Title

Thermodynamic And Spectroscopic Properties Of Nd:Yag-Co2 Double-Pulse Laser-Induced Iron Plasmas

Keywords

Double pulse LIBS; Laser ablation; Laser heating; Laser-induced breakdown spectroscopy; Laser-induced particles

Abstract

Double-Pulse Laser-Induced Breakdown Spectroscopy of iron using both Nd:YAG and TEA-CO2 lasers has been investigated to better understand mechanisms of signal enhancement. The signal dependence on the delay between the two laser pulses shows an enhanced signal when the CO2 laser pulse interacts with the sample before the Nd:YAG pulse. Signal kinetics and a simple model of sample heating by the CO2 pulse show that the enhancement during the first 700 ns is due primarily to sample heating. Images of the sample surface after ablation as well as time-integrated pictures of the plasma suggest that particles are ejected from the surface during the first microseconds after the arrival of the CO2 pulse and provide fuel for the subsequent plasma created by the Nd:YAG laser. © 2009 Elsevier B.V.

Publication Date

10-1-2009

Publication Title

Spectrochimica Acta - Part B Atomic Spectroscopy

Volume

64

Issue

10

Number of Pages

961-967

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1016/j.sab.2009.07.023

Socpus ID

72049085283 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/72049085283

This document is currently not available here.

Share

COinS