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JPS5713379A - Ionization chamber - Google Patents

Ionization chamber

Info

Publication number
JPS5713379A
JPS5713379A JP8782880A JP8782880A JPS5713379A JP S5713379 A JPS5713379 A JP S5713379A JP 8782880 A JP8782880 A JP 8782880A JP 8782880 A JP8782880 A JP 8782880A JP S5713379 A JPS5713379 A JP S5713379A
Authority
JP
Japan
Prior art keywords
collector pole
intermediate electrode
outer case
radioactive
radioactive material
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.)
Granted
Application number
JP8782880A
Other languages
Japanese (ja)
Other versions
JPS5945951B2 (en
Inventor
Teruo Ikeda
Tadahiro Minowa
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.)
Hitachi Ltd
Original Assignee
Aloka Co Ltd
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 Aloka Co Ltd filed Critical Aloka Co Ltd
Priority to JP8782880A priority Critical patent/JPS5945951B2/en
Publication of JPS5713379A publication Critical patent/JPS5713379A/en
Publication of JPS5945951B2 publication Critical patent/JPS5945951B2/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

Landscapes

  • Measurement Of Radiation (AREA)
  • Electron Tubes For Measurement (AREA)

Abstract

PURPOSE:To prevent the occurrence of a measurement error due to the contamination of a collector pole with a radioactive gaseous substance being ventilated, by a method wherein an intermediate electrode is placed between an inner wall of an outer case and the collector pole. CONSTITUTION:An intermediate electrode 20 is placed between an inner wall of an outer case and a collector pole 12 in the outer case 10. A distance between the intermediate electrode 20 and the outer case 10 is set so as to exceed a maximum range in the air of a radioactive material. The intermediate electrode is formed in a spiral, and a terminal 20a is connected to a high-voltage power source 16. An ionization current measuring device 18 is coupled to a terminal 12a of the collector pole 12. A heating power source 28 heats the collector pole and the intermediate electrode 20. A radioactive gaseous substance is fed into the outer case 10 from an inlet port 10a and is exhausted through an outlet port 11b. A current is applied to the radioactive material at the inside of the intermediate electrode 20, and an ionization current flows from the collector pole 12 to the ionization current measuring device 18. This prevents the contamination of the collector pole by the radioactive material and the occurrence of a measurement error.
JP8782880A 1980-06-30 1980-06-30 ionization chamber Expired JPS5945951B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8782880A JPS5945951B2 (en) 1980-06-30 1980-06-30 ionization chamber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8782880A JPS5945951B2 (en) 1980-06-30 1980-06-30 ionization chamber

Publications (2)

Publication Number Publication Date
JPS5713379A true JPS5713379A (en) 1982-01-23
JPS5945951B2 JPS5945951B2 (en) 1984-11-09

Family

ID=13925803

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8782880A Expired JPS5945951B2 (en) 1980-06-30 1980-06-30 ionization chamber

Country Status (1)

Country Link
JP (1) JPS5945951B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014055817A (en) * 2012-09-12 2014-03-27 Nippon Dempa Kogyo Co Ltd Geiger-muller counter and radiation detector

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6168324U (en) * 1984-10-12 1986-05-10
JPS6466716A (en) * 1987-09-08 1989-03-13 Seiko Instr & Electronics Stabilized light source
JPH01102980A (en) * 1987-10-16 1989-04-20 Fuji Photo Film Co Ltd Semiconductor laser controller

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014055817A (en) * 2012-09-12 2014-03-27 Nippon Dempa Kogyo Co Ltd Geiger-muller counter and radiation detector

Also Published As

Publication number Publication date
JPS5945951B2 (en) 1984-11-09

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