Printed circuit board based segmented quadrupole ion guide
| Autor: | Florian Schlottmann, Maria Allers, Manuel Eckermann, Stefan Zimmermann |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Buffer gas
010402 general chemistry Mass spectrometry 01 natural sciences Ion Printed circuit board Optics Physics::Plasma Physics ddc:530 printed circuit boards (PCB) Physical and Theoretical Chemistry Instrumentation Spectroscopy radio frequency (RF) business.industry Chemistry 010401 analytical chemistry Condensed Matter Physics 0104 chemical sciences Quadrupole Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik Electric potential Radio frequency business collisional damping quadrupole ion guides Voltage |
| Zdroj: | International Journal of Mass Spectrometry 443 (2019) |
| ISSN: | 1387-3806 |
| DOI: | 10.1016/j.ijms.2019.05.018 |
| Popis: | Collisional damping quadrupole ion guides have become popular tools in mass spectrometry. In such devices, ions are cooled by collisions with a buffer gas and focused to trajectories near the axis of the ion guide under the influence of a radio frequency (RF) field. This produces a narrow beam of low-energy ions which can be transported with high efficiency. Typically, quadrupole ion guides are constructed of four parallel rods to which RF voltages are applied. To overcome the dampening of the axial velocity component resulting from collisions with neutral gas particles, an additional static axial field is provided by dividing the rods in several segments and applying an electric potential to each segment. However, this method is mechanically complex, requiring a precise alignment of all segments, and several separate connections for the DC und RF voltages to all segments. In this work, we present a simple and low-cost segmented quadrupole ion guide design that is based on standard printed circuit boards (PCB) including both the segmented electrodes as well as the signal distribution network. Furthermore, we present simulations of the ion movement inside this PCB quadrupole and experimentally evaluate the ion transfer. Our measurements show that the segmented PCB quadrupole with planar electrodes reaches similar ion transmissions in comparison with conventional quadrupole ion guides built from segmented circular rods. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect