Spectroscopy and Spectral Analysis, Volume. 37, Issue 1, 236(2017)

Elemental Analysis of Alloys with Picosecond Dual-Pulse LA-LIBS under Low Sample Destruction

WANG Fu-juan1、*, LI Run-hua2, WANG Zi-xin1, ZENG Xue-ran1, CAI Zhi-gang1, and ZHOU Jian-ying1
Author Affiliations
  • 1[in Chinese]
  • 2[in Chinese]
  • show less

    A study on elemental analysis of alloy samples under low sample destruction with dual-pulse laser-ablation laser induced breakdown spectroscopy (LA-LIBS) based on one picosecond Nd∶YAG laser is presented. In LA-LIBS, low pulse energy 532 nm laser was used for sample ablation and high pulse energy, time–delayed 1 064 nm laser was used for re-excitation of the ablated samples to enhance atomic emissions of the laser-induced plasma and signal detection sensitivity. The influence of pulse energies of the ablation laser and excitation laser to the signal intensities was studied experimentally. I was observed that Cu 324.75 nm line intensity in LA-LIBS was enhanced 86 times in comparison with that obtained in SP-LIBS under 10 μJ pulse energy of the ablation laser and 2.5 mJ pulse energy of the excitation laser. The diameter of the crater generated in LA-LIBS was less than 10 μm. It is demonstrated the possibility of using dual-pulse LA-LIBS to realize elemental analysis of solid sample under low sample destruction. This technique is valuable for elemental analysis of precious samples and 2D elements mapping under high spatial resolution.

    Tools

    Get Citation

    Copy Citation Text

    WANG Fu-juan, LI Run-hua, WANG Zi-xin, ZENG Xue-ran, CAI Zhi-gang, ZHOU Jian-ying. Elemental Analysis of Alloys with Picosecond Dual-Pulse LA-LIBS under Low Sample Destruction[J]. Spectroscopy and Spectral Analysis, 2017, 37(1): 236

    Download Citation

    EndNote(RIS)BibTexPlain Text
    Save article for my favorites
    Paper Information

    Received: Dec. 14, 2015

    Accepted: --

    Published Online: Feb. 9, 2017

    The Author Email: Fu-juan WANG (wangfj@mail.sysu.edu.cn)

    DOI:10.3964/j.issn.1000-0593(2017)01-0236-05

    Topics