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1. (WO1997018579) LOW-VACUUM MASS SPECTROMETER
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1997/018579 International Application No.: PCT/IL1996/000149
Publication Date: 22.05.1997 International Filing Date: 13.11.1996
Chapter 2 Demand Filed: 06.06.1997
IPC:
H01J 43/22 (2006.01) ,H01J 49/02 (2006.01)
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
J
ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
43
Secondary-emission tubes; Electron-multiplier tubes
04
Electron multipliers
06
Electrode arrangements
18
Electrode arrangements using essentially more than one dynode
22
Dynodes consisting of electron-permeable material, e.g. foil, grid, tube, venetian blind
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
J
ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
49
Particle spectrometers or separator tubes
02
Details
Applicants:
YEDA RESEARCH AND DEVELOPMENT CO. LTD. [IL/IL]; Weizmann Institute of Science P.O. Box 95 76100 Rehovot, IL (AllExceptUS)
NAAMAN, Ron [IL/IL]; IL (UsOnly)
VAGER, Zeev [IL/IL]; IL (UsOnly)
Inventors:
NAAMAN, Ron; IL
VAGER, Zeev; IL
Agent:
WOLFF, BREGMAN AND GOLLER; P.O. Box 1352 91013 Jerusalem, IL
Priority Data:
11598414.11.1995IL
Title (EN) LOW-VACUUM MASS SPECTROMETER
(FR) SPECTROMETRE DE MASSE A FAIBLE VIDE
Abstract:
(EN) A low-vacuum mass spectrometer includes a drift tube (2) having a gas inlet (4) and an ionization region (6) at one end thereof; a power source (22) for supplying the required high tension; a vacuum pump port (10) connected to the drift tube (2) to maintain a level of vacuum of up to 1 Torr; and a detector (14) located at the other end of the drift tube (2). The detector (14) is a multisphere plate (16) comprised of a multilayer arrangement of beads (18) bonded together in a substantially close-packing order.
(FR) Cette invention concerne un spectromètre de masse à faible vide, qui comporte un tube à glissement (2) ayant un orifice d'entrée (4) du gaz doté à l'une de ses extrémités d'une région d'ionisation (6), une source d'alimentation (22) délivrant la haute tension requise, un orifice (10) de pompe à vide raccordé au tube à glissement (2) pour maintenir le vide à un niveau pouvant atteindre 1 Torr, et un détecteur (14) disposé à l'autre extrémité du tube à glissement (2), ledit détecteur (14) étant une plaque (16) à sphères multiples constituée d'un agencement multicouches de billes (18) reliées entre elles de façon à constituer une structure sensiblement tassée.
Designated States: IL, JP, US
European Patent Office (AT, BE, CH, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
EP0888633US5939613JP2000500275