A twin-type airflow pulse ionization chamber for continuous alpha-radioactivity monitoring in atmosphere

Wataru Kada; Nidal Dwaikat; Jun Datemichi; Fuminobu Sato; Isao Murata; Yushi Kato; Toshiyuki Iida

doi:10.1016/j.radmeas.2010.07.032

A twin-type airflow pulse ionization chamber for continuous alpha-radioactivity monitoring in atmosphere

Wataru Kada^*, Nidal Dwaikat, Jun Datemichi, Fuminobu Sato, Isao Murata, Yushi Kato, Toshiyuki Iida

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

A simple and inexpensive twin-type airflow pulse ionization chamber was developed for the continuous monitoring of alpha-radioactivity in atmosphere under high humidity condition. The symmetrical structure of the twin-type ionization chamber was effective in the improvement of the ratio of signal to noise in the measurement of pulses induced by alpha-rays. Outdoor alpha-ray measurement was well performed with this ionization chamber by applying sufficiently high bias voltage to the electrodes, except for at very high humidity conditions. It was confirmed that the declination of the counting efficiency due to wetting was easily recovered by the dry-up of the inside of the chamber. Alpha-radioactivity from radon and other alpha-emitting radionuclide in atmosphere was satisfactorily monitored by the detector.

Original language	English
Pages (from-to)	1044-1048
Number of pages	5
Journal	Radiation Measurements
Volume	45
Issue number	9
DOIs	https://doi.org/10.1016/j.radmeas.2010.07.032
State	Published - Oct 2010
Externally published	Yes

Keywords

Airflow pulse ionization chamber
Alpha-radioactivity
Humidity effect
Outdoor monitoring
Twin-type ionization chamber

ASJC Scopus subject areas

Radiation
Instrumentation

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10.1016/j.radmeas.2010.07.032

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@article{4d11deb09e3f410e9690a9163157c857,

title = "A twin-type airflow pulse ionization chamber for continuous alpha-radioactivity monitoring in atmosphere",

abstract = "A simple and inexpensive twin-type airflow pulse ionization chamber was developed for the continuous monitoring of alpha-radioactivity in atmosphere under high humidity condition. The symmetrical structure of the twin-type ionization chamber was effective in the improvement of the ratio of signal to noise in the measurement of pulses induced by alpha-rays. Outdoor alpha-ray measurement was well performed with this ionization chamber by applying sufficiently high bias voltage to the electrodes, except for at very high humidity conditions. It was confirmed that the declination of the counting efficiency due to wetting was easily recovered by the dry-up of the inside of the chamber. Alpha-radioactivity from radon and other alpha-emitting radionuclide in atmosphere was satisfactorily monitored by the detector.",

keywords = "Airflow pulse ionization chamber, Alpha-radioactivity, Humidity effect, Outdoor monitoring, Twin-type ionization chamber",

author = "Wataru Kada and Nidal Dwaikat and Jun Datemichi and Fuminobu Sato and Isao Murata and Yushi Kato and Toshiyuki Iida",

year = "2010",

month = oct,

doi = "10.1016/j.radmeas.2010.07.032",

language = "English",

volume = "45",

pages = "1044--1048",

journal = "Radiation Measurements",

issn = "1350-4487",

publisher = "Elsevier Ltd.",

number = "9",

}

TY - JOUR

T1 - A twin-type airflow pulse ionization chamber for continuous alpha-radioactivity monitoring in atmosphere

AU - Kada, Wataru

AU - Dwaikat, Nidal

AU - Datemichi, Jun

AU - Sato, Fuminobu

AU - Murata, Isao

AU - Kato, Yushi

AU - Iida, Toshiyuki

PY - 2010/10

Y1 - 2010/10

N2 - A simple and inexpensive twin-type airflow pulse ionization chamber was developed for the continuous monitoring of alpha-radioactivity in atmosphere under high humidity condition. The symmetrical structure of the twin-type ionization chamber was effective in the improvement of the ratio of signal to noise in the measurement of pulses induced by alpha-rays. Outdoor alpha-ray measurement was well performed with this ionization chamber by applying sufficiently high bias voltage to the electrodes, except for at very high humidity conditions. It was confirmed that the declination of the counting efficiency due to wetting was easily recovered by the dry-up of the inside of the chamber. Alpha-radioactivity from radon and other alpha-emitting radionuclide in atmosphere was satisfactorily monitored by the detector.

AB - A simple and inexpensive twin-type airflow pulse ionization chamber was developed for the continuous monitoring of alpha-radioactivity in atmosphere under high humidity condition. The symmetrical structure of the twin-type ionization chamber was effective in the improvement of the ratio of signal to noise in the measurement of pulses induced by alpha-rays. Outdoor alpha-ray measurement was well performed with this ionization chamber by applying sufficiently high bias voltage to the electrodes, except for at very high humidity conditions. It was confirmed that the declination of the counting efficiency due to wetting was easily recovered by the dry-up of the inside of the chamber. Alpha-radioactivity from radon and other alpha-emitting radionuclide in atmosphere was satisfactorily monitored by the detector.

KW - Airflow pulse ionization chamber

KW - Alpha-radioactivity

KW - Humidity effect

KW - Outdoor monitoring

KW - Twin-type ionization chamber

UR - https://www.scopus.com/pages/publications/77957231615

U2 - 10.1016/j.radmeas.2010.07.032

DO - 10.1016/j.radmeas.2010.07.032

M3 - Article

AN - SCOPUS:77957231615

SN - 1350-4487

VL - 45

SP - 1044

EP - 1048

JO - Radiation Measurements

JF - Radiation Measurements

IS - 9

ER -

A twin-type airflow pulse ionization chamber for continuous alpha-radioactivity monitoring in atmosphere

Abstract

Keywords

ASJC Scopus subject areas

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