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中性子透過率スペクトル測定を利用した新しい中性子散乱実験

Novel neutron scattering techniques using neutron transmission spectra

大場 洋次郎*; 諸岡 聡; 佐藤 博隆*; 佐藤 信浩*; 井上 倫太郎*; 杉山 正明*

Oba, Yojiro*; Morooka, Satoshi; Sato, Hirotaka*; Sato, Nobuhiro*; Inoue, Rintaro*; Sugiyama, Masaaki*

Based on the time-of-light (TOF) technique, new generation pulsed neutron sources enable novel neutron scattering experiments. Using small-angle neutron scattering (SANS) at the pulsed neutron sources, simultaneous measurements of SANS and Bragg edge transmission can be performed. From the SANS profiles, the precipitates and inclusions in metals and alloys are characterized, while the Bragg edge transmission spectra give crystallographic information about the matrix. This is a powerful tool for quantitative characterization of the microstructures in the metals and alloys. The neutron transmission experiments have potential for further development. Magnetic Bragg edge transmission analysis will be useful for magnetic materials. These new neutron scattering techniques enhance the usability and flexibility of neutron scattering experiments.

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