Global Patent Index - EP 0817239 B1

EP 0817239 B1 20030611 - Ion trapping mass spectrometry apparatus

Title (en)

Ion trapping mass spectrometry apparatus

Title (de)

Ionenspeicherungsvorrichtung für Massenspektrometrie

Title (fr)

Dispositif de stockage d'ions à des fins de spectrométrie de masse


EP 0817239 B1 20030611 (EN)


EP 97111068 A 19970702


JP 17202396 A 19960702

Abstract (en)

[origin: EP0817239A1] A mass spectrometry apparatus having a constitution for attaining analysis with high sensitivity and high resolving power comprising a linear radio-frequency quadrupole ion trap and means for avoiding degradation of analysis performance due to field disturbance caused by an end electrode (13, 14) thereof, where said purpose is achieved by means for forming a harmonic potential in the central axis thereof in whose potential ions are resonantly oscillated to be ejected outside of the ion trap for detection along the axis, or by means to eliminate undesirably degraded signals originating near the ion trap portions that are disturbed by the end electrodes (13, 14). <IMAGE>

IPC 1-7

H01J 49/42

IPC 8 full level

H01J 49/26 (2006.01); H01J 49/42 (2006.01)

CPC (source: EP)

H01J 49/4225 (2013.01); H01J 49/423 (2013.01)

Designated contracting state (EPC)


DOCDB simple family (publication)

EP 0817239 A1 19980107; EP 0817239 B1 20030611; DE 69722717 D1 20030717; DE 69722717 T2 20040429; JP 3495512 B2 20040209; JP H1021871 A 19980123

DOCDB simple family (application)

EP 97111068 A 19970702; DE 69722717 T 19970702; JP 17202396 A 19960702