EP 0633602 B1 20000524 - High sensitivity, wide dynamic range time-of-flight mass spectrometer provided with a gas phase ion source
Title (en)
High sensitivity, wide dynamic range time-of-flight mass spectrometer provided with a gas phase ion source
Title (de)
Flugzeit-Massenspektrometer mit Gasphasen-Ionenquelle, mit hoher Empfindlichkeit und grossem dynamischem Bereich
Title (fr)
Spectromètre de masse à temps de vol pourvu d'une source d'ions en phase gaseuze présentant une sensibilité élevée ainsi qu'une large gamme dynamique
Publication
Application
Priority
DE 4322102 A 19930702
Abstract (en)
[origin: EP0633602A2] A high particle density in the exhaust volume of a gas-phase ion source and simultaneously a very low particle density in the flight path of the time-of-flight mass spectrometer results in a high sensitivity while simultaneously maintaining a large dynamic range of the intensity display. In order to achieve this, it is necessary to divide the time-of-flight mass spectrometer into two or more regions of different pressure, the different regions being separated by a gas-flow impedance. A maximum particle density in the exhaust volume while simultaneously maintaining a minimum particle density in the flight path can be obtained by integrating the gas-flow impedances (3, 6) directly into the electrodes (1, 2) of the ion source. <IMAGE>
IPC 1-7
IPC 8 full level
G01N 27/62 (2006.01); H01J 27/02 (2006.01); H01J 49/04 (2006.01); H01J 49/10 (2006.01); H01J 49/40 (2006.01)
CPC (source: EP US)
H01J 49/0422 (2013.01 - EP US); H01J 49/403 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE DK FR GB LI NL SE
DOCDB simple family (publication)
EP 0633602 A2 19950111; EP 0633602 A3 19951122; EP 0633602 B1 20000524; AT E193398 T1 20000615; AU 6615294 A 19950112; AU 6615394 A 19950112; AU 685112 B2 19980115; AU 685113 B2 19980115; CA 2127183 A1 19950103; DE 4322102 A1 19950119; DE 4322102 C2 19950817; DE 59409371 D1 20000629; JP H07176291 A 19950714; US 5496998 A 19960305
DOCDB simple family (application)
EP 94110273 A 19940701; AT 94110273 T 19940701; AU 6615294 A 19940701; AU 6615394 A 19940701; CA 2127183 A 19940630; DE 4322102 A 19930702; DE 59409371 T 19940701; JP 15248994 A 19940704; US 26954494 A 19940701