Plane multiwire-electrode ionization chamber for measurements of radon concentration in air

Akira Katase, Yuzuru Matsumoto, Yasunori Nagao, Takeji Sakae, Kenichi Tanabe, Kenji Ishibashi

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

A continuous measuring system has been developed, which uses a plane multiwire-electrode ionization chamber and obtains radon concentrations by measuring in situ alpha energy spectra due to alpha-active nuclei in the air. The chamber has three rigid plane multiwire electrodes in a box of aluminum plates which have holes for the air to flow freely through them. The concentration measurements do not disturb the distribution of radon in the air. Values of concentration are obtained with good statistical errors because of the use of a large volume for the ionization chamber. The slow rise-time pulses of alpha particles from the chamber are analyzed with a specially designed analog-to-digital converter which is controlled with a microcomputer. The energy spectra have been obtained with a FWHM of about 600 keV. Time variations of radon concentrations have been measured in a room in a ferroconcrete building.

Original languageEnglish
Pages (from-to)945-951
Number of pages7
JournalReview of Scientific Instruments
Volume57
Issue number5
DOIs
Publication statusPublished - Dec 1 1986

Fingerprint

Ionization chambers
Radon
ionization chambers
radon
Electrodes
electrodes
air
Air
energy spectra
Alpha particles
chambers
Digital to analog conversion
Full width at half maximum
Microcomputers
microcomputers
analog to digital converters
alpha particles
rooms
Aluminum
boxes

All Science Journal Classification (ASJC) codes

  • Instrumentation

Cite this

Katase, A., Matsumoto, Y., Nagao, Y., Sakae, T., Tanabe, K., & Ishibashi, K. (1986). Plane multiwire-electrode ionization chamber for measurements of radon concentration in air. Review of Scientific Instruments, 57(5), 945-951. https://doi.org/10.1063/1.1138840

Plane multiwire-electrode ionization chamber for measurements of radon concentration in air. / Katase, Akira; Matsumoto, Yuzuru; Nagao, Yasunori; Sakae, Takeji; Tanabe, Kenichi; Ishibashi, Kenji.

In: Review of Scientific Instruments, Vol. 57, No. 5, 01.12.1986, p. 945-951.

Research output: Contribution to journalArticle

Katase, A, Matsumoto, Y, Nagao, Y, Sakae, T, Tanabe, K & Ishibashi, K 1986, 'Plane multiwire-electrode ionization chamber for measurements of radon concentration in air', Review of Scientific Instruments, vol. 57, no. 5, pp. 945-951. https://doi.org/10.1063/1.1138840
Katase, Akira ; Matsumoto, Yuzuru ; Nagao, Yasunori ; Sakae, Takeji ; Tanabe, Kenichi ; Ishibashi, Kenji. / Plane multiwire-electrode ionization chamber for measurements of radon concentration in air. In: Review of Scientific Instruments. 1986 ; Vol. 57, No. 5. pp. 945-951.
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