GB776029A - Improvements relating to mass spectrometers - Google Patents

Improvements relating to mass spectrometers

Info

Publication number
GB776029A
GB776029A GB4518/55A GB451855A GB776029A GB 776029 A GB776029 A GB 776029A GB 4518/55 A GB4518/55 A GB 4518/55A GB 451855 A GB451855 A GB 451855A GB 776029 A GB776029 A GB 776029A
Authority
GB
United Kingdom
Prior art keywords
carrier
plate
filament
shaft
electrodes
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB4518/55A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
General Electric Co
Original Assignee
General Electric Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by General Electric Co filed Critical General Electric Co
Publication of GB776029A publication Critical patent/GB776029A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J49/00—Particle spectrometers or separator tubes
    • H01J49/02—Details
    • H01J49/10—Ion sources; Ion guns
    • H01J49/16—Ion sources; Ion guns using surface ionisation, e.g. field-, thermionic- or photo-emission

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
  • Electron Tubes For Measurement (AREA)

Abstract

776,029. Mass spectrometers. GENERAL ELECTRIC CO. Feb. 15, 1955 [Feb. 15, 1954], No. 4518/55. Class 39(1). A mass spectrometer with a multiple thermionic ion specimen source includes a rotatable carrier 17, Figs. 2, 4, and a plurality of filaments 25 supported individually in holders 19 which are detachably located around the periphery of the carrier. Each holder 19 consists of an insulating block and end plates 21, 23 which support the filament and provide the electrical contacts. Connection to the top and plate is made by an assembly 63 which includes a leafspring 4, Fig. 2, and to the bottom plate by a contact 58 at the end of a pivoted plate 48. Each insulating block has a transverse slot 33, Fig. 2, to prevent deposited metal from short circuiting the end plates. The slot 33 opens into a hole 35, Fig. 4. The carrier is rotated by a rack and pinion 76 which is operated by means of a shaft 26 and bellows 22. In another embodiment the carrier is rotated by means of bevel gears. Pivoted plate 48 has a tapered hole 46 for engaging the carrier shaft, and is actuated by means of shaft 64 and bellows 68 to lock the carrier and to force electrical contact 58 into engagement with the end plate of the filament holder. The filament is aligned with slits in the focusing and accelerating electrodes, Figs. 3, 4. These electrodes are supported and spaced by insulating spacers 99. Beam centering plates 77, 79 are mounted on electrodes 65, 69.
GB4518/55A 1954-02-15 1955-02-15 Improvements relating to mass spectrometers Expired GB776029A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US776029XA 1954-02-15 1954-02-15
US410270A US2756341A (en) 1954-02-15 1954-02-15 Multiple cartridge source for mass spectrometer

Publications (1)

Publication Number Publication Date
GB776029A true GB776029A (en) 1957-05-29

Family

ID=26759458

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4518/55A Expired GB776029A (en) 1954-02-15 1955-02-15 Improvements relating to mass spectrometers

Country Status (2)

Country Link
US (1) US2756341A (en)
GB (1) GB776029A (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3140393A (en) * 1961-03-22 1964-07-07 List Hans Apparatus for the irradiation or vacuum-coating of specimens
US3117223A (en) * 1961-06-09 1964-01-07 Atlas Werke Ag Sample insertion vacuum lock for a mass spectrometer
US3230362A (en) * 1963-12-03 1966-01-18 Gen Electric Bakeable mass spectrometer with means to precisely align the ion source, analyzer and detector subassemblies
FR1398135A (en) * 1964-03-27 1965-05-07 Commissariat Energie Atomique Process for stabilizing thermionic sources and thermionic source in accordance with those obtained by applying said process or a similar process
DE1498547A1 (en) * 1964-07-30 1969-05-22 Varian Mat Gmbh Device for substance investigation through evaporation, ionization and ion current measurement
US3831026A (en) * 1966-05-17 1974-08-20 P Powers Plural beam mass spectrometer and method of conducting plural beam studies
US3590243A (en) * 1969-06-30 1971-06-29 Avco Corp Sample insertion vacuum lock and probe assembly for mass spectrometers
US3896661A (en) * 1974-01-09 1975-07-29 Stanford Research Inst Method of coupling thin layer chromatograph with mass spectrometer
DE3329401A1 (en) * 1983-08-13 1985-02-28 Finnigan MAT GmbH, 2800 Bremen METHOD AND DEVICE FOR HEATING IONIZING TAPES
JPS61107643A (en) * 1984-10-30 1986-05-26 Hitachi Ltd Ion source with evaporator furnace
US4745277A (en) * 1986-10-06 1988-05-17 The United States Of America As Represented By The United States Department Of Energy Rotary turret and reusable specimen holder for mass spectrometer

Also Published As

Publication number Publication date
US2756341A (en) 1956-07-24

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