Minimally destructive and multi-element analysis of steel alloys by argon fluoride laser-induced plume emissions

S. K. Lau, Nai Ho CHEUNG

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

A minimally destructive and multi-element analysis of steel alloys by argon fluoride laser-induced plume emissions was reported. The Nd: YAG laser pulse was directed normally onto the flat surface of the target cylinder, which was rotating about its axis of symmetry. The pulse energy was typically 120μJ and fluence was about 6 J cm-2. The ArF laser pulses was focused to a 2 mm diameter spot at the plane of the plume, and barely irradiated the target surface. Plume emissions were collected along the longitudinal direction but slightly tilted up to avoid the reflected 193 nm light. The ablated surface was inspected under the optical microscope and correlated with the photoacoustic signal. It was observed that the ArF enhanced analyte emissions were synchronous with the ArF pulse and the continuum background was dim, both indicative of laser excited atomic fluorescence (LEAF).

Original languageEnglish
Pages (from-to)835-838
Number of pages4
JournalApplied Spectroscopy
Volume63
Issue number7
DOIs
Publication statusPublished - Jul 2009

Scopus Subject Areas

  • Instrumentation
  • Spectroscopy

User-Defined Keywords

  • ArF laser
  • Argon fluoride laser
  • Laser-excited atomic fluorescence
  • Laser-induced breakdown spectroscopy
  • LEAF
  • LIBS
  • Minimally destructive analysis
  • Stainless steel

Fingerprint

Dive into the research topics of 'Minimally destructive and multi-element analysis of steel alloys by argon fluoride laser-induced plume emissions'. Together they form a unique fingerprint.

Cite this