Journal Article10.1007/BF02039652
Radioactivity distribution measurement of various natural material surfaces with Imaging Plate
Chizuo Mori,Tomohiro Suzuki,S. Koido,Akira Uritani,Hiroshi Miyahara,Katsuo Yanagida,Y. Wu,Kunihide Nishizawa,Makoto Yoshida,F. Takahashi,Junji Miyahara +10 more
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TL;DR: In this article, the authors used imaging plate to obtain distribution images of natural radioactivity in natural materials such as vegetables, sea food, meat etc., and compared the radioactivity around 0.06∼0.4 Bq/g depending on the part of specimens.
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Abstract: Distribution images of natural radioactivity in natural materials such as vegetables were obtained by using Imaging Plate. In such cases, it is necessary to reduce background radiation intensity by one order or more. Graded shielding is very important. Especially, the innermost surface of a shielding box should be covered with acrylic resin plate. We obtained natural radioactivity distribution images of vegetables, sea food, meat etc. Mostly β-rays emitted from40K print the radioactivity distribution image. Comparison between γ-ray intensity of KCl solution measured with HPGe detector and that of natural material specimen gave the radioactivity around 0.06∼0.4 Bq/g depending on the kind and the part of specimens.
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Citations
Characteristics and Correction of the Fading of Imaging Plate
Tomohiro Suzuki,Chizuo Mori,Katsuo Yanagida,Akira Uritani,Hiroshi Miyahara,Makoto Yoshida,Fumiaki Takahashi +6 more
TL;DR: In this paper, photo-stimulated luminescence (PSL) is emitted and read through a photomultiplier, and the intensity fades with increasing the elapsed time between the exposure and the PSL reading.
Spectral measurements of imaging plate backgrounds, alpha-particles and beta-particles
TL;DR: The spectral characterization of the background, alpha-particles and beta-particle is expected to support applications in cosmic ray, heavy ion, radionuclide and electron studies.
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In-vivo thyroid 125I monitoring method using imaging plate.
TL;DR: A new in vivo thyroid monitoring system was devised with radioluminography using an imaging plate and the characteristic 125I thyroid image made it possible to visually confirm that the thyroid definitely accumulated 125I.
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Tritium analysis in building dismantling process using digital autoradiography
Pascal Fichet,Fannie Bresson,Anumaija Leskinen,Florence Goutelard,Jussi Ikonen,Marja Siitari-Kauppi +5 more
TL;DR: In this article, the authors developed a sensitive analytical technique to investigate tritium traces on concrete floor, ceiling and walls of a laboratory under dismantling process in dismantling process, the behaviour of trium must be followed very closely and in particular releases to atmosphere and exposure to public must be prevented.
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Automatic activity measurement and data processing system using image analyzer
TL;DR: An automated counting and data processing system for determining the radioactivity of 32 P was devised by using an image analyzer, an imaging plate, and a personal computer.
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A new type of x-ray area detector utilizing laser stimulated luminescence
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Detection of extremely low level radioactivity with imaging plate
Chizuo Mori,Ayumi Matsumura,Tomohiro Suzuki,Hiroshi Miyahara,Takahiko Aoyama,Kunihide Nishizawa +5 more
TL;DR: In this article, a method to determine radionuclide species by only a single exposure is proposed; the several sheets lamination method and the several times successive read-out method.
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Radioactivity and geometrical distribution measurements of α-emitter specimens with the imaging plate
Chizuo Mori,A. Matsumura +1 more
TL;DR: In this paper, the sensitivity of the imaging plate to α-rays was investigated and the signal output was found to be linear up to at least thi thirty incident α rays per pixel.
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Measurement of the radioactivity distribution of material surfaces with an imaging plate
Chizuo Mori,Tomohiro Suzuki,Shingo Koido,Hiroshi Miyahara,Akira Uritani,Takahiko Aoyama,Kunihide Nishizawa +6 more
TL;DR: In this article, a method to determine the radioactivity of material surfaces such as stones, vegetables, and vegetables is proposed, using an imaging plate with a very high sensitivity, and it is useful for in situ measurements of the distribution of extremely low levels of radioactivity, down to about 10 −3 Bq/mm 2.
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