A new digital autoradiographical method for identification of Pu particles using an imaging plate

Koarashi, Jun; Saito, Fumihiro; Akiyama, K.; Rahman, Naureen Mahbub; Iida, Takao

doi:10.1016/j.apradiso.2006.07.016

Cited by 40 publications

(18 citation statements)

References 12 publications

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“…Currently, the quantitative measurement of alpha particles has become a promising extensional application of IP, especially in the field of environmental radiation studies (Iimoto et al, 2004;Koarashi et al, 2007). However, detection of alpha particles by IP was influenced by beta/gamma radiation due to its non-selective sensitivity to all species of radiation.…”

Section: Introductionmentioning

confidence: 99%

Identification and counting of alpha tracks by using an imaging plate

Chen¹,

Zhuo²,

Kong³

2011

Radiation Measurements

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Section: Introductionmentioning

confidence: 99%

Identification and counting of alpha tracks by using an imaging plate

Chen¹,

Zhuo²,

Kong³

2011

Radiation Measurements

View full text Add to dashboard Cite

“…3) Recently, the applications of IP have been extended to quantitative measurements of both natural and artificial radioactivity. [4][5][6][7][8] As the alpha signals in IP are potentially interfered by the background radiation and system noise, several previous studies have proposed and developed several methods to discriminate the signal of alpha radiation from that of other types of radiation by setting different thresholds of PSL. In those studies, the number of peaks (defined as ''alpha spots'' in this study) with the PSL values on it and its neighboring pixels larger than the threshold was counted instead of the gross PSL values to quantify alpha radiation.…”

Section: Introductionmentioning

confidence: 99%

“…In those studies, the number of peaks (defined as ''alpha spots'' in this study) with the PSL values on it and its neighboring pixels larger than the threshold was counted instead of the gross PSL values to quantify alpha radiation. [6][7][8] For example, the threshold of PSL was determined as 0.1 for BAS-SR2025 type of IP (Fuji Film Co., Ltd.) by Saito et al to measure the airborne radon decay products. 6) However, it is known that the sensitivity of IP depends on the type of IP, its imaging reader, and the parameters selected for image readout.…”

Section: Introductionmentioning

confidence: 99%

Fading Characteristics of Alpha Radiation Signals Stored in an Imaging Plate

Chen

Zhuo

Kong

2011

Journal of Nuclear Science and Technology

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For the quantitative measurement of alpha radiation using the technique of imaging plate (IP), the fading characteristics of both the gross photostimulated luminescence (PSL) values and the counts of alpha spots in the IP irradiated with an 241 Am source were experimentally studied at different temperatures and elapsed times. Based on the experimental data and the proposed theory, the functions of fading correction were established by fitting the data by the least-square method and testified. The results showed that the fading correction was important and the functions were practical for more accurate measurements of alpha radiation. Compared with the traditional PSL method, the spot counting method was preferable for a more accurate measurement of alpha radiation.

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“…Koarashi et al 10) applied an IP system with 50 mm pixel digitization to rapidly identify plutonium particles on air filter papers. They defined the ''square-PSL intensity'' using 5 Â 5 pixels (250 Â 250 mm 2 ) and separated the radioactivities of plutonium from those of radon progeny nuclides by measuring the square-PSL intensity.…”

Section: Introductionmentioning

confidence: 99%

“…Several IP methods [7][8][9][10] for plutonium radioactivity measurement have been studied. Mori and Matsumura 7) investigated the relationship between the PSL intensity and the number of incident -rays into a single pixel (100 Â 100 mm 2 ) of the IP.…”

Section: Introductionmentioning

confidence: 99%

An Autoradiographical Method Using an Imaging Plate for the Analyses of Plutonium Contamination in a Plutonium Handling Facility

Takasaki

Sagawa

Kurosawa

et al. 2011

Journal of Nuclear Science and Technology

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An autoradiographical method using an imaging plate (IP) was developed to analyze plutonium contamination in a plutonium handling facility. The IPs were exposed to ten specimens having a single plutonium particle. Photostimulated luminescence (PSL) images of the specimens were taken using a laser scanning machine. One relatively large spot induced by -radioactivity from plutonium was observed in each PSL image. The plutonium-induced spots were discriminated by a threshold derived from background and the size of the spot. A good relationship between the PSL intensities of the spots andradioactivities measured using a radiation counter was obtained by least-square fitting, taking the fading effect into consideration. This method was applied to workplace monitoring in an actual uraniumplutonium mixed oxide (MOX) fuel fabrication facility. Plutonium contaminations were analyzed in ten other specimens having more than two plutonium spots. The -radioactivities of plutonium contamination were derived from the PSL images and their relative errors were evaluated from exposure time.

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A new digital autoradiographical method for identification of Pu particles using an imaging plate

Cited by 40 publications

References 12 publications

Identification and counting of alpha tracks by using an imaging plate

Identification and counting of alpha tracks by using an imaging plate

Fading Characteristics of Alpha Radiation Signals Stored in an Imaging Plate

An Autoradiographical Method Using an Imaging Plate for the Analyses of Plutonium Contamination in a Plutonium Handling Facility

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