The Laser Ablation of Aluminum at 193, 248 and 351 nm

Abstract

Pulsed laser ablation of an aluminum target at 193,248 and 351 nm has been investigated by laser induced fluorescence (LIF) spectroscopy. Velocity distributions of the ablated Al atoms have been measured directly by monitoring their flight times from the target to the probe laser beam, and by Doppler laser spectroscopy. The velocity distributions resulting from the three wavelengths can all be characterized as hyperthermal, with average velocities of between 4.5 x 10 to the fifth power cm/s and 6.5 x 10 to the fifth power cm/s over a fluence range of 0.3-6.5 J/cm2. Average values of the Al atom distribution can also be derived by measuring the AlO internal energy distribution of the hot Al atom reaction with low pressures of O2.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1991
Accession Number
ADA237574

Entities

People

  • A. P. Salzberg
  • Brad R Weiner
  • Hongxin Wang

Organizations

  • University of Puerto Rico

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Chemistry
  • Critical Temperature
  • Dye Lasers
  • Excimer Lasers
  • Films
  • Kinetic Energy
  • Laser Beams
  • Laser Induced Fluorescence
  • Laser Spectroscopy
  • Lasers
  • Measurement
  • Military Research
  • Physics
  • Puerto Rico
  • Spectroscopy
  • Surface Temperature
  • Thin Films

Fields of Study

  • Physics

Readers

  • Nuclear and Radiation Engineering.
  • Pulsed Power and Plasma Physics.
  • Spectroscopy.

Technology Areas

  • Directed Energy
  • Directed Energy - Lasers