Simulation of laser plasma emission characteristics of small solid particles in different gas atmospheres at various pressures

• Andreev Alexander

  Institute of Laser Physics

• Ueda Toshitsugu

  Yokogawa Electric Corporation

Abstract

The problem of small solid particle size and material detection is important for industrial and environmental applications. Previous investigations have shown the possibility of using the laser breakdown method to address the first issue; the sensitivity of this method is a thousand times higher than that of conventional methods. However, for small particle sizes, the damage threshold of the solid target in this case is very close to the breakdown point of pure gas. After breakdown, there is a small volume of dense hot plasma that emits radiation. We analyzed this radiation especially at the late stage using an analytical model and simulation code, and found that the emission intensity varied depending on the laser type and plasma parameters including initial particle size.

Journal

• IEEJ Transactions on Sensors and Micromachines

  IEEJ Transactions on Sensors and Micromachines 121 (11), 593-598, 2001

  The Institute of Electrical Engineers of Japan

Keywords

• laser pulse
• small solid particle size
• laser breakdown in gas
• laser plasma line emission

Details

• CRID: 1390282679437060096
• NII Article ID: 10007234641
• NII Book ID: AN1052634X
• DOI: 10.1541/ieejsmas.121.593
• ISSN: 13475525
• ISSN: 13418939
• NDL BIB ID: 5962909
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I5962909
• Web Site: http://www.jstage.jst.go.jp/article/ieejsmas1995/121/11/121_11_593/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed