期刊
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY
卷 68, 期 -, 页码 40-45出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.sab.2012.01.011
关键词
LIBS; Double-pulse; Target heating
类别
资金
- National Autonomous University of Mexico [DGAPA-UNAM: IN110109]
- National Council of Science and Technology of Mexico [CONACyT 102364-F]
- DGAPA-UNAM
Orthogonal double-pulse laser ablation on aluminum-based alloy target at atmospheric pressure was investigated by time-resolved optical emission spectroscopy. Studies were performed as a function of the distance from the first pulse plasma induced in air to the sample surface. Double-pulse experimental results were compared to single-pulse laser ablation experiments carried out in a heated target to up to 500 degrees C. Emission line intensification mechanisms are discussed in terms of the sample heating by the pre-ablation pulse. Crater volume was also determined via confocal microscopy for both, double pulse and target heating, experiments. It was found that the emission intensification is mainly due to an enhancement of the ablated mass. The mechanisms for the mass removal increasing are discussed. (C) 2012 Elsevier B.V. All rights reserved.
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