Laser plasma emission of small particles in different gas atmospheres

Alexander Andreev, Toshitsugu Ueda, Muneaki Wakamatsu

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The problem of laser pulse interaction with small solid particles (SSP) in a gas atmosphere when detecting its parameters is a serious one in industrial and environmental applications. Previous investigations have shown the possibility of using the laser induced breakdown method. This method is very sensitive, but for a particle size of less than 0.1 μm the damage threshold of the solid target is very close to the breakdown point of pure gas. At breakdown, a small volume of dense hot plasma emits radiation by which the size and material of particles can be detected. We used an analytical model, simulation code and experiments to analyze this radiation and found that the emitted intensity varied with laser, gas and particle parameters. The increased dependence of SSP plasma emission rate on initial particle volume permits this method to be used for measuring small particle size by using emitted line spectrum at the late time stage.

Original languageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
EditorsK. Sugioka, M.C. Gower, R.F. Haglund, Jr., A. Pique, others and others
Pages413-418
Number of pages6
Volume4637
DOIs
Publication statusPublished - 2002
Externally publishedYes
EventPhoton Processing in Microelectronics and Photonics - San Jose, CA, United States
Duration: 2002 Jan 212002 Jan 24

Other

OtherPhoton Processing in Microelectronics and Photonics
CountryUnited States
CitySan Jose, CA
Period02/1/2102/1/24

Fingerprint

laser plasmas
Plasmas
atmospheres
Lasers
Particle size
Gases
gases
Radiation
Gas lasers
breakdown
Analytical models
Laser pulses
plasma radiation
gas lasers
dense plasmas
high temperature plasmas
yield point
lasers
line spectra
Experiments

Keywords

  • Gas atmosphere
  • Measurement
  • Plasma
  • Pulse laser
  • Radiation
  • Small particle

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

Cite this

Andreev, A., Ueda, T., & Wakamatsu, M. (2002). Laser plasma emission of small particles in different gas atmospheres. In K. Sugioka, M. C. Gower, R. F. Haglund, Jr., A. Pique, & O. and others (Eds.), Proceedings of SPIE - The International Society for Optical Engineering (Vol. 4637, pp. 413-418) https://doi.org/10.1117/12.470648

Laser plasma emission of small particles in different gas atmospheres. / Andreev, Alexander; Ueda, Toshitsugu; Wakamatsu, Muneaki.

Proceedings of SPIE - The International Society for Optical Engineering. ed. / K. Sugioka; M.C. Gower; R.F. Haglund, Jr.; A. Pique; others and others. Vol. 4637 2002. p. 413-418.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Andreev, A, Ueda, T & Wakamatsu, M 2002, Laser plasma emission of small particles in different gas atmospheres. in K Sugioka, MC Gower, RF Haglund, Jr., A Pique & O and others (eds), Proceedings of SPIE - The International Society for Optical Engineering. vol. 4637, pp. 413-418, Photon Processing in Microelectronics and Photonics, San Jose, CA, United States, 02/1/21. https://doi.org/10.1117/12.470648
Andreev A, Ueda T, Wakamatsu M. Laser plasma emission of small particles in different gas atmospheres. In Sugioka K, Gower MC, Haglund, Jr. RF, Pique A, and others O, editors, Proceedings of SPIE - The International Society for Optical Engineering. Vol. 4637. 2002. p. 413-418 https://doi.org/10.1117/12.470648
Andreev, Alexander ; Ueda, Toshitsugu ; Wakamatsu, Muneaki. / Laser plasma emission of small particles in different gas atmospheres. Proceedings of SPIE - The International Society for Optical Engineering. editor / K. Sugioka ; M.C. Gower ; R.F. Haglund, Jr. ; A. Pique ; others and others. Vol. 4637 2002. pp. 413-418
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