%0 Journal Article %K Target %K Temperature %K USA %K Emission %K System %K Ablation %K Laser %K Laser ablation %K Laser ablation %K Spectroscopy %K P %K Time %K Ca %K Composition %K Plasma %K Atomic emission %K Number %K Alloy %K Mechanism %K Mechanisms %K Systems %K Electron number densities %K Plasmas %K Density %K Targets %K Aluminum %K Electron %K Electron number density %K Number density %K Spectra %K Spectrum %K Laser-induced plasma %K Laser-induced plasma %K Laser-induced plasmas %K Results %K Irradiation %K Laser irradiation %K Plasma formation %K Laser plasma %K Quasicrystal %K Emission spectrum %K Emission-spectra %K Emission spectrum %K Formation mechanism %K La %K Plasma spectroscopy %A Mauro Satta %A Xianzhong Zeng %A Xianglei Mao %A Samuel S Mao %A Richard E Russo %A Anna Giardini Guidoni %A Aldo Mele %B Applied Spectroscopy %D 2003 %F Laser %G eng %N 7 %P 737-743 %T Laser plasma spectroscopy of Al-Cu-Fe quasicrystal and alloy %V 57 %2 LBNL-53270 %8 07/2003 %! Appl Spectrosc. %X

Electron number density and temperature were determined from laser-induced plasmas produced by irradiating Al-Cu-Fe targets of a quasicrystal and of an alloy of similar composition. The Al(I) atomic emission spectra of the two systems were measured as a function of the distance from the target and of the time delay after laser irradiation. Differences of plasma characteristics were o served for laser ablation of quasicrystal and alloy targets, and the results were interpreted on the basis of different plasma formation mechanisms for the two systems