Title:
ELECTROSTATIC ION TRAP
Document Type and Number:
Japanese Patent JP2015072902
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide an ion trap which suppresses spectral noise and reduces baseline offsets and loss of spectral resolution even at higher pressure.SOLUTION: An ion trap includes: an electrode structure which includes a first and a second opposed mirror electrodes 6, 7 and a central lens 3 between the mirror electrodes 6, 7 and produces an electrostatic potential in which ions are confined to trajectories at natural oscillation frequencies, the confining potential being anharmonic. The ion trap also includes an AC excitation source 21 having an excitation frequency f that excites confined ions at a frequency of about twice the natural oscillation frequency of the ions, the AC excitation frequency source preferably being connected to the central lens 3.
Inventors:
GERANDO A BRUCKER
KENNETH D VAN ANTWERP
G JEFFERY RATHBONE
SCOTT C HEINBUCH
MICHAEL N SCHOTT
ALEXEI ERMAKOV
BARBARA JANE HINCH
KENNETH D VAN ANTWERP
G JEFFERY RATHBONE
SCOTT C HEINBUCH
MICHAEL N SCHOTT
ALEXEI ERMAKOV
BARBARA JANE HINCH
Application Number:
JP2014183890A
Publication Date:
April 16, 2015
Filing Date:
September 10, 2014
Export Citation:
Assignee:
MKS INSTR INC
International Classes:
H01J49/28; G01N27/62; H01J49/06
Domestic Patent References:
| JPH10233187A | 1998-09-02 | |||
| JP2006286210A | 2006-10-19 | |||
| JP2002517888A | 2002-06-18 |
Foreign References:
| WO2008063497A2 | 2008-05-29 |
Attorney, Agent or Firm:
Shuji Sugimoto
Masashi Noda
Kenro Tsutsumi
Kumiko Hayashida
Masashi Noda
Kenro Tsutsumi
Kumiko Hayashida
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