title: Laser plasma spectroscopy of Al-Cu-Fe quasicrystal an d alloy.
abstract: 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.
authors.affiliation: Dipartimento di Chimica, Universita' di Roma La Sapienza, P.le A. Moro 5, 00185, Roma, Italy.
authors.forename: M
authors.initials: M
authors.lastname: Satta
authors.forename: X
authors.initials: X
authors.lastname: Zeng
authors.forename: X
authors.initials: X
authors.lastname: Mao
authors.forename: S S
authors.initials: SS
authors.lastname: Mao
authors.forename: R E
authors.initials: RE
authors.lastname: Russo
authors.forename: A
authors.initials: A
authors.lastname: Giardini
authors.forename: A
authors.initials: A
authors.lastname: Mele
mesh_terms: D000497:Alloys / Q000737:chemistry*; D000535:Aluminum / Q000737:chemistry*; D003300:Copper / Q000737:chemistry*; D003460:Crystallization; D003461:Crystallography; D007501:Iron / Q000737:chemistry*; D007834:Lasers; D013057:Spectrum Analysis / Q000379:methods*
chemical_list: D000497:Alloys; D003300:Copper; D000535:Aluminum; D007501:Iron