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Laser Plasma Spectroscopy of Al-Cu-Fe Quasicrystal and Alloy

Volume 57, Number 7 (July 2003) Page 737-743

Satta, M.; Zeng, X.; Mao, X.; Mao, S.S.; Russo, R.E.; Giardini, A.; Mele, A.

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 observed 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.