Development of Conventional Quadrupole Mass Analyzer for RI Target Analysis and Its Performance
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概要
- 論文の詳細を見る
A Knudsen-cell-based quadrupole mass analyzer has been developed for the analysis of a small amount of RI sample. To achieve a high signal/noise ratio, a continuous dynode electron multiplier was installed at the end of the mass filter and was operated in a pulse counting mode. Furthermore, the cylindrical shape molecular trap was set around the mass analyzer to reach high degree of vacuum and to reduce the RI contamination area in the apparatus.<BR>The isotope ratio of <SUP>135</SUP>Cs/<SUP>137</SUP>Cs samples has been measured to demonstrate the performance of the mass analyzer. Taking the advantage of the Knudsen-cells precise controllability over temperature, the contribution of the isobar <SUP>137</SUP>Ba was successfully removed in the mass spectrum of cesium. With samples containing about 0.3μg <SUP>137</SUP>Cs and almost the same amount of <SUP>135</SUP>Cs, the isotope ratio measurement with the total error of 3% has been achieved. The molecular trap was also shown to be effective to reduce the contamination area in the apparatus.
- 社団法人 日本原子力学会の論文
- 1997-05-25
著者
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Katoh Toshio
Nagoya University
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Nakamura Shoji
Nuclear Sci. And Engineering Directorate Japan Atomic Energy Agency
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HARADA Hideo
Power Reactor and Nuclear Fuel Development Corp.
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Katabuchi Tatsuya
Research Laboratory For Nuclear Reactors Tokyo Institute Of Technology
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NAKAMURA Shoji
Power Reactor and Nuclear Fuel Development Corporation
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KATOH Toshio
Power Reactor and Nuclear Fuel Development Corporation
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