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1. WO2005098899 - MASS SPECTROMETER

Publication Number WO/2005/098899
Publication Date 20.10.2005
International Application No. PCT/GB2005/001290
International Filing Date 04.04.2005
IPC
H01J 49/04 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
49Particle spectrometers or separator tubes
02Details
04Arrangements for introducing or extracting samples to be analysed, e.g. vacuum locks; Arrangements for external adjustment of electron- or ion-optical components
H01J 49/26 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
49Particle spectrometers or separator tubes
26Mass spectrometers or separator tubes
G01T 1/36 2006.01
GPHYSICS
01MEASURING; TESTING
TMEASUREMENT OF NUCLEAR OR X-RADIATION
1Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
36Measuring spectral distribution of X-rays or of nuclear radiation
CPC
H01J 49/06
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
49Particle spectrometers or separator tubes
02Details
06Electron- or ion-optical arrangements
Y10T 436/24
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
10TECHNICAL SUBJECTS COVERED BY FORMER USPC
TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
436Chemistry: analytical and immunological testing
24Nuclear magnetic resonance, electron spin resonance or other spin effects or mass spectrometry
Applicants
  • MICROMASS UK LIMITED [GB]/[GB] (AllExceptUS)
  • GREEN, Martin [GB]/[GB] (UsOnly)
  • WILDGOOSE, Jason, Lee [GB]/[GB] (UsOnly)
  • PRINGLE, Steven, Derek [GB]/[GB] (UsOnly)
  • GILES, Kevin [GB]/[GB] (UsOnly)
Inventors
  • GREEN, Martin
  • WILDGOOSE, Jason, Lee
  • PRINGLE, Steven, Derek
  • GILES, Kevin
Agents
  • JEFFREY, Philip, Michael
Priority Data
0407713.705.04.2004GB
0411372.621.05.2004GB
60/573,46821.05.2004US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) MASS SPECTROMETER
(FR) SPECTROMETRE DE MASSE
Abstract
(EN)
A mass spectrometer is disclosed comprising an ion beam attenuator which attenuates an ion beam repeatedly switching between a zero transmission mode of operation during a time period &Dgr;T1 and a non-zero transmission mode of operation during a time period &Dgr;T2. The degree of attenuation of the ion beam can be varied by varying the mark space ratio &Dgr;T2/&Dgr;T1. The ion beam attenuator may release ions in packets or pulses but the packets or pulses of ions may be converted into a continuous ion beam by a relatively high pressure ion guide or gas collision cell arranged downstream of the ion beam attenuator.
(FR)
La présente invention concerne un spectromètre de masse comprenant un atténuateur de faisceau ionique qui atténue un faisceau ionique commutant de manière répétée entre un mode d'émission zéro de fonctionnement pendant une durée ?T1 et un mode d'émission non zéro de fonctionnement pendant une durée ?T2. Le degré d'atténuation de ce faisceau ionique peut être modifié par la variation du rapport marque espace ?T2/?T1. L'atténuateur de faisceau ionique peut libérer des ions par paquets ou par impulsions mais ces paquets où ces impulsions d'ions peuvent être transformés en un faisceau d'ions continu par un guide d'ions de relativement haute pression ou par une chambre de collision de gaz agencée en aval de l'atténuateur de faisceau ionique.
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