Stability Performance Assessment of Pipelines under Hydrostatic Pressure

Structure and stability of ZrSiO 4 under hydrostatic pressure

Conformation of p-terphenyl under hydrostatic pressure.

The conformation of p-terphenyl (C18H14) and deuterated p-terphenyl (C18D14) has been investigated, using high-pressure infrared spectroscopy at liquid-helium temperatures. First-principles calculations, together with the experimental results, were performed to determine the structure of p-terphenyl in the twisted conformation. At low temperatures and pressures, p-terphenyl belongs to the C2 po...

Infrared spectroscopy of biphenyl under hydrostatic pressure

Changes in the conformations of conjugated molecules affect the optical and electronic properties significantly. Hydrostatic pressure has been used to probe the conformations of biphenyl (C12H10) and deuterated biphenyl (C12D10) at liquid-helium temperatures. Infrared ~IR! spectra of these materials have been taken up to a pressure of 2 GPa. A disappearance of certain IR absorption peaks has be...

Photoluminescence from ZnS1ÀxTex alloys under hydrostatic pressure

ZnS12xTex (0.022) isoelectronic centers. The pressure coefficients of the emission bands ar...

Pressure Study on Mn Doped KDP System under Hydrostatic Pressure

High Pressure Raman scattering measurements of KDP:Mn were performed at room temperatures. The X-ray powder diffraction patterns taken at room temperature by Rietveld refinement showed that doped samples of KDP-Mn have the same tetragonal structure of a pure KDP crystal, but with a contraction of the crystalline cell. The behavior of the Raman spectra, in particular the emergence of a new modes...