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Journal Articles

Imaging of radiocesium dynamics in soybean by using a high-resolution gamma camera

Yin, Y.-G.; Kawachi, Naoki; Suzui, Nobuo; Ishii, Satomi; Yoshihara, Toshihiro*; Watabe, Hiroshi*; Yamamoto, Seiichi*; Fujimaki, Shu

JAEA-Review 2015-022, JAEA Takasaki Annual Report 2014, P. 112, 2016/02

Oral presentation

Evaluation of low cesium rice by using a gamma camera

Yin, Y.-G.; Suzui, Nobuo; Kawachi, Naoki; Ishii, Satomi; Hase, Yoshihiro; Fujimaki, Shu

no journal, , 

no abstracts in English

Oral presentation

Observation of the elements dynamics in plants using an autoradiography technique with a fluorescent plate

Kurita, Keisuke; Suzui, Nobuo*; Yin, Y.-G.*; Ishii, Satomi*; Iikura, Hiroshi; Kawachi, Naoki*; Sakai, Takuro

no journal, , 

no abstracts in English

Oral presentation

Development of projection autoradiography technique using magnetic fields

Kurita, Keisuke; Sakai, Takuro; Suzui, Nobuo*; Yin, Y.-G.*; Iikura, Hiroshi; Kawachi, Naoki*

no journal, , 

We have developed a novel technique named projection autoradiography. Charged particles in a magnetic field move spirally following the Larmor precession. By utilizing this phenomenon, it is possible to control the trajectory of beta particles emitted from the sample and project the RI distribution onto the IP. Specifically, a uniform magnetic field is applied between the sample and IP, then the beta particles move spirally toward the IP without the severe deterioration of the sensitivity and resolution. In order to prove the new technique, an autoradiography experiment was performed. This result proved that projection autoradiography technique is promising for various applications, such as direct taking a radiograph of cultured samples in a petri dish, etc.

Patent

放射性同位体の分析方法及び分析装置

瀬川 麻里子; 前田 亮; 藤 暢輔

not registered

JP, 2021-173289  Patent licensing information

【課題】放射性同位体の化学形毎の放射線量を、長期間に亘って正確に分析可能な放射性同位体の分析方法を提供する。 【解決手段】放射性同位体の分析方法は、放射性同位体を化学形毎に分離する分離ステップ(S11)と、可視化シンチレータを介した薄層プレート及び標準光を放出する標準光シンチレータを撮像する撮像ステップ(S12)と、スポット領域の輝度値及び標準光シンチレータの領域の抽出輝度値を抽出する抽出ステップ(S13)と、標準輝度値及び抽出輝度値に基づいて、スポット領域の輝度値を補正する補正ステップ(S14)と、放射性同位体の輝度値と放射線量との予め求められた対応関係に基づいて、補正ステップで補正したスポット領域の輝度値に対応する放射線量を特定する特定ステップ(S15)とを含む。

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