Elemental chemical analysis of submerged targets by double-pulse laser-induced breakdown spectroscopy.
Double-pulse laser-induced plasma spectroscopy (DP-LIPS) is applied to submerged targets to investigate its feasibility for elemental analysis. The role of experimental parameters, such as inter-pulse delay and detection time, has been discussed in terms of the dynamics of the laser-induced bubble produced by the first pulse and its confinement effect on the plasma produced by the second laser pulse. The analytical performance of this technique applied to targets in a water environment are discussed. The elemental analysis of submerged copper alloys by DP-LIPS has been compared with conventional (single-pulse) LIBS in air. Theoretical investigation of the plasma dynamics in water bubbles and open air has been performed.
Chemistry Department, University of Bari, Via Orabona 4, 70126, Bari, Italy. alessandro.degiacomo@ba.imip.cnr.it
A
A
De Giacomo
M
M
Dell'Aglio
A
A
Casavola
G
G
Colonna
O
O
De Pascale
M
M
Capitelli