Title:
MASS SPECTROSCOPE
Document Type and Number:
Japanese Patent JP3767317
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To solve problems of difficulties in making an apparatus highly sensitive on account of low average efficiency of ion trapping if ion induction is performed regularly, because efficiency of ions trapped are varied by timings in which ions are induced in a quadrupole ion trap, and the efficiency is dependent on a phase of a high-frequency voltage applied to the quadrupole ion trap, and the trapping efficiency is also dependent on kinetic energy of entering ions.
SOLUTION: The mass spectroscope comprises an ion transport part, to which a pulse voltage is applied, and a quadrupole ion trap.
Inventors:
Hirabayashi Shu
Akihiko Okumura
Akihiko Okumura
Application Number:
JP2000123686A
Publication Date:
April 19, 2006
Filing Date:
April 19, 2000
Export Citation:
Assignee:
株式会社日立製作所
International Classes:
G01N27/62; H01J49/42; (IPC1-7): H01J49/42; G01N27/62
Domestic Patent References:
| JP11513183A | ||||
| JP10012188A | ||||
| JP2001210269A | ||||
| JP11120956A | ||||
| JP11513187A |
Foreign References:
| WO1999039368A1 | ||||
| WO1998011428A1 |
Attorney, Agent or Firm:
Yasuo Sakuta