Explosivevaporization of aerosol drops under irradiationby a CO2 laser beam

Dennis R. Alexander, J. G. Armstrong

Research output: Contribution to journalArticle

20 Citations (Scopus)

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
StatePublished - Feb 1987

Fingerprint

Aerosols
Laser beams
aerosols
laser beams
High energy lasers
irradiance
Laser radiation
Pulsed lasers
Imaging systems
Image processing
image processing
radiant flux density
analyzers
Water
water
lasers
energy

ASJC Scopus subject areas

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

Cite this

Explosivevaporization of aerosol drops under irradiationby a CO2 laser beam. / Alexander, Dennis R.; Armstrong, J. G.

In: Applied optics, Vol. 26, No. 3, 02.1987, p. 533-538.

Research output: Contribution to journalArticle

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