Mass spectrometer

Details Mass spectrometer Mass spectrometer

2006-10-17

2009-06-23

Berman, Jack I (Department: 2881)

Radiant energy

Ionic separation or analysis

C250S282000, C250S288000, C250S492210, C073S864220, C073S864210, C422S064000, C422S070000, C436S086000

Reexamination Certificate

active

07550716

ABSTRACT:
The present invention provides a mass spectrometer capable of breaking even a sample molecule having a large molecular weight by a CID process. In an embodiment of the present invention, the mass spectrometer includes an ionizing source10for turning a sample into ions, mass-separating sections40and60for mass-separating the sample ions, a detecting section20for detecting the mass-separated ions, and a collision section (collision cell)51located on an ion path extending from the ionizing source10through the mass-separating sections40and60to the detecting section20. It also includes a cluster generator30for producing clusters of atoms or molecules. The clusters produced by the cluster generator30are introduced into the collision cell51. The use of the clusters having a huge mass as the target gas in the CID process enables the collision energy of the sample ions to be efficiently assigned to the breaking of the ions.

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patent: 2002-184349 (2002-06-01), None
Yasuo Shida et al., “Korenara Wakaru Masu-Supekutorometorii (For Learners of Mass Spectrometry)” Kagaku-dojin Publishing Company, cited in specification of U.S. Appl. No. 11/581,574.

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