JPS5791449A - Detector of trace of ion - Google Patents

Detector of trace of ion

Info

Publication number
JPS5791449A
JPS5791449A JP55169225A JP16922580A JPS5791449A JP S5791449 A JPS5791449 A JP S5791449A JP 55169225 A JP55169225 A JP 55169225A JP 16922580 A JP16922580 A JP 16922580A JP S5791449 A JPS5791449 A JP S5791449A
Authority
JP
Japan
Prior art keywords
electrode
collector
filament
dark current
flowing
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.)
Pending
Application number
JP55169225A
Other languages
Japanese (ja)
Inventor
Kazuhiro Ueda
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP55169225A priority Critical patent/JPS5791449A/en
Publication of JPS5791449A publication Critical patent/JPS5791449A/en
Pending 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
    • G01N27/626—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 heat to ionise a gas

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)

Abstract

PURPOSE:To prevent a signal current obtained from a collector electrode from being disturbed by a dark current and to improve S/N, by flowing the dark current flowing in the collector electrode through insulating bushings to a guard electrode arranged around the collector electrode. CONSTITUTION:A filament 2 ionizing a trace of Na by thermal dissociation is arranged in a housing 1 flowing out the gas to be inspected and a collector electrode 3 collecting generated ions is provided appasite to the filament 2. The filament 2 and the electrode 3, are insulated from the housing 1 by insulating bushings 4, 5 to hold them and also, a guard electrode 10 held by a bushing 11 is provided around the electrode 3. Then, the electrode 10 and the electrode 3 are maintained in the same potential without interposing the detection resistance and a dark current at the time of applying collector voltage is flowed to the electrode 10 through the bushings 4 and 11.
JP55169225A 1980-11-28 1980-11-28 Detector of trace of ion Pending JPS5791449A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55169225A JPS5791449A (en) 1980-11-28 1980-11-28 Detector of trace of ion

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55169225A JPS5791449A (en) 1980-11-28 1980-11-28 Detector of trace of ion

Publications (1)

Publication Number Publication Date
JPS5791449A true JPS5791449A (en) 1982-06-07

Family

ID=15882534

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55169225A Pending JPS5791449A (en) 1980-11-28 1980-11-28 Detector of trace of ion

Country Status (1)

Country Link
JP (1) JPS5791449A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4587847A (en) * 1981-10-07 1986-05-13 Boliden Aktiebolag Method for indicating concealed deposits
EP0845671A1 (en) * 1994-06-17 1998-06-03 Varian Associates, Inc. Electron capture detector with guard electrode

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5185787A (en) * 1974-12-27 1976-07-27 Yokogawa Electric Works Ltd
JPS5292791A (en) * 1976-01-30 1977-08-04 Matsushita Electric Works Ltd Smoke detector of ionization type
JPS5563751A (en) * 1978-11-09 1980-05-14 Toyota Motor Corp Oxygen sensor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5185787A (en) * 1974-12-27 1976-07-27 Yokogawa Electric Works Ltd
JPS5292791A (en) * 1976-01-30 1977-08-04 Matsushita Electric Works Ltd Smoke detector of ionization type
JPS5563751A (en) * 1978-11-09 1980-05-14 Toyota Motor Corp Oxygen sensor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4587847A (en) * 1981-10-07 1986-05-13 Boliden Aktiebolag Method for indicating concealed deposits
EP0845671A1 (en) * 1994-06-17 1998-06-03 Varian Associates, Inc. Electron capture detector with guard electrode

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