| 摘要 |
<p>11CURVED HEATED ION TRANSFER OPTICSAbstractAn ion optics assembly is formed by four quarter-circular profile elements, all of which are attach to the same reference plate. Consequently, all four elements remain aligned to the same reference plate. The four elements form a quarter-circular channel with a quarter-circular quad electrodes. The quad electrodes receive electrical potential to form the field required to focus and maintain the ions at the centre of the channel. Quarter-circular insulators are provided on all sides of the channel so as to seal the channel over its length from the interior of the mass spectrometer. A heater is provided at the entrance to the ion transfer optics, to prevent accumulation of ions on the poles. A thermal break is provided in the quad, so as to enable maintaining the front of the quad heated and the rest of the quad cooler.Figure 6</p> |
