GB1357263A - Ionization chamber - Google Patents

Ionization chamber

Info

Publication number
GB1357263A
GB1357263A GB48372A GB48372A GB1357263A GB 1357263 A GB1357263 A GB 1357263A GB 48372 A GB48372 A GB 48372A GB 48372 A GB48372 A GB 48372A GB 1357263 A GB1357263 A GB 1357263A
Authority
GB
United Kingdom
Prior art keywords
electrodes
conductive
ionization chamber
supported
filaments
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
GB48372A
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.)
HP Inc
Original Assignee
Hewlett Packard 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 Hewlett Packard Co filed Critical Hewlett Packard Co
Publication of GB1357263A publication Critical patent/GB1357263A/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
    • H01J49/14—Ion sources; Ion guns using particle bombardment, e.g. ionisation chambers

Landscapes

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

Abstract

1357263 lon sources HEWLETT-PACKARD CO 5 Jan 1972 [2 Feb 1971] 483/72 Heading H1D An ionization chamber comprises tubular, coaxial electrodes 12, 14 each having an electrically-conductive, gas-transmissive membrane 16, 18 across an end, the space 20 between the membranes constituting an ionization region which is surrounded by arcuate filaments 26, 26a and arcuate focusing electrodes 28, 28a. Electrons emitted by one or both of the filaments are focused into a sheet between the membranes and collide with molecules of a gas sample fed to the ionization region through glass tubes 22a (one only shown). The potentials on the electrodes 12, 14 are such that ionized molecules move through the membrane 18 (which may, e.g. be perforated) and subsequently along the axis of a focusing electrode 38. The various electrodes are supported by metallic rods of which only two, 30, 30c are shown in Fig. 1. The rods extend through an insulating support member 32 into socket connectors 42 which are, in turn, supported from a structure 40. The latter includes a conductive tube 48 adapted to slide into the vacuum port of a mass spectrometer. A conductive plate 34 shields the member 32 from conductive deposition. The ionization chamber may be heated by means of a coil 50 or cooled by means of a coolant passed through tubes 54, 56.
GB48372A 1971-02-02 1972-01-05 Ionization chamber Expired GB1357263A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11191071A 1971-02-02 1971-02-02

Publications (1)

Publication Number Publication Date
GB1357263A true GB1357263A (en) 1974-06-19

Family

ID=22341083

Family Applications (1)

Application Number Title Priority Date Filing Date
GB48372A Expired GB1357263A (en) 1971-02-02 1972-01-05 Ionization chamber

Country Status (4)

Country Link
US (1) US3723729A (en)
FR (1) FR2124344B1 (en)
GB (1) GB1357263A (en)
SE (1) SE367280B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2201289A (en) * 1986-10-15 1988-08-24 Vestec Corp Method and apparatus for dissociating ions by electron impact
WO2014076248A2 (en) * 2012-11-16 2014-05-22 Thermo Fisher Scientific (Bremen) Gmbh Ion source assembly for static mass spectrometer

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3766396A (en) * 1972-11-09 1973-10-16 Hewlett Packard Co Ion source
GB8603999D0 (en) * 1986-02-18 1986-03-26 Vg Instr Group Vacuum monitoring apparatus
US4816685A (en) * 1987-10-23 1989-03-28 Lauronics, Inc. Ion volume ring
US5083450A (en) * 1990-05-18 1992-01-28 Martin Marietta Energy Systems, Inc. Gas chromatograph-mass spectrometer (gc/ms) system for quantitative analysis of reactive chemical compounds
US5506412A (en) * 1994-12-16 1996-04-09 Buttrill, Jr.; Sidney E. Means for reducing the contamination of mass spectrometer leak detection ion sources
US7709790B2 (en) * 2008-04-01 2010-05-04 Thermo Finnigan Llc Removable ion source that does not require venting of the vacuum chamber

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2975277A (en) * 1955-05-10 1961-03-14 Vakutronik Veb Ion source
GB961334A (en) * 1961-09-04 1964-06-17 Ass Elect Ind Improvements relating to ion sources for mass spectrometers
US3155826A (en) * 1961-12-29 1964-11-03 John L Peters Mass spectrometer leak detector including a novel repeller-heater assembly
US3307033A (en) * 1963-07-19 1967-02-28 William H Johnston Lab Inc Coincidence mass spectrometer with electrostatic means to separate positive and negative ions and detectors and method of use
GB1102462A (en) * 1963-10-31 1968-02-07 Ass Elect Ind Improvements relating to mass spectrometer ion sources
US3356843A (en) * 1965-02-01 1967-12-05 Gen Electric Mass spectrometer electron beam ion source having means for focusing the electron beam
US3423584A (en) * 1966-03-23 1969-01-21 Varian Associates Spectrometer ion source having two filaments each alternately acting as emitter and collector

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2201289A (en) * 1986-10-15 1988-08-24 Vestec Corp Method and apparatus for dissociating ions by electron impact
GB2201289B (en) * 1986-10-15 1990-09-12 Vestec Corp Method and apparatus for dissociating ions by electron impact
WO2014076248A2 (en) * 2012-11-16 2014-05-22 Thermo Fisher Scientific (Bremen) Gmbh Ion source assembly for static mass spectrometer
GB2510100A (en) * 2012-11-16 2014-07-30 Thermo Fisher Scient Bremen Ion source assembly for a static mass spectrometer
WO2014076248A3 (en) * 2012-11-16 2014-10-02 Thermo Fisher Scientific (Bremen) Gmbh Ion source assembly for static mass spectrometer
US9472389B2 (en) 2012-11-16 2016-10-18 Thermo Fisher Scientific (Bremen) Gmbh Ion source assembly for static mass spectrometer
GB2510100B (en) * 2012-11-16 2018-11-28 Thermo Fisher Scient Bremen Gmbh Ion source assembly for static mass spectrometer

Also Published As

Publication number Publication date
FR2124344A1 (en) 1972-09-22
US3723729A (en) 1973-03-27
SE367280B (en) 1974-05-20
DE2202588A1 (en) 1972-08-17
DE2202588B2 (en) 1975-06-26
FR2124344B1 (en) 1976-01-16

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee