The Influence of the Excitation Intensity on the Laser Spectra of acidified Solutions of 4-Methylumbelliferone
Open Access
- 1 September 1972
- journal article
- Published by Walter de Gruyter GmbH in Zeitschrift für Naturforschung A
- Vol. 27 (8-9) , 1371-1373
- https://doi.org/10.1515/zna-1972-8-939
Abstract
The influence of the excitation intensity on the laser spectra of solutions of 4-methylumbelliferone in HCl/C2H5OH has been investigated. There are three distinct laser emissions at 4100 Å, 4900 Å and 5300 Å, respectively, the third of which only occurs within a HCl-concentration range of 10 -2 m/l < cHCl < 2.5 m/l. This emission is quenched if the laser threshold for the emission of the neutral form of 4-methylumbelliferonc at 4100 Å is exceeded.Keywords
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