Informace o publikaci
Laser-Induced Breakdown Spectrometry in analysis of melts
| Název česky | Analýza tavenin pomocí spektrometrie laserem indukovaného plazmatu |
|---|---|
| Autoři | |
| Rok publikování | 2014 |
| Druh | Konferenční abstrakty |
| Fakulta / Pracoviště MU | |
| Citace | |
| Popis | LIBS is a type of atomic emission spectroscopy which uses a focused highly energetic laser pulse as the excitation source. In principle, any physical state (solid, liquid or gas) can be analyzed by LIBS with low detection limits for most elements. The aim of this work was to construct a new compact experimental setup with unvarying optical path for analysis of melt by means of Laser-Induced Breakdown Spectrometry (LIBS) and to observe an influence of surrounding gas (air, He and Ar) on time resolved Laser-Induced Plasma (LIP) emission. The whole study was performed using glass samples. LIP was produced using Nd:YAG laser (Quantel, France) operated at fundamental wavelenght of 1064 nm and frequency 1 Hz. Laser beam was focused by quartz lens with focal distance 100 mm. Radiation was transported into monochromator TRIAX 320 (Jobin Yvon, France) by optical cable. Monochromatic radiation was detected by the ICC detector (Jobin Yvon, France) for a record of emission spectrum. In case of observing time behavior of LIP signal the photomultiplier R928 with gated assembly C1392 (Hamamatsu, Japan) was used for detection of selected emission line and it was recorded by osciloscope TDS 2024C (Tektronix, USA). Glass samples were placed in a goldsmiths furnace where they were melted at temperature of 900 degree of Celsius. Time behavior of selected emission line of melts was studied under air, He and Ar atmosphere, respectively. |
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