发明名称 |
Real-time trace detection by high field and low field ion mobility and mass spectrometry |
摘要 |
A trace detection system includes at least two stages coupled to operate in series. An ion mobility spectrometer (IMS) stage has a sampling inlet to receive a sample to be analyzed. An ion source ionizes the sample. The IMS applies an electrical field to the ionized sample to move the ionized sample toward an IMS outlet. A differential mobility spectrometer (DMS) stage coupled in series with the IMS stage receives the ionized sample from the IMS stage. Preferably, the system includes a mass spectrometer (MS) stage coupled in series with the DMS stage to receive the ionized sample from the DMS stage via a vacuum interface. A roughing vacuum pump evacuates a first stage of the MS stage to a first pressure below atmospheric pressure. A high vacuum pump evacuates a second stage of the MS stage to a second pressure below the first pressure. |
申请公布号 |
US8173959(B1) |
申请公布日期 |
2012.05.08 |
申请号 |
US20070941939 |
申请日期 |
2007.11.17 |
申请人 |
BOUMSELLEK SAID;KUEHN THOMAS J.;IMPLANT SCIENCES CORPORATION |
发明人 |
BOUMSELLEK SAID;KUEHN THOMAS J. |
分类号 |
H01J49/26 |
主分类号 |
H01J49/26 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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