کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1194606 | 1492336 | 2009 | 6 صفحه PDF | دانلود رایگان |

We report the computer simulation results of a tandem RF-only quadrupole mass filter. This mass filter consists of two short quadrupole rod sets, Q1 and Q2. The first quadrupole, Q1, is operated as a higher mass reject filter to remove lower q ions. The main filter, Q2, is a RF-only quadrupole, and it is used to give suitable narrow pass band on q axis. Quadrupole excitation by additional RF voltage leads to instability bands along q axis between q = 0 and q = 0.2, and this instability band can be used to remove low q ions with m = M0 − ∞ mass range. Quadrupole excitation creates a narrow pass band near q0 = 0.9080 in Q2. R0.1 = 1150 could be achieved at short separation time n = 40 in Q2.
A powerful instability band located near β = ν = 1/10 is created with auxiliary low frequency quadrupole excitations to filter low q ions.Figure optionsDownload as PowerPoint slide
Journal: International Journal of Mass Spectrometry - Volume 286, Issues 2–3, 15 September 2009, Pages 89–94