Spatially resolved density and ionization measurements of shocked foams using x-ray fluorescence.

Autor: MacDonald, M. J., Keiter, P. A., Montgomery, D. S., Scott, H. A., Biener, M. M., Fein, J. R., Fournier, K. B., Gamboa, E. J., Kemp, G. E., Klein, S. R., Kuranz, C. C., LeFevre, H. J., Manuel, M. J.-E., Wan, W. C., Drake, R. P.
Předmět:
Zdroj: Journal of Applied Physics; 2016, Vol. 120 Issue 12, p125901-1-125901-6, 6p, 1 Diagram, 6 Graphs
Abstrakt: We present experiments at the Trident laser facility demonstrating the use of x-ray fluorescence (XRF) to simultaneously measure density, ionization state populations, and electron temperature in shocked foams. An imaging x-ray spectrometer obtained spatially resolved measurements of Ti K-a emission. Density profiles were measured from K-a intensity. Ti ionization state distributions and electron temperatures were inferred by fitting K-a spectra to spectra from CRETIN simulations. This work shows that XRF provides a powerful tool to complement other diagnostics to make equation of state measurements of shocked materials containing a suitable tracer element. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index