Simultaneous temperature, density and velocity measurements in laser-generated plasmas by rayleigh and filtered rayleigh scattering Conference Paper uri icon

abstract

  • Simultaneous Rayleigh and filtered Rayleigh scattering observations are combined to characterize the shockwave formed by a 30mJ laser generated air plasma between 0.75 and 4 μs after formation. A new variation on the Filtered Rayleigh Scattering technique is presented which allows tempera- ture, density and radial velocity to be measured simultaneously, assuming a cylindrically symmetric blast wave expansion. The resulting temperature, density and velocity dataset shows good agreement with a modified analyt- ical model of blast wave evolution. The energy deposited by the shockwave beyond 1.25mm radius is estimated from the data to be 8±1 mJ. This result is discussed in the context of net energy balance.

author list (cited authors)

  • Limbach, C. M., & Miles, R. B.

publication date

  • January 2014