Title:
低圧力短時間高振幅励起を提供するために線形イオントラップを動作する方法
Document Type and Number:
Japanese Patent JP2011511401
Kind Code:
A
Abstract:
In accordance with an aspect of an embodiment of the present invention, there is provided a method for fragmenting ions in an ion trap of a mass spectrometer. The method comprises a) selecting parent ions for fragmentation; b) retaining the parent ions within the ion trap for a retention time interval, the ion trap having an operating pressure of less than about 1×10−4 Torr; c) providing a RF trapping voltage to the ion trap to provide a Mathieu stability parameter q at an excitement level during an excitement time interval within the retention time interval; d) providing a resonant excitation voltage to the ion trap during the excitement time interval to excite and fragment the parent ions; and, e) within the retention time interval and after the excitement time interval, terminating the resonant excitation voltage and changing the RF trapping voltage applied to the ion trap to reduce the Mathieu stability parameter q to a hold level less than the excitement level to retain fragments of the parent ions within the ion trap.
Inventors:
Guna, Millsea
Le blank, eve
Le blank, eve
Application Number:
JP2010544543A
Publication Date:
April 07, 2011
Filing Date:
January 26, 2009
Export Citation:
Assignee:
DA Technologies Development Private Limited
International Classes:
H01J49/42; G01N27/62; H01J49/26
Domestic Patent References:
| JP2006524413A | 2006-10-26 | |||
| JP2005522845A | 2005-07-28 |
Foreign References:
| WO2007144627A2 | 2007-12-21 | |||
| WO2006031896A1 | 2006-03-23 |
Attorney, Agent or Firm:
Hidesaku Yamamoto
Takaaki Yasumura
Natsuki Morishita
Takaaki Yasumura
Natsuki Morishita