title: Effect of laser-induced crater depth in laser-induced breakdown spectroscopy emission features.
abstract: The influence of crater depth on plasma properties and laser-induced breakdown spectroscopy (LIBS) emission has been evaluated. Laser-induced plasmas were generated at the surface and at the bottom of different craters in a copper sample. Plasmas produced at the sample surface and at the bottom of the craters were spatially and temporally resolved. LIBS emission, temperature, and electronic number density of the plasmas were evaluated. It is shown that the confinement effect produced by the craters enhances the LIBS signal from the laser-induced plasmas.
authors.affiliation: Applied Laser Spectroscopy Laboratory, Institute for Chemical-Physical Processes of CNR, Via G. Moruzzi 1, 56124 Pisa, Italy.
authors.forename: Michela
authors.initials: M
authors.lastname: Corsi
authors.forename: Gabriele
authors.initials: G
authors.lastname: Cristoforetti
authors.forename: Montserrat
authors.initials: M
authors.lastname: Hidalgo
authors.forename: Daniela
authors.initials: D
authors.lastname: Iriarte
authors.forename: Stefano
authors.initials: S
authors.lastname: Legnaioli
authors.forename: Vincenzo
authors.initials: V
authors.lastname: Palleschi
authors.forename: Azenio
authors.initials: A
authors.lastname: Salvetti
authors.forename: Elisabetta
authors.initials: E
authors.lastname: Tognoni
mesh_terms: D003300:Copper / Q000032:analysis* / Q000737:chemistry* / Q000528:radiation effects; D005740:Gases / Q000032:analysis* / Q000737:chemistry; D007834:Lasers; D013057:Spectrum Analysis / Q000379:methods*; D013499:Surface Properties; D013696:Temperature
chemical_list: D005740:Gases; D003300:Copper