GB1137039A - Through-flow ionisation chamber - Google Patents

Through-flow ionisation chamber

Info

Publication number
GB1137039A
GB1137039A GB13780/67A GB1378067A GB1137039A GB 1137039 A GB1137039 A GB 1137039A GB 13780/67 A GB13780/67 A GB 13780/67A GB 1378067 A GB1378067 A GB 1378067A GB 1137039 A GB1137039 A GB 1137039A
Authority
GB
United Kingdom
Prior art keywords
electrode
envelope
flange
gas
chamber
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
GB13780/67A
Inventor
Henri Baron
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.)
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
Original Assignee
Commissariat a lEnergie Atomique CEA
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 Commissariat a lEnergie Atomique CEA filed Critical Commissariat a lEnergie Atomique CEA
Publication of GB1137039A publication Critical patent/GB1137039A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J47/00—Tubes for determining the presence, intensity, density or energy of radiation or particles
    • H01J47/02—Ionisation chambers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/0004—Gaseous mixtures, e.g. polluted air
    • G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
    • G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
    • G08B17/11—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using an ionisation chamber for detecting smoke or gas
    • G08B17/113—Constructional details

Landscapes

  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Combustion & Propulsion (AREA)
  • Medicinal Chemistry (AREA)
  • Food Science & Technology (AREA)
  • General Health & Medical Sciences (AREA)
  • Biochemistry (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Measurement Of Radiation (AREA)

Abstract

1,137,039. Ionization chambers. COMMISSARIAT A L'ENERGIE ATOMIQUE. 23 March, 1967 [28 March, 1966], No. 13780/67. Heading H1D. A through-flow ionization chamber for measuring the ion content of a gas has a high tension electrode 22 and a measuring electrode 12 at a potential substantially equal to that of the envelope 6 which is earthed, the measuring electrode 12 having orifices 28 to admit gas to the useful volume of the chamber, which orifices are sufficiently small to substantially confine the electric field to said useful volume with the object of lowering and stabilizing the parasitic collection rate. The electrodes 12 and 22 are supported from a flange 8 of the envelope 6 by insulators 10 and 20. Insulating ring 10 is electrostatically shielded by a flange 29 of electrode 12 and an extension 30 of flange 8. In an arrangement (Fig. 2, not shown), for monitoring the radioactive gas content of an atmosphere, the envelope 6 communicates at one end with a chamber containing a dust filter (32) and a deionization filter, and at the other end with a chamber containing a fan (34) and an amplifier (35). Alternative embodiments (Figs. 3 to 5, not shown) comprise a cylindrical arrangement in which the high tension electrode surrounds the measuring electrode which surrounds a gas inlet tube, and an arrangement with flat plate electrodes.
GB13780/67A 1966-03-28 1967-03-23 Through-flow ionisation chamber Expired GB1137039A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR55291A FR1480257A (en) 1966-03-28 1966-03-28 Circulating ionization chamber

Publications (1)

Publication Number Publication Date
GB1137039A true GB1137039A (en) 1968-12-18

Family

ID=8604869

Family Applications (1)

Application Number Title Priority Date Filing Date
GB13780/67A Expired GB1137039A (en) 1966-03-28 1967-03-23 Through-flow ionisation chamber

Country Status (7)

Country Link
BE (1) BE695036A (en)
CH (1) CH478454A (en)
DE (1) DE1589583B1 (en)
ES (1) ES338578A1 (en)
FR (1) FR1480257A (en)
GB (1) GB1137039A (en)
LU (1) LU53262A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2202369A (en) * 1987-02-06 1988-09-21 Kernforschungsz Karlsruhe Radioactive-gas detection apparatus comprising an ionization chamber
US7823438B2 (en) 2005-01-24 2010-11-02 Calectro Ab Fluid detector

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4441024A (en) * 1981-11-16 1984-04-03 The United States Of America As Represented By The United States Department Of Energy Wide range radioactive gas concentration detector

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL224264A (en) * 1957-10-24
US3084255A (en) * 1958-11-13 1963-04-02 Lab For Electronics Inc Radiation sensitive system
DE1123409B (en) * 1959-06-23 1962-02-08 Inst Staubforschung Und Radioa Ionization chamber for the detection of beta rays
FR1332343A (en) * 1962-08-16 1963-07-12 Thomson Houston Comp Francaise Ionization chamber

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2202369A (en) * 1987-02-06 1988-09-21 Kernforschungsz Karlsruhe Radioactive-gas detection apparatus comprising an ionization chamber
US7823438B2 (en) 2005-01-24 2010-11-02 Calectro Ab Fluid detector

Also Published As

Publication number Publication date
DE1589583B1 (en) 1970-12-23
ES338578A1 (en) 1968-12-01
CH478454A (en) 1969-09-15
BE695036A (en) 1967-08-14
LU53262A1 (en) 1967-05-23
FR1480257A (en) 1967-05-12

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