レーザーラマン分光のための錠剤法

概要

論文の詳細を見る
A study was made on the sample press technique for laser Raman spectroscopy. Although Raman scattering can of course be observed using a powder sample, a pellet sample can provide Raman spectra with a better S/N ratio. An observation of Raman spectra of L-cystine pellet using back illumination showed that the Raman intensity was scarcely affected by the change in pellet thickness. Therefore, it has become clear that the pellet thickness should be made as small as possible in order to reduce the sample amount. A test was conducted on newly devised pellet making technique which would require the smallest possible sample amount. One method is to put sample powder on potassium bromide powder and to press them into a pellet. Another is to make a pellet out of potassium bromide only, drill a small hole in it, put the sample powder into the hole, and again press the pellet. The sample quantity required by the latter method is 0.51.0 mg. The pellets produced by this method provide Raman spectra with a good S/N ratio.