飞行时间质谱仪对实际样品进行测试,可稳定测得m/z 50～1 200范围内的离子,5.0×10-9～5.0×10-5mol/L浓度的样品离子线性良好。

英文摘要：

A new radio frequency（RF） power supply was developed,which composed of the module of signal generating and amplifying,the module of amplitude adjusting and the module of power driving.The power supply is compact,small size,stable and low cost,and is divided into low-frequency part and high-frequency part to drive two radio frequency quadrupoles in home-made time-of-flight mass spectrometer.The tunable frequency range of RF power supply are 150-900 kHz in low-frequency and 1-2 MHz in high frequency,the adjustable range of peak to peak voltage Vp-p are 0-100 V in low-frequency and 0-1 400 V in high frequency.With the RF power supply described in this paper,the home-made time-of-flight mass spectrometer was used to test the samples.As a result,the ions with m/z of 50-1 200 could be stably measured,and a good linearity was obtained in the concentration range of 5.0×10-9-5.0×10-5 mol/L for samples.