Characteristic X-ray detector: In-situ imaging of radioactive contaminant distributions

Shingo Kobayashi; Takayuki Shinomiya; Toru Yoshida; Hisashi Kitamura; Yoshiyuki Shirakawa; Kazuyoshi Kurita; Yukio Uchihori

doi:10.1016/j.radmeas.2015.08.001

Characteristic X-ray detector: In-situ imaging of radioactive contaminant distributions

Shingo Kobayashi^*, Takayuki Shinomiya, Toru Yoshida, Hisashi Kitamura, Yoshiyuki Shirakawa, Kazuyoshi Kurita, Yukio Uchihori

^*Corresponding author for this work

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

8 Citations (Scopus)

Abstract

The characteristic X-ray detector (CXRD), a CsI(Tl) scintillator with a 50-mm diameter, is a directional X-ray sensor that measures characteristic X-rays from radioactive material, such as ¹³⁷Cs, and identifies the direction of radioactive contamination. We evaluated a CXRD and visualized the distribution of radioactivity in the contaminated area near the Fukushima Dai-ichi nuclear power station, where the ambient dose equivalent rate was 2.1 μSv/h at 1 m above ground level. We found a good correlation between the characteristic X-ray fluxes and the distribution of radioactive contaminants with a 0.823 Pearson product-moment correlation coefficient.

Original language	English
Pages (from-to)	26-30
Number of pages	5
Journal	Radiation Measurements
Volume	82
DOIs	https://doi.org/10.1016/j.radmeas.2015.08.001
Publication status	Published - 2015 Dec 1
Externally published	Yes

Keywords

Characteristic X-ray detector
Decontamination
Fukushima Dai-ichi nuclear power station
Gamma camera
Radiation safety

ASJC Scopus subject areas

Radiation
Instrumentation

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10.1016/j.radmeas.2015.08.001

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title = "Characteristic X-ray detector: In-situ imaging of radioactive contaminant distributions",

abstract = "The characteristic X-ray detector (CXRD), a CsI(Tl) scintillator with a 50-mm diameter, is a directional X-ray sensor that measures characteristic X-rays from radioactive material, such as 137Cs, and identifies the direction of radioactive contamination. We evaluated a CXRD and visualized the distribution of radioactivity in the contaminated area near the Fukushima Dai-ichi nuclear power station, where the ambient dose equivalent rate was 2.1 μSv/h at 1 m above ground level. We found a good correlation between the characteristic X-ray fluxes and the distribution of radioactive contaminants with a 0.823 Pearson product-moment correlation coefficient.",

keywords = "Characteristic X-ray detector, Decontamination, Fukushima Dai-ichi nuclear power station, Gamma camera, Radiation safety",

author = "Shingo Kobayashi and Takayuki Shinomiya and Toru Yoshida and Hisashi Kitamura and Yoshiyuki Shirakawa and Kazuyoshi Kurita and Yukio Uchihori",

year = "2015",

month = dec,

day = "1",

doi = "10.1016/j.radmeas.2015.08.001",

language = "English",

volume = "82",

pages = "26--30",

journal = "Radiation Measurements",

issn = "1350-4487",

publisher = "Elsevier Limited",

}

TY - JOUR

T1 - Characteristic X-ray detector

T2 - In-situ imaging of radioactive contaminant distributions

AU - Kobayashi, Shingo

AU - Shinomiya, Takayuki

AU - Yoshida, Toru

AU - Kitamura, Hisashi

AU - Shirakawa, Yoshiyuki

AU - Kurita, Kazuyoshi

AU - Uchihori, Yukio

PY - 2015/12/1

Y1 - 2015/12/1

N2 - The characteristic X-ray detector (CXRD), a CsI(Tl) scintillator with a 50-mm diameter, is a directional X-ray sensor that measures characteristic X-rays from radioactive material, such as 137Cs, and identifies the direction of radioactive contamination. We evaluated a CXRD and visualized the distribution of radioactivity in the contaminated area near the Fukushima Dai-ichi nuclear power station, where the ambient dose equivalent rate was 2.1 μSv/h at 1 m above ground level. We found a good correlation between the characteristic X-ray fluxes and the distribution of radioactive contaminants with a 0.823 Pearson product-moment correlation coefficient.

AB - The characteristic X-ray detector (CXRD), a CsI(Tl) scintillator with a 50-mm diameter, is a directional X-ray sensor that measures characteristic X-rays from radioactive material, such as 137Cs, and identifies the direction of radioactive contamination. We evaluated a CXRD and visualized the distribution of radioactivity in the contaminated area near the Fukushima Dai-ichi nuclear power station, where the ambient dose equivalent rate was 2.1 μSv/h at 1 m above ground level. We found a good correlation between the characteristic X-ray fluxes and the distribution of radioactive contaminants with a 0.823 Pearson product-moment correlation coefficient.

KW - Characteristic X-ray detector

KW - Decontamination

KW - Fukushima Dai-ichi nuclear power station

KW - Gamma camera

KW - Radiation safety

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SP - 26

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JO - Radiation Measurements

JF - Radiation Measurements

ER -

Characteristic X-ray detector: In-situ imaging of radioactive contaminant distributions

Abstract

Keywords

ASJC Scopus subject areas

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