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櫻井 洋亮*; 佐藤 博隆*; 足立 望*; 諸岡 聡; 戸高 義一*; 加美山 隆*
Applied Sciences (Internet), 11(11), p.5219_1 - 5219_17, 2021/06
被引用回数：4 パーセンタイル：30.36(Chemistry, Multidisciplinary)As a new method for evaluating single crystal and oligocrystal, pulsed neutron Bragg-dip transmission analysis/imaging method is being developed. In this study, a single Bragg-dip profile fitting analysis method was newly developed, and applied for analyzing detailed inner information in a crystalline grain position-dependently. In the method, the spectrum profile of a single Bragg-dip is analyzed at each position over a grain. As a result, it is expected that changes of crystal orientation, mosaic spread angle and thickness of a perfect crystal can be evaluated from the wavelength, the width and the integrated intensity of the Bragg-dip, respectively. For confirming this effectiveness, the method was applied to experimental data of position-dependent Bragg-dip transmission spectra of a Si-steel plate consisting of oligocrystals. As a result, inner information of multiple crystalline grains could be visualized and evaluated. The small change of crystal orientation in a grain, about 0.4
, could be observed by imaging the Bragg-dip wavelengths. By imaging the Bragg-dip widths, both another grain and mosaic block in a grain were detected. Furthermore, imaging results of the integrated intensities of Bragg-dips were consistent with the results of Bragg-dip width imaging. These small crystallographic changes have not been observed and visualized by previous Bragg-dip analysis methods.
岸本 泰明
プラズマ・核融合学会誌, 78(9), p.857 - 860, 2002/09
核融合プラズマや天体プラズマを中心に、プラズマが本質的役割を果たすさまざまな現象の中で、「非局所性」とそれに伴う「構造形成」をキーワードとして、それらの現象の背後にある普遍的物理を見いだすことを目的に、(1)レーザー爆縮プラズマ,(2)宇宙プラズマ,(3)磁場プラズマの分野における研究の現状を小特集として紹介している。
-ray irradiated polyethylenes as revealed by fourier transformation of line profiles土井 健治; 森 正武*
Japanese Journal of Applied Physics, 3(2), p.112 - 116, 1964/00
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