Effect of laser-induced crater depth in laser-induced breakdown spectroscopy emission features.
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.
Corsi
Michela
M
Applied Laser Spectroscopy Laboratory, Institute for Chemical-Physical Processes of CNR, Via G. Moruzzi 1, 56124 Pisa, Italy.
Cristoforetti
Gabriele
G
Hidalgo
Montserrat
M
Iriarte
Daniela
D
Legnaioli
Stefano
S
Palleschi
Vincenzo
V
Salvetti
Azenio
A
Tognoni
Elisabetta
E
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
D005740:Gases; D003300:Copper