Correlation between Boson Peaks and First Sharp Diffraction Peaks in Permanently Densified SiO2 and GeO2 Glass.
نویسندگان
چکیده
منابع مشابه
Dispersion in GeO2-SiO2 glasses.
Germania glass was prepared from high purity GeO2 powder. Refractive-index dispersion was used to calculate material dispersion and to provide a model for representing the dispersion of GeO2-SiO2 glasses. The wavelength of zero material dispersion is found to be in agreement with theoretical calculations. Modal propagation is modeled for a GeO2 core-silica clad fiber. Results support compositio...
متن کاملElastic Moduli of Permanently Densified Silica Glasses
Modelling the mechanical response of silica glass is still challenging, due to the lack of knowledge concerning the elastic properties of intermediate states of densification. An extensive Brillouin Light Scattering study on permanently densified silica glasses after cold compression in diamond anvil cell has been carried out, in order to deduce the elastic properties of such glasses and to pro...
متن کاملStatistical significance of secondary peaks in the auto-correlation function
Wässle and colleagues first observed that the local structure of cell mosaics was approximately hexagonal1, as the histogram of the angular difference of all neighbors to a reference cell within some distance showed a mode at 60deg. Their analysis was based on the location of the cell bodies (not the receptive fields). However, the same conclusion holds true if one uses the actual centers of th...
متن کاملCausality and the Doppler peaks.
A considerable experimental effort is underway to detect the ‘Doppler peaks’ in the angular power spectrum of the cosmic microwave anisotropy. These peaks offer unique information about structure formation in the universe. One key issue is whether structure could have formed by the action of causal physics within the standard hot big bang, or whether a prior period of inflation was required. Re...
متن کاملCorrelation Between Probe Shape and Atomic Friction Peaks at Graphite Step Edges
Molecular dynamics simulation and atomic force microscopy are used to study the nature of friction between nanoscale tips and graphite step edges. Both techniques show that the width of the lateral force peak as the probe moves up a step is directly correlated with the size and shape of the tip. The origin of that relationship is explored and the similarities and differences between the measure...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: THE REVIEW OF HIGH PRESSURE SCIENCE AND TECHNOLOGY
سال: 1998
ISSN: 0917-639X,1348-1940
DOI: 10.4131/jshpreview.7.700