Accession Number:

AD1087659

Title:

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

Descriptive Note:

Technical Report,21 Jun 2019,23 Sep 2019

Corporate Author:

NAVAL RESEARCH LAB WASHINGTON DC WASHINGTON United States

Personal Author(s):

Report Date:

2019-11-21

Pagination or Media Count:

18.0

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.

Subject Categories:

  • Inorganic Chemistry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE