GB783211A - Improvements relating to mass spectrometers - Google Patents

Improvements relating to mass spectrometers

Info

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
Application number
GB15128/55A
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
Priority claimed from US432510A external-priority patent/US2788451A/en
Application filed by General Electric Co filed Critical General Electric Co
Publication of GB783211A publication Critical patent/GB783211A/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
    • H01J49/04—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.
GB15128/55A 1954-05-26 1955-05-25 Improvements relating to mass spectrometers Expired GB783211A (en)

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)

* Cited by examiner, † Cited by third party
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

Also Published As

Publication number Publication date
FR1132049A (en) 1957-03-04

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