Characterization of Particulates Accompanying Laser Ablation of NaNO3-Reference-Cited by-同舟云学术

Characterization of Particulates Accompanying Laser Ablation of NaNO3

Published:1997-05 Issue:5 Volume:51 Page:707-717
ISSN:0003-7028
Container-title:Applied Spectroscopy
language:en
Short-container-title:Appl Spectrosc

Author:

Webb R. L.¹,Dickinson J. T.¹,Exarhos G. J.¹

Affiliation:

1. Department of Physics, Washington State University, Pullman, Washington 99164-2814 (R.L.W., J.T.D.), and Pacific Northwest Laboratory, Richland, Washington 99352 (G.J.E.)

Abstract

We present observations of submicrometer- to micrometer-sized particles generated by high-fluence (≥10 J/cm2) 248-nm laser ablation of single-crystal NaNO3 in vacuum and at atmospheric pressure. Small particles (50–200 nm in diameter) are ejected by hydrodynamic sputtering. Larger particles (1–20 μm in diameter) are produced by cavitation and spallation in the melt. Many particles formed in air carry electric charge, with roughly equal numbers of positively and negatively charged particles. The particle composition is consistent with substantial nitrate decomposition. The implications of these observations with respect to laser-based chemical analysis are discussed.

Publisher

SAGE Publications

Subject

Spectroscopy,Instrumentation

Link

http://journals.sagepub.com/doi/pdf/10.1366/0003702971940855

Reference36 articles.

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2. Smith M. R., Koppenaal D. W., Farmer I. O. T., in Laser Ablation: Mechanisms and Applications II, Miller J. C., Geohegan D. B., Eds. (American Institute of Physics, Washington, D.C., 1994), p. 117.

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