Contamination band in Raman spectra of glass recorded under vacuum conditions

被引：0

作者：

Gedeon, Ondrej ^{[1
]}

Gavenda, Tadeas ^{[1
]}

Mishra, Vipin ^{[1
]}

机构：

[1] Univ Chem & Technol, Dept Glass & Ceram, Tech 5, CZ-16628 Prague, Czech Republic

来源：

VIBRATIONAL SPECTROSCOPY | 2023年 / 124卷

关键词：

Raman spectroscopy; Vacuum; Contamination; Glass; SILICATE-GLASSES; SPECTROSCOPY; MELTS; TOOL;

D O I：

10.1016/j.vibspec.2022.103491

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Raman spectra of glass revealed the systematic appearance of the contamination band related to carbon mole-cules deposited on the surface, when recorded in vacuum. It is demonstrated that the band diminishes with increasing pressure in the vacuum chamber. The existence and the intensity of the contamination band depend on the time of laser irradiation; an incubation time in band formation is observed. Other materials were measured, and it is apparent the existence of the contamination band in Raman spectra is material dependent. A simple model explaining the experimental findings, based on the competition between carbon and non-carbon molecules in surface adsorption, is suggested.

引用

页数：5

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