Calculation of Heating by CW Laser of Metal Nanoparticles Suspended in a Droplet of Liquid Fuel

Abstract

We develop formulae to determine the temperature of small particles heated by a continuous wave laser while suspended in a droplet of an electromagnetically absorptive medium (e.g. a droplet of fuel). Using these formulae along with the Mie theory of scattering, we calculate thetemperatures that could theoretically be reached by aluminum and aluminum oxide particles suspended in a droplet of JP-10 under a 25 Watt,10.6 m CW laser. Mie theory predicts a significantly higher scattering cross section for aluminum nanoparticles than aluminum oxide, and thus,we find a significantly higher equilibrium temperature. We also find that JP-10 absorption and vaporization play a significant role in the heating process.

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Document Details

Document Type
Technical Report
Publication Date
Nov 21, 2019
Accession Number
AD1087659

Entities

People

  • Mark C Palenik

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Absorption
  • Absorption Cross Sections
  • Aluminum Oxides
  • Chemical Reactions
  • Combustion
  • Diffraction
  • Fluid Dynamics
  • Ignition
  • Laser Beams
  • Lasers
  • Metallic Nanoparticles
  • Military Research
  • Nanoparticles
  • Optical Properties
  • Phase Transformations
  • Radiation
  • Scattering

Fields of Study

  • Physics

Readers

  • Aerosol Science/Aerosol Physics
  • Electromagnetic Wave Scattering and Antenna Radiation Engineering
  • Petroleum Engineering

Technology Areas

  • Biotechnology
  • Directed Energy
  • Directed Energy - Lasers