Radiant energy – Ionic separation or analysis
Reexamination Certificate
2007-01-23
2007-01-23
Lee, John R. (Department: 2881)
Radiant energy
Ionic separation or analysis
C250S288000, C250S282000, C250S42300F
Reexamination Certificate
active
11006591
ABSTRACT:
The present invention provides a mass spectrometry capable of high-efficiency and high-throughput ECD. An electron source and a two-dimensional combined ion trap in which a magnetic field along and generally parallel to a central axis is applied are used, thereby to achieve the foregoing object. First, precursor ions are trapped. By adopting the two-dimensional combined ion trap, it is possible to obtain a high ion trapping efficiency upon being injected and trapping. Subsequently, electrons are made incident thereon in such a manner as to be wound along the central axis to which no radio frequency is applied by using a magnetic field. For this reason, it is possible to allow energy-controlled electrons to reach the precursor ions. It is possible to implement a mass spectrometer capable of avoiding heating due to a radio frequency electric field, and effecting high-throughput/high-efficiency ECD.
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Baba Takashi
Hashimoto Yuichiro
A. Marquez, Esq. Juan Carlos
Fisher Esq. Stanley P.
Hashmi Zia R.
Hitachi High-Technologies Corporation
Lee John R.
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