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1. 发明授权

US06455845B1 Ion packet generation for mass spectrometer 有权
标题翻译：离子包生成用于质谱仪
公开(公告)号：US06455845B1
公开(公告)日：2002-09-24
申请号：US09552959
申请日：2000-04-20
申请人： Ganggiang Li , Carl A. Myerholtz , George Yefchak
发明人： Ganggiang Li , Carl A. Myerholtz , George Yefchak
IPC分类号： H01J4940
CPC分类号： H01J49/401 , H01J49/403
摘要： A method of providing an ion packet to an analyzer section of a mass spectrometer from an ion beam, a pulser which can execute such a method, and a mass spectrometer which includes such a pulser. In the method, a field pulse is applied to extract an ion packet from the beam at a sideways direction to the beam and provide it to a mass analyzer section of the mass spectrometer, which pulse simultaneously causes non-extracted ions of the beam to be deflected onto an electrode of opposite charge. The pulse ON time is significantly longer than conventionally used. For example, the pulse ON time may be longer than the pulse OFF time or at least twice as long as or several times longer than required to extract the ion packet and provide it to the mass analyzer section, so as to reduce stray ions entering the mass analyzer section. Preferably, the pulse ON time is the time required for ions of a predetermined highest mass of interest to be analyzed by the analyzer section, minus the time required to refill the region of the beam from which the ion packet is extracted with ions of the predetermined highest mass. Ion leakage into the mass spectrometer section between packet extractions, and hence detected noise, can be reduced.
摘要翻译：从离子束向质谱仪的分析器部分提供离子包的方法，可以执行这种方法的脉冲发生器和包括这种脉冲发生器的质谱仪。在该方法中，施加场脉冲以从横梁向束提取离子束，并将其提供给质谱仪的质量分析器部分，该脉冲同时使未提取的离子束成为偏转到相反电荷的电极上。脉冲接通时间比常规使用的时间长得多。例如，脉冲接通时间可以比脉冲关闭时间长，或者比提取离子包所需的时间长至少两倍或几倍，并将其提供给质量分析器部分，以便减少进入质量分析仪。优选地，脉冲接通时间是由分析器部分分析预定最高感兴趣质量的离子所需的时间，减去用预定的离子的离子重新填充离子分组被提取的束的区域所需的时间最高质量。可以减少在包提取之间进入质谱仪部分的离子泄漏，并因此检测噪声。

2. 发明申请

US20050092855A1 Electrospray ion source for mass spectroscopy 有权
标题翻译：电喷雾离子源进行质谱分析
公开(公告)号：US20050092855A1
公开(公告)日：2005-05-05
申请号：US10699448
申请日：2003-10-31
申请人： Ganggiang Li , Paul Goodley , Hongfeng Yin
发明人： Ganggiang Li , Paul Goodley , Hongfeng Yin
IPC分类号： G01N27/62 , B05B5/00 , H01J49/04 , H01J49/10 , H01J49/14 , H01J49/16
CPC分类号： H01J49/167
摘要： The invention provides an electrospray apparatus with an auxiliary electrode, and a method of using.
摘要翻译：本发明提供一种具有辅助电极的电喷射装置及其使用方法。

3. 发明授权

US07204431B2 Electrospray ion source for mass spectroscopy 有权
标题翻译：电喷雾离子源进行质谱分析
公开(公告)号：US07204431B2
公开(公告)日：2007-04-17
申请号：US10699448
申请日：2003-10-31
申请人： Ganggiang Li , Paul C. Goodley , Hongfeng Yin
发明人： Ganggiang Li , Paul C. Goodley , Hongfeng Yin
IPC分类号： A01G23/10
CPC分类号： H01J49/167
摘要： The invention provides an electrospray apparatus with an auxiliary electrode, and a method of using.
摘要翻译：本发明提供一种具有辅助电极的电喷射装置及其使用方法。

4. 发明授权

US06747274B2 High throughput mass spectrometer with laser desorption ionization ion source 失效
标题翻译：具有激光解吸电离离子源的高通量质谱仪
公开(公告)号：US06747274B2
公开(公告)日：2004-06-08
申请号：US09919654
申请日：2001-07-31
申请人： Ganggiang Li
发明人： Ganggiang Li
IPC分类号： B01D5944
CPC分类号： H01J49/164 , H01J49/107 , H01J49/40
摘要： A high-throughput laser desorption/ionization (LDI) mass spectrometer has been developed and is described herein. The mass spectrometer employs an ion source that has a plurality of lasers firing in tandem at one or more samples to increase the rate at which ion packets are generated by the ion source.
摘要翻译：已经开发了高通量激光解吸/电离（LDI）质谱仪，并在此描述。质谱仪采用离子源，其具有在一个或多个样品上串联烧制的多个激光器，以增加离子源由离子源产生的速率。

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