Temporal analysis of laser-induced plasma properties as related to laser-induced breakdown spectroscopy

Investigation of helium addition for laser-induced plasma spectroscopy of pure gas phase systems: Analyte interactions and signal enhancement

“…To assist in such a determination, it is useful to quantify the degree of Stark broadening in terms of the corresponding free electron density. The fractional half-widths used to reduce the Stark broadening data were those reported by Griem [35], assuming a plasma temperature of 15,000 K, which is appropriate for the delay times and laser pulse energy used [36]. The inversion of electron densities from Stark widths is rather insensitive to temperature, as related to the corresponding reduced line widths.…”

Three-dimensional distribution of signal from single monodisperse aerosol particles in a laser induced plasma: Initial measurements

“…Second, signal from this end of the plasma may experience less absorption from the plasma since it is nearer to the collecting optics. However, this last possibility is unlikely, since the plasma is under-dense to 288-nm light at its estimated density of approximately 10 18 cm − 3 [20]. Finally the optical collection efficiency in the axial direction may vary.…”

Time-resolved optical emission spectroscopy of laser-produced air plasma

“…[16][17][18][19][20] The wavelength measurements of emission spectra of the CO 2 LIB plasma in N 2 , O 2 , and air have been reported recently by us. [21][22][23] We have also reported studies on the temporal evolution of the LIB plasma of graphite.…”