GB783211A - Improvements relating to mass spectrometers - Google Patents
Improvements relating to mass spectrometersInfo
- Publication number
- GB783211A GB783211A GB15128/55A GB1512855A GB783211A GB 783211 A GB783211 A GB 783211A GB 15128/55 A GB15128/55 A GB 15128/55A GB 1512855 A GB1512855 A GB 1512855A GB 783211 A GB783211 A GB 783211A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ionization chamber
- leak
- sample reservoir
- fractionating
- heating coil
- 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
- H01J49/04—Arrangements for introducing or extracting samples to be analysed, e.g. vacuum locks; Arrangements for external adjustment of electron- or ion-optical components
- H01J49/0468—Arrangements for introducing or extracting samples to be analysed, e.g. vacuum locks; Arrangements for external adjustment of electron- or ion-optical components with means for heating or cooling the sample
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J49/00—Particle spectrometers or separator tubes
- H01J49/02—Details
- H01J49/04—Arrangements for introducing or extracting samples to be analysed, e.g. vacuum locks; Arrangements for external adjustment of electron- or ion-optical components
- H01J49/0422—Arrangements for introducing or extracting samples to be analysed, e.g. vacuum locks; Arrangements for external adjustment of electron- or ion-optical components for gaseous samples
Landscapes
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
Abstract
783,211. Mass spectrometers. GENERAL ELECTRIC CO. May 25, 1955 [May 26, 1954], No. 15128/55. Class 39(1). Changes in pressure in the sample reservoir 25 or a mass spectrometer which are due to a temperature difference between the reservoir and the ionization chamber 27 maintained at different temperatures, are minimized by arranging the temperature gradient to fall between the ionization chamber and the leak 29. A part 32 of a heating coil 31 for the sample reservoir extends to the leak. Ionization chamber 27 has a heating coil 36 and a housing 30 provides heat insulated compartments. The proportion between the two heating currents may be kept constant when the absolute coupling values are altered. In an arrangement in which the ionization chamber is heated while the sample reservoir is kept at room temperature, a suitable length of flow tube is provided between the ionization chamber and the leak. The leak may be of the molecular flow type, or of the viscous, fractionating or non-fractionating type. A detailed analysis is given of the effects of thermal transpiration produced by thermal gradients in the gas inlet tube of the spectrometer. Specifications 632,963 and 698,850 are referred to.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US783211XA | 1954-05-26 | 1954-05-26 | |
US1132049XA | 1954-05-26 | 1954-05-26 | |
US432510A US2788451A (en) | 1954-05-26 | 1954-05-26 | Mass spectrometer sample inlet system |
Publications (1)
Publication Number | Publication Date |
---|---|
GB783211A true GB783211A (en) | 1957-09-18 |
Family
ID=27617427
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB15128/55A Expired GB783211A (en) | 1954-05-26 | 1955-05-25 | Improvements relating to mass spectrometers |
Country Status (2)
Country | Link |
---|---|
FR (1) | FR1132049A (en) |
GB (1) | GB783211A (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2408909A1 (en) * | 1977-11-15 | 1979-06-08 | Commissariat Energie Atomique | SOURCE OF METAL STEAM WITH ADJUSTABLE FLOW AND APPLICATION TO IONIC ANALYZERS |
FR2581246B1 (en) * | 1985-04-24 | 1987-07-10 | Cogema | METHOD AND DEVICE FOR INTRODUCING SAMPLES FOR MASS SPECTROMETER |
-
1955
- 1955-05-25 FR FR1132049D patent/FR1132049A/en not_active Expired
- 1955-05-25 GB GB15128/55A patent/GB783211A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR1132049A (en) | 1957-03-04 |
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