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Mass filter with phase modulation of radio frequency voltage

机译:具有射频电压的相位调制的质量滤波器

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In this work, the parametric quadrupole resonance caused by the phase modulation of waveform potential is studied. Based on analytical and numerical description of the ion motion in the quadrupole mass filter with the phase modulation, a stability island is found with good ion optical properties such as high ion transmission efficiency (16%), high mass resolution (peak width measured at 10% of peak height,R-0.1= 6000), the required separation time (100-150 radio frequency [RF] cycles), and good peak shape of trapezoid form. Furthermore, the analysis of the frequency spectrum of the applied potential and the quadrupole mass filter (QMF) acceptance are also presented; a resonance frequency is found from this spectrum. Finally, a suitable stability X-islands with relative modulation frequency,nu=2 +/-beta,beta=1P,10 <= P <= 40, is established and studied in detail. Here,beta is the imaginary part of the characteristic exponent of stable solutions to the Mathieu equation.
机译:在这项工作中,研究了由波形电位的相位调制引起的参数四极杆谐振。 基于双支质量过滤器中的离子运动的分析和数值描述,通过相位调制,发现稳定性岛具有良好的离子光学性能,例如高离子传递效率(16%),高质量分辨率(在10时测量峰值宽度) 峰高,R-0.1 = 6000的百分比,所需的分离时间(100-150射频[rf]循环),梯形形式的良好峰值。 此外,还提出了对施加电位的频谱和四极质量滤波器(QMF)接受的分析; 从该频谱中发现共振频率。 最后,建立和研究了具有相对调节频率的合适的稳定性X-岛,Nu = 2 +/-β,β= 1p,10 <= P <= 40,详细研究。 这里,Beta是Mathieu方程稳定解决方案特征指数的虚部。

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