29 May 2001 Detailed atomic kinetics model for the spectroscopic analysis of laser-ablated plasma plumes
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Proceedings Volume 4276, Commercial and Biomedical Applications of Ultrashort Pulse Lasers; Laser Plasma Generation and Diagnostics; (2001); doi: 10.1117/12.428007
Event: Photonics West 2001 - LASE, 2001, San Jose, CA, United States
Abstract
Atomic kinetics and spectral modeling have revealed that level populations of plasma atoms in laser-ablated plumes may behave in a time-dependent manner, i.e. far from Local Thermodynamic Equilibrium, and that cascading population mechanisms can lead to long-lived atomic line emission. The time-scales associated to this phenomena and the interpretation of spectral data critically depend on the details of the atomic kinetics model and the quality of the rate coefficients. In order to generate accurate atomic data for neural atoms and low-charge ions present in plasma plumes, a semi-empirical techniques has been implemented in the Los Alamos atomic structure and electron scattering codes. This procedure has allowed neutrals with complex atomic structure--such as those atoms from elements often used in industrial applications--to be calculated with spectroscopic quality. Details of the atomic kinetics model for the case of a Li-Ag plasma plume and the rates generated with this new procedure are presented and discussed.
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Manolo E. Sherrill, Roberto C. Mancini, James E. Bailey, Alex B. Filuk, Brian F. Clark, Patrick Lake, Joseph Abdallah, "Detailed atomic kinetics model for the spectroscopic analysis of laser-ablated plasma plumes", Proc. SPIE 4276, Commercial and Biomedical Applications of Ultrashort Pulse Lasers; Laser Plasma Generation and Diagnostics, (29 May 2001); doi: 10.1117/12.428007; https://doi.org/10.1117/12.428007
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KEYWORDS
Plasma

Chemical species

Ionization

Lithium

Silver

Spectroscopy

Laser spectroscopy

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