Reheating of a Laser-Produced Plasma by a Second Pulse Laser

Focused radiation of a Nd:YAG laser was used for ablation and production of free sample atoms from electrically conducting and nonconducting solids for analytical purposes. The microplasmas were generated in an argon buffer gas atmosphere at reduced pressure. In order to increase the intensities of analyte lines the microplasmas were reheated by a second Nd:YAG laser after the process of atomization was completed. It is demonstrated for aluminum and manganese in glass and steel samples and for magnesium and manganese in glass, copper, and aluminum that by internal standardization a common calibration curve can be obtained.

[1]  T. Ishizuka,et al.  Atomic emission spectrometry of solid samples with laser vaporization-microwave induced plasma system , 1980 .

[2]  K. Laqua,et al.  Emissionsspektralanalyse mit Anregung des durch Laserstrahlung erzeugten Dampfes fester Proben in einer Mikrowellenentladung—II. Analytische Anwendungen , 1979 .

[3]  P. G. Mitchell,et al.  Direct Determination of Copper in Solids by Direct Current Argon Plasma Emission Spectrometry with Sample Introduction Using Laser Ablation , 1987 .

[4]  K. Niemax,et al.  Internal standardization in laser induced fluorescence spectrometry of microplasmas produced by laser ablation of solid samples , 1990 .

[5]  S. Chenery,et al.  Calibration studies in laser ablation microprobe-inductively coupled plasma atomic emission spectrometry , 1989 .

[6]  K. Niemax,et al.  Temporal and spatial distribution of analyte atoms and ions in microplasmas produced by laser ablation of solid samples , 1990 .

[7]  K. Niemax,et al.  On the internal standardization in optical emission spectrometry of microplasmas produced by laser ablation of solid samples , 1989 .

[8]  D. Cremers,et al.  Spectrochemical Analysis of Liquids Using the Laser Spark , 1984 .

[9]  W. Wiese,et al.  Wavelengths and transition probabilities for atoms and atomic ions: Part 2. Transition probabilities , 1980 .

[10]  K. Niemax,et al.  Optical emission spectrometry and laser-induced fluorescence of laser produced sample plumes. , 1990, Applied optics.

[11]  Soulin Lin,et al.  Studies on the complete laser vaporisation of powdered solid samples into an inductively coupled plasma for atomic emission spectrometry , 1988 .

[12]  G. Hieftje,et al.  Comparison of Different Excitation Sources and Normalization Techniques in Laser-Ablation AES Using a Photodiode-Based Spectrometer , 1990 .