期刊
JOURNAL OF APPLIED PHYSICS
卷 96, 期 2, 页码 975-982出版社
AMER INST PHYSICS
DOI: 10.1063/1.1759397
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Plasma electron density and atomic population densities in the plasma plume produced by a laser ablation of aluminum metal were determined in various ambient gases at relatively high pressures. The method is based on the fit of a spectral line profile of Al(I) P-2(o)-S-2 emission to the theoretical spectrum obtained by one-dimensional radiative transfer calculation. The electron density was higher for a higher ambient gas pressure, suggesting the confinement of the plume by an ambient gas. The electron density also depends on the type of ambient gases, i.e., it increased in the order He
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