The X-Ray Study of the Molecular Motion in Polyethylene Crystal. I
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概要
- 論文の詳細を見る
The temperature dependence of the integrated intensity of three Bragg reflections (020), (230) and (211) for polyethylene crystal has been measured in the temperature range from -90℃ to 110℃. The temperature factor increases with increasing temperature. The anisotropy of the temperature factor has been obtained from the temperature dependence of the integrated intensity of three Bragg reflections. Below 0℃, the temperature factor is a linear function of temperature and the three components of the thermal average of the mean squared displacement agree with the theoretical values calculated by Kitagawa and Miyazawa using the harmonic approximation. Above 0℃, however, the temperature factor increases with more steep slope and the harmonic approximation is not satisfied. In this temparature range, the anharmonic lattice vibration may cause the increase of the temperature factor.
- 社団法人日本物理学会の論文
- 1969-12-05
著者
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AOKI Yuji
Department of Physics, Tokyo Metropolitan University
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Aoki Yuji
Department Of Polymer Science Faculty Of Science Hokkaido University
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Aoki Yuji
Department Of Chemistry Faculty Of Science Gakushuin University
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CHIBA Akio
Department of Polymer Science, Faculty of Science, Hokkaido University
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KANEKO Motozo
Department of Polymer Science, Faculty of Science, Hokkaido University
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Chiba Akio
Department Of Applied Physics School Of Science And Engineering Waseda University
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Kaneko Motozo
Department Of High Polymer Science Faculty Of Science Hokkaido University
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