Neutron scattering analysis of low-frequency modes in silica

Wischnewski A.; Dianoux AJ.; Kamitakahara WA.; Zarestky JL.; Buchenau U.

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Neutron scattering analysis of low-frequency modes in silica

机译：二氧化硅中低频模式的中子散射分析

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We report coherent inelastic neutron scattering results in vitreous silica at temperatures up to 1673 K, 200 K above the glass transition. As in earlier low-temperature data, clear evidence is seen for non-sound-wave modes at the boson peak. Contrary to other glass formers, silica shows nearly no fast relaxations at the glass transition. The combination of the neutron spectra with recent X-ray Brillouin data allows the identification of the scattering mechanisms for high-frequency sound waves in the glass. Below 1 THz, one has resonant scattering from low-frequency vibrations and above 1 THz, Rayleigh scattering from the atomic disorder. [References: 30]

机译：我们报告相干的非弹性中子散射结果，在高达1673 K（比玻璃化转变温度高200 K）的温度下，玻璃状二氧化硅。与早期的低温数据一样，在玻色子峰处也可以看到明显的非声波模式证据。与其他玻璃形成剂相反，二氧化硅在玻璃化转变时几乎没有快速松弛。将中子光谱与最新的X射线布里渊数据相结合，可以确定玻璃中高频声波的散射机制。低于1 THz时，低频振动产生共振散射，高于1 THz时，原子混乱引起瑞利散射。 [参考：30]

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《Philosophical magazine, B. Physics of condensed matter, electronic, optical, and magnetic properties》 |1998年第2期|共11页
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Wischnewski A.; Dianoux AJ.; Kamitakahara WA.; Zarestky JL.; Buchenau U.;
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1. Neutron scattering analysis of low-frequency modes in silica [J] . Wischnewski A., Dianoux AJ., Kamitakahara WA., Philosophical magazine, B. Physics of condensed matter, electronic, optical, and magnetic properties . 1998,第2期

机译：二氧化硅中低频模式的中子散射分析
2. Inelastic neutron scattering and molecular dynamics studies on low-frequency modes of clathrate hydrates [J] . Itoh H., Chazallon B., Schober H., Canadian Journal of Physics . 2003,第1期

机译：包合物水合物低频模式的非弹性中子散射和分子动力学研究
3. Low-frequency amide modes in different hydrogen-bonded forms of nylon-6 studied by inelastic neutron scattering and density-functional calculations [J] . Papanek P., Fischer JE., Murthy NS. Macromolecules . 2002,第10期

机译：通过非弹性中子散射和密度泛函计算研究尼龙6不同氢键形式的低频酰胺模式
4. Tricalcium Silicate Hydration with CaCl2: Application of the Boundary Nucleation Model to Quasielastic Neutron Scattering Data [C] . Peterson VK, Thomas JJ, Whitten AE International Congress on the Chemistry of Cement . 2011

机译：具有CaCl2的硅酸钙水合：将边界成核模型应用于拟塑性中子散射数据
5. Neutron scattering studies of structure, hydrothermal stability and transport in porous silica catalyst supports [D] . Pollock, Rachel A. 2012

机译：多孔二氧化硅催化剂载体中结构，水热稳定性和传输的中子散射研究
6. Water-coupled low-frequency modes of myoglobin and lysozyme observed by inelastic neutron scattering. [O] . M Diehl, W Doster, W Petry, 1997

机译：非弹性中子散射观察到的肌红蛋白和溶菌酶的水耦合低频模式。
7. Water-coupled low-frequency modes of myoglobin and lysozyme observed by inelastic neutron scattering. [O] . Diehl, M, Doster, W, Petry, W, 1997

机译：非弹性中子散射观察到的肌红蛋白和溶菌酶的水耦合低频模式。
8. SIGMA CENTER NEUTRON CROSS SECTION EVALUATION GROUP Optical Model Analysis of Elastic and Inelastic Scattering of Neutrons by Aluminum in the MeV Region [R] . S. O. Moore 1965

机译：sIGma CENTER NEUTRON横截面评估组meV区域铝中子弹性和非弹性散射的光学模型分析

Neutron scattering analysis of low-frequency modes in silica

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