Light scattering measurements of energy partitioning in laser air sparks Conference Paper uri icon

abstract

  • Laser light scattering provides a powerful diagnostic of plasmas and fluids in the form of Thomson and Rayleigh scattering1. In this work, we present time and space resolved collective Thomson scattering measurements of Teand nein the plasma core of atmospheric pressure air sparks generated with a 10ns pulse, 1064nm Nd:YAG laser. In the shockwave region, a combination of Rayleigh scattering and Filtered Rayleigh scattering are used to spatially and temporally resolve temperature, radial velocity and density. Filtered Rayleigh scattering is a technique whereby scattered light is spectrally filtered by an atomic or molecular gas to indirectly extract line shape information. These measurements cover a laser energy range of 30mJ to 100mJ and a temporal duration of 1-5s after spark formation.

name of conference

  • 2014 IEEE 41st International Conference on Plasma Sciences (ICOPS) held with 2014 IEEE International Conference on High-Power Particle Beams (BEAMS)

published proceedings

  • 2014 IEEE 41st International Conference on Plasma Sciences (ICOPS) held with 2014 IEEE International Conference on High-Power Particle Beams (BEAMS)

author list (cited authors)

  • Limbach, C. M., & Miles, R. B.

publication date

  • January 1, 2014 11:11 AM

publisher