title: Effects of sample temperature in femtosecond single-pulse laser-induced breakdown spectroscopy.
abstract: As much as tenfold atomic emission enhancements have been observed in experiments combining nanosecond (ns) and femtosecond (fs) laser pulses in an orthogonal dual-pulse configuration for laser-induced breakdown spectroscopy (ns-fs orthogonal dual-pulse LIBS). In the examination of one of several potential sources of these atomic emission enhancements (sample heating by a ns air spark), minor reductions in atomic emission and as much as 15-fold improvements in mass removal have been observed for fs single-pulse LIBS of heated brass and aluminum samples. These results suggest that, although material removal with a high-powered, ultrashort fs pulse is temperature dependent, sample heating by the ns air spark is not the source of the atomic emission enhancements observed in ns-fs orthogonal dual-pulse LIBS.
authors.affiliation: Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, USA.
authors.forename: Jon
authors.initials: J
authors.lastname: Scaffidi
authors.forename: William
authors.initials: W
authors.lastname: Pearman
authors.forename: J Chance
authors.initials: JC
authors.lastname: Carter
authors.forename: Bill W
authors.initials: BW
authors.lastname: Colston
authors.forename: S Michael
authors.initials: SM
authors.lastname: Angel