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Multi-channel high-field asymmetric waveform ion transfer tube

A wave-shaped ion migration and high-field asymmetric technology, applied in the direction of electron/ion optical devices, particle separator tube parts, etc., can solve the problems of weak ion signals and difficulty in ensuring coaxiality, etc., to reduce ion loss and improve The effect of resolution

Active Publication Date: 2022-03-29
TSINGHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] In view of the above problems, the purpose of the present invention is to provide a movable multi-channel high-field asymmetric waveform ion transfer tube to solve the problem of large internal and external electrode gaps and weak ion signals in existing cylindrical transfer tubes. It is difficult to ensure the coaxiality of the inner and outer electrodes

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  • Multi-channel high-field asymmetric waveform ion transfer tube

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Embodiment Construction

[0029] In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more embodiments. It may be evident, however, that these embodiments may be practiced without these specific details. In other instances, well-known structures and devices are shown in block diagram form in order to facilitate describing one or more embodiments.

[0030] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0031] figure 1 shows the structure of a multi-channel high-field asymmetric waveform ion transfer tube according to an embodiment of the present invention, figure 2 shows a first side cross-sectional view of a migration zone 7 according to an embodiment of the invention, image 3 shows a second side cross-sectional view of the migration zone 7 according to an embodiment of the invention, Figure 4 shows a third side sec...

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Abstract

A multi-channel high-field asymmetric waveform ion transfer tube provided by the present invention includes a transfer region and a detection region arranged at the output end of the transfer region; the transfer region includes a columnar inner electrode and a ring-shaped outer electrode, and the ring The ring-shaped outer electrode is sleeved outside the columnar inner electrode, and an electrode gap is formed between the ring-shaped outer electrode and the columnar inner electrode; wherein, a penetrating isolation column is arranged in the electrode gap, and the penetrating type The spacer divides the electrode gap into at least one migration channel; and the columnar inner electrode and the ring-shaped outer electrode are arranged coaxially through the penetrating spacer. The above-mentioned invention can solve the problems that the existing cylindrical transfer tube has a large gap between the inner and outer electrodes, weak ion signals, and it is difficult to guarantee the coaxiality of the inner and outer electrodes.

Description

technical field [0001] The invention relates to the technical field of ion migration, and more specifically relates to a multi-channel high-field asymmetric waveform ion migration tube. Background technique [0002] The transfer tube is an important part of the high-field asymmetric waveform ion mobility spectrometer. By applying a high-voltage asymmetric waveform on the two electrodes of the migration region in the migration tube, when the electric field strength is greater than 10000V / cm, the ion mobility at this time will also change nonlinearly with the change of the electric field strength. In the case of high electric field (electric field strength greater than 10000V / cm), the relationship between ion mobility and electric field strength is shown in the following formula: [0003] K=K 0 [1+α 1 (E / N) 2 +α 2 (E / N) 4 +···] [0004] In the formula, K is the mobility of ions under high electric field, K 0 is the mobility of ions under low electric field, E is the el...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01J49/06
Inventor 唐飞周金力曾悦王晓浩
Owner TSINGHUA UNIV
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