Double pulse laser ablation and plasma: time resolved spectral measurements

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Authors

NOVOTNÝ Karel LUTZKÝ Filip GALIOVÁ Michaela KAISER Jozef MALINA Radomír KANICKÝ Viktor OTRUBA Vítězslav

Year of publication 2008
Type Article in Periodical
Magazine / Source CHEMICKÉ LISTY
MU Faculty or unit

Faculty of Science

Citation
Field Analytic chemistry
Keywords laser induced breakdown spectroscopy; LIBS; double pulse LIBS; plasma characterization; time resolved measurement; ICCD; photomultiplier
Description Most of the studies on double-pulse LIBS have been performed using an intensified CCD (ICCD) detection. Using ICCD, spectral information over wide range can be recorded on each laser pulse. Besides ICCD, also photomultipliers (PMT) can be used to monitor single emission lines. The output of the PMT is a current proportional to the intensity of the incident light. PMTs are not integrating devices as they provide a signal simultaneous in time with the incident light intensity. The combination of ICCD and PMT can be useful to determine both, the spectral and time resolved plasma emission. In this study, we present orthogonal re-heating double pulse experimental system equipped with both ICCD and PMT detection and preliminary measurements of temperatures of plasmas generated on an iron sample.
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