Explosivevaporization of aerosol drops under irradiationby a CO2 laser beam

Dennis R. Alexander, J. G. Armstrong

Research output: Contribution to journalArticle

20 Scopus citations

Abstract

Experimental results on the explosive breakup of water aerosols in response to high-energy CO2 laser radiation are presented for optical size parameters ranging from 6 to 15. The maximum power density used in this work was ∼1.5 MW/cm2. A pulsed N2 laser imaging system coupled to a digital image processing system was used to observe visually the behavior of the drops on breakup. A phase/Doppler particle analyzer system was used to determine the simultaneous size and velocity of expelled particlesat a distance of 2 mm from the drops. Results indicate that the incident irradiance affects the average size of particles expelled, but the average velocity of the expelled particles is not a strong function of the incident irradiance. Dropexplosions resembling jellyfish are reported, webelieve, for the first time in this work.

Original languageEnglish (US)
Pages (from-to)533-538
Number of pages6
JournalApplied optics
Volume26
Issue number3
DOIs
Publication statusPublished - Feb 1987

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ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Engineering (miscellaneous)
  • Electrical and Electronic Engineering

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