Mass spectrometer and methods of mass spectrometry

专利名称：Mass spectrometer and methods of mass

spectrometry

发明人：Green, Martin,Jackson, Michael申请号：EP01310018.5申请日：20011129公开号：EP1215711A3公开日：20040428

专利附图：

摘要：A way of increasing the dynamic range of a mass spectrometer which

incorporates a time to digital converter such as commonly used with a time of flight massanalyser 9 is disclosed. A z-lens 4 upstream of the analyser 9 can be switched between a

high sensitivity mode wherein a beam of ions 2 passing therethrough is substantiallyfocused on to the entrance slit 10 of the analyser 9, and a low sensitivity mode whereinthe beam of ions 2 is defocused so that the diameter of the beam substantially exceedsthat of the entrance slit 10 of the analyser 9. Obtaining data in the low sensitivity mode incombination with obtaining data in the high sensitivity mode enable an order ofmagnitude increase in the dynamic range to be obtained.

申请人：Micromass UK Limited

地址：Atlas Park, Simonsway Manchester M22 5PP GB

国籍：GB

代理机构：Jeffrey, Philip Michael

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