EP 0919067 B1 20001129 - CHARGED PARTICLE VELOCITY ANALYSER
Title (en)
CHARGED PARTICLE VELOCITY ANALYSER
Title (de)
GESCHWINDIGKEITSANALYSATOR GELADENER TEILCHEN
Title (fr)
ANALYSEUR DE VITESSE DE PARTICULES CHARGEES
Publication
Application
Priority
- GB 9702182 W 19970818
- GB 9617312 A 19960817
Abstract (en)
[origin: WO9808244A2] An ion velocity analyser 10 comprises a source (12) of ions, which source is in a vacuum. The ions are focused into a beam by a series of electrostatic lenses in the focus section (14) of the ion velocity analyser (10). The beam is modulated by a deflector (16) to give a pseudo-random binary signal having pulses of variable length. The modulator beam travels down in an evacuated drift tube (18) having a chosen electrostatic potential to a detector (20). The signal from the detector (20) is amplified and the signal intensity feature of an array of time channels is measured and recorded by a multichannel analyser (22); the resultant signal is a convolution of the pseudo-random binary signal and the time of flight spectrum of the ion sample. The signal from the detector is cross-correlated with the modulated signal and deconvoluted to give a time of flight spectrum for the ion sample. The time of flight spectrum is then inverted to give a mass spectrum.
IPC 1-7
IPC 8 full level
H01J 49/40 (2006.01)
CPC (source: EP)
H01J 49/0031 (2013.01); H01J 49/022 (2013.01); H01J 49/40 (2013.01)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
WO 9808244 A2 19980226; WO 9808244 A3 19980409; DE 69703624 D1 20010104; DE 69703624 T2 20010628; EP 0919067 A2 19990602; EP 0919067 B1 20001129; GB 9617312 D0 19960925
DOCDB simple family (application)
GB 9702182 W 19970818; DE 69703624 T 19970818; EP 97936783 A 19970818; GB 9617312 A 19960817