Flight-Time Spread of Uniform Field Sector Magnet System for Use in Nuclear Life-Time Measurements
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概要
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A nuclear life-time measurement apparatus incorporating a deflecting β-ray spectrometer with electron pre-accelerator has been constructed. A new arrangement consisting of two double angular focusinag sector magnets based on the principle of symmetry has been devised so as to reduce the time spread in the spectrometer, which up till now has been the weak point of such systems. The time spread in the spectrometer was estimated to be ≅0.1 ns by a simulation method, and good agreement was obtained between this estimated value and the experimental value. A prompt time resolution of 1.25 ns (FWHM) was obtained. The half-lives of the 199 and 401 keV levels in ^<75>:As were measured with an acceleration voltage up to 30kV to check the reliability of the apparatus. The values were fournd to be 0.87±0.04 ns and 1.74±0.05 ns, respectively, in good agreement with previous measurements.
- 社団法人応用物理学会の論文
- 1984-10-20
著者
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Yamada Yoshihiro
Department Of Cell Differentiation The Sakaguchi Laboratory School Of Medicine Keio University
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Sakata Akihiko
Department Of Electrical Engineering Faculty Of Engineering Himeji Institute Of Technology
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OHIRA Kyozo
Department of Electrical Engineering, Himeji Institute of Technology
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Ohira Kyozo
Department Of Electrical Engineering Himeji Institute Of Technology
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Yamada Yoshihiro
Department of Electrical Engineering, Himeji Institute of Technology
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Mamei Masayuki
Department of Electrical Engineering, Himeji Institute of Technology
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Mamei Masayuki
Department of Electrical Engineering, Himeji Institute of Technology:(Present address)Matsushita Electronics Corp.
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