1999/11/02 by C. Masciovecchio, Masciovecchio, C., V. Mazzacurati +32
Biochemistry, Genetics and Molecular Biology · Engineering · Physics and Astronomy · #Atomic and Subatomic Physics Research #Disordered Systems and Neural Networks (cond-mat.dis-nn) #FOS: Physical sciences #Photoacoustic and Ultrasonic Imaging #Spectroscopy Techniques in Biomedical and Chemical Research #cond-mat.dis-nn
paper · pdf · doi:10.48550/arxiv.cond-mat/9911022
10 pages and 4 figures
arxiv created 1999/11/02 · openalex publication_date 1999/11/02 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
New temperature dependent inelastic x-ray (IXS) and Raman (RS) scattering data are compared to each other and with existing inelastic neutron scattering data in vitreous silica (v-SiO2), in the 300 - 1775 K region. The IXS data show collective propagating excitations up to Q=3.5 nm-1. The temperature behaviour of the excitations at Q=1.6 nm-1 matches that of the boson peak found in INS and RS. This supports the acoustic origin of the excess of vibrational states giving rise to the boson peak in this glass.