GB1357263A - Ionization chamber - Google Patents
Ionization chamberInfo
- 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
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.
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)
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)
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)
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 |
-
1971
- 1971-02-02 US US00111910A patent/US3723729A/en not_active Expired - Lifetime
-
1972
- 1972-01-05 GB GB48372A patent/GB1357263A/en not_active Expired
- 1972-02-01 FR FR7203289A patent/FR2124344B1/fr not_active Expired
- 1972-02-01 SE SE01110/72A patent/SE367280B/xx unknown
Cited By (7)
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 |
---|---|
FR2124344B1 (en) | 1976-01-16 |
DE2202588B2 (en) | 1975-06-26 |
FR2124344A1 (en) | 1972-09-22 |
DE2202588A1 (en) | 1972-08-17 |
SE367280B (en) | 1974-05-20 |
US3723729A (en) | 1973-03-27 |
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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 |