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With former cooling-off period control being manner in order resolution the parent ion choice with
With former cooling-off period control being manner in order resolution the parent ion choice with
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机译：以以前的冷却周期控制方式来解决母离子的选择
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摘要
PURPOSE: To avoid disorder of ion paths and suppress an ultimate ion loss and expansion of the trap size by taking cooling time for ions in ionization process in a quadrupole ion trap to form a high signal-to-noise ratio. ;CONSTITUTION: This method is to selectively dissociate parent ions by collision dissociation in a quadrupole ion trap (hereafter called as a trap) and comprises the following processes (a)-(f): (a) introducing a buffer gas into the trap; (b) injecting a sample gas to be analyzed into the trap; (c) applying at least an RF field with an amplitude V and d.c. potential U to capture ions with a selected mass/charge ratio in a selected stabilized operation mode of the trap; (d) ionizing the sample; (e) continuously carrying out the application of the RF field at selected various time intervals; and (f) adjusting the amplitude V or the potential U to assume the value of the energy from the RF filed to be transmitted non-resonant manner to the selected ions.;COPYRIGHT: (C)1995,JPO
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