Raman Spectroscopy of Lightening Elements

  • Berg, Rolf W. (Project Manager)

Project Details


Laser Raman spectroscopy can be used to nondestructively measure molecular species that are found in pressurized
tungsten-halogen bulbs. Reactions are studied in experimental bulbs filled bromine containing mulecules, inert gasses (Kr or Ar) and rare earth salts. The molecular composition is studied versus accumulated burning time. Compounds HBr, CO, and SiF4, etc. are expected to form in the hulb. Raman spectroscopy can also be used to identify solid deposits (e.g. W oxides) on the inside surface of the glass envelope. The total pressure in the bulb can be measured nondestructively by Rayleigh scattering.
Effective start/end date01/02/199931/01/2002