Accession Number:

ADA503332

Title:

Laser Spectroscopy of Levitated Microparticles in Molecular Plasmas

Descriptive Note:

Final rept. 8 Dec 2006-8 Dec 2007

Corporate Author:

CAMBRIDGE UNIV (UNITED KINGDOM)

Personal Author(s):

Report Date:

2008-05-27

Pagination or Media Count:

20.0

Abstract:

During the past decade there has been increasing interest in the Chemistry and Physics of small particles in low temperature electric plasmas. This project aims to study spherical particles with the dimensions of microns microspheres levitated in molecular plasmas. A non invasive optical technique, Raman spectroscopy, is being used to probe the surface of the microspheres. Enhancement of the Raman signal will be achieved using whispering gallery modes wgms in the microspheres, where the laser light is entrained at or near the particle surface. A range of particle types will be used in conjunction with different molecular plasmas. The effect of plasma parameters on the molecular structure of the surface of the microspheres will provide fundamental information on plasma-particle interactions.

Subject Categories:

  • Inorganic Chemistry
  • Lasers and Masers
  • Atomic and Molecular Physics and Spectroscopy
  • Plasma Physics and Magnetohydrodynamics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE