GB1404754A - Electron capture detector systems - Google Patents

Electron capture detector systems

Info

Publication number
GB1404754A
GB1404754A GB3702571A GB3702571A GB1404754A GB 1404754 A GB1404754 A GB 1404754A GB 3702571 A GB3702571 A GB 3702571A GB 3702571 A GB3702571 A GB 3702571A GB 1404754 A GB1404754 A GB 1404754A
Authority
GB
United Kingdom
Prior art keywords
detector
potential
electron capture
gas
detecting means
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
GB3702571A
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.)
Lovelock J E
Original Assignee
Lovelock J E
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 Lovelock J E filed Critical Lovelock J E
Priority to GB3702571A priority Critical patent/GB1404754A/en
Priority to US421615A priority patent/US3892968A/en
Publication of GB1404754A publication Critical patent/GB1404754A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/62—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode
    • G01N27/64—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode using wave or particle radiation to ionise a gas, e.g. in an ionisation chamber
    • G01N27/66—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode using wave or particle radiation to ionise a gas, e.g. in an ionisation chamber and measuring current or voltage

Abstract

1404754 Electron capture detector system J E LOVELOCK 25 Sept 1972 [6 Aug 1971] 37025/71 Heading G1N In an electron capture gas detecting system, two detectors A, B are arranged so that gas flows from A into B, detector A being supplied with a potential which varies between minimum and maximum values and the output of detector B being applied to detecting means. As shown, the potential applied to detector A cyclically varies between zero and 100 volts. When the high voltage is applied and the incoming gas contains a strong electron absorber no ionization occurs in detector A and detector B responds as if A was absent. At zero potential, electrons are removed from the gas and detector B provides an increased signal. The signal from B is then moduated in the cycle of the applied potential whenever a strong electron absorber is present, a synchronous detecting means being provided.
GB3702571A 1971-08-06 1971-08-06 Electron capture detector systems Expired GB1404754A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB3702571A GB1404754A (en) 1971-08-06 1971-08-06 Electron capture detector systems
US421615A US3892968A (en) 1971-08-06 1973-12-04 Electron capture detector systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3702571A GB1404754A (en) 1971-08-06 1971-08-06 Electron capture detector systems

Publications (1)

Publication Number Publication Date
GB1404754A true GB1404754A (en) 1975-09-03

Family

ID=10393120

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3702571A Expired GB1404754A (en) 1971-08-06 1971-08-06 Electron capture detector systems

Country Status (1)

Country Link
GB (1) GB1404754A (en)

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Legal Events

Date Code Title Description
PS Patent sealed
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PE20 Patent expired after termination of 20 years