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Tomita, Ryohei; Tomita, Jumpei; Suzuki, Daisuke; Yasuda, Kenichiro; Miyamoto, Yutaka
Hosha Kagaku, (48), p.1 - 15, 2023/09
Secondary Ion Mass Spectrometry (SIMS) is the method to detect secondary ions produced by the sputtering of primary ions. SIMS is one of effective method to measure isotopic composition of particles containing nuclear material in environmental sample for safeguards. We are a group member of the International Atomic Energy Agency (IAEA)'s network of analytical laboratories and have developed analytical techniques using SIMS and other mass spectrometers for nuclear safeguards. We will introduce the principle of SIMS and analytical techniques developed by our group to measure isotopic composition of uranium particles which having a particle diameter of micron order in environmental sample for safeguards.
Usuda, Shigekazu
Kagaku To Kyoiku, 51(10), p.612 - 613, 2003/10
no abstracts in English
Iguchi, Tetsuo; Watanabe, Kenichi*; *; Nose, Shoichi; Harano, Hideki;
JNC TY9400 2000-019, 34 Pages, 2000/05
JNC-TY9400-2000-019.pdf:0.79MB
None
Miyamoto, Yutaka; Esaka, Fumitaka; Suzuki, Daisuke; Yasuda, Kenichiro; Magara, Masaaki
no journal, ,
We have been analyzing ultra-trace amounts of nuclear materials (uranium and plutonium) in the safeguards environmental samples to meet the analytical requests from the IAEA, and the analytical techniques for ultra-trace amounts of nuclear materials (uranium and plutonium) in the environmental samples have been developed in the clean-room facility, CLEAR, in order to contribute to the strengthened safeguards system and improve the analytical ability for the safeguards environmental samples. Our developed techniques to measure the precise amounts and isotopic ratios of femto-grams to nano-grams of nuclear materials are introduced, and the role of CLEAR in the IAEA network for the analysis of safeguards environmental samples is mentioned.
Tomita, Ryohei; Tomita, Jumpei; Suzuki, Daisuke; Yasuda, Kenichiro; Miyamoto, Yutaka
no journal, ,
In this study, we tried to solve the problem of electrostatic discharge on uranium particle based by porous silicon particle and to analyze uranium isotopic ratio of the uranium particle-based silicon by SIMS with high accuracy. Experimental results showed that primary beam of negative oxygen (O
) is effective to compensate charge of uranium particle-based silicon. The negative primary beam also enable us to analyze uranium isotopic ratio of the uranium particle-based silicon within 2
range of standard deviation.
Koyama, Shinichi
no journal, ,
This report focuses on the measurement of actinide and lanthanide isotope ratios in the analysis of irradiated fuel and fuel debris. We will introduce some research cases regarding the development of analytical methods and the evaluation of the results.
