Title:
ION EXCITATION METHOD IN LINEAR ION TRAP
Document Type and Number:
WIPO Patent Application WO/2016/141733
Kind Code:
A1
Abstract:
The present invention relates to the technical field of mass analysis instruments. Disclosed is an ion excitation method in a linear ion trap. The method comprises: in a linear ion trap, and at an ion collision-induced dissociation stage, simultaneously applying an auxiliary excitation signal in radial X and Y directions thereof; increasing the kinetic energy of ions in the two directions, thereby increasing collisions with a center gas to cause dissociation; and converting the kinetic energy to internal energy to achieve tandem mass spectrometry analysis. The kinetic energy in the X and Y directions of the ion is increased, and compared to a conventional dissociation method in which ions are primarily excited in one direction, more kinetic energy is converted to internal energy, thus improving dissociation efficiency, shortening reaction time, and addressing a low mass cutoff effect in the ion trap.
Inventors:
DANG QIANKUN (CN)
XIE XIAODONG (CN)
XU FUXING (CN)
CHEN YINJUAN (CN)
DING CHUANFAN (CN)
XIE XIAODONG (CN)
XU FUXING (CN)
CHEN YINJUAN (CN)
DING CHUANFAN (CN)
Application Number:
PCT/CN2015/095259
Publication Date:
September 15, 2016
Filing Date:
November 23, 2015
Export Citation:
Assignee:
UNIV FUDAN (CN)
International Classes:
H01J49/10
Foreign References:
| CN103354203A | 2013-10-16 | |||
| CN104810235A | 2015-07-29 |
Attorney, Agent or Firm:
SHANGHAI HUAGONG PATENT AGENCY (CN)
上海华工专利事务所（普通合伙） (CN)
上海华工专利事务所（普通合伙） (CN)
Download PDF: