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Radiation Safety Management
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Radiation Safety Management Vol. 16(2017)

Paper

Modified Integral Counting Method with Various Quenched Samples for Different Scintillators

Masato NAKAYAMA, Masanori HARA, Masao MATSUYAMA, Kiyokazu HIROKAMI

Released: February 15, 2017

p.1-7

A modified integral counting method (MICM) with various quenched samples (MICM-VQ) has been investigated for its applicability for different scintillators using β emitters, ¹⁴C and ³⁵S. To assess the influence of scintillators, three sets of ¹⁴C quenched standards and two ³⁵S cocktail series were prepared. Two sets of ¹⁴C quenched standards were used for the toluene-compatible scintillator, the other for the Ultima Gold^TM scintillator. Sulfur-35 cocktail series were prepared with either Ecoscint^TM XR or Ultima Gold^TM AB. The radioactivity of these samples was determined using the MICM-VQ, with the results conforming to assayed values. Hence the MICM-VQ can assay the radioactivity of sample cocktails with various scintillators and requires no standard sample.

Scientific or Technical Note

Observation of Radioactive Cesium in Seabed Soil at the Soya Strait Derived from the Fukushima Daiichi Nuclear Power Plant

Yasushi NABAE, Sunao MIYASHITA, Satoru NAKASHIMA

Released: February 15, 2017

p.8-12

The seabed soil was collected at the Soya Strait of Hokkaido in September 2015, and ¹³⁴Cs derived from Fukushima Daiichi Nuclear Power Plant accident was detected at the seabed soil. It was suggested that this ¹³⁴Cs migrated from the Japan Sea to the Okhotsk Sea by the Tsushima Warm Current and the Soya Warm Current.

English Translation

Measurement of Spatial Dose Distribution of High Radiation Field by Radiophotoluminescence Photography

Tomonori OKUMURA, Tatsuro MAEKAWA, Naoki ZUSHI, Fuminobu SATO, Kikuo SHIMIZU, Yushi KATO, Isao MURATA, Takayoshi YAMAMOTO, Toshiyuki IIDA

Released: July 11, 2017

p.13-19

Radiophotoluminescence (RPL) photography has been proposed for the measurement of the spatial dose distribution of high radiation fields. A pulsed UV-LED illuminator was prepared as an excitation light source for the RPL photography. The fluorescence image of RPL material was observed by a gated intensified CCD camera. In a preliminary experiment, several tens of spherical RPL detectors were placed near an intense ⁶⁰Co source. The pulsed UV-LED illuminator and the gated intensified camera were pulse-operated to obtain the RPL photograph of the ball-shaped RPL detectors. The spatial dose distribution was calculated from the brightness of obtained RPL images.

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Volume And Issue List
Radiation Safety Management

Radiation Safety Management Vol. 16(2017)

Paper

Modified Integral Counting Method with Various Quenched Samples for Different Scintillators

Scientific or Technical Note

Observation of Radioactive Cesium in Seabed Soil at the Soya Strait Derived from the Fukushima Daiichi Nuclear Power Plant

English Translation

Measurement of Spatial Dose Distribution of High Radiation Field by Radiophotoluminescence Photography

System Maintenance

Announcement From J-STAGE

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Volume And Issue List Radiation Safety Management

Radiation Safety Management Vol. 16(2017)

Paper

Modified Integral Counting Method with Various Quenched Samples for Different Scintillators

Scientific or Technical Note

Observation of Radioactive Cesium in Seabed Soil at the Soya Strait Derived from the Fukushima Daiichi Nuclear Power Plant

English Translation

Measurement of Spatial Dose Distribution of High Radiation Field by Radiophotoluminescence Photography

System Maintenance

Announcement From J-STAGE

Journal Tools

Share this Title

Volume And Issue List
Radiation Safety Management