Related Experiment Video
Updated: Jul 29, 2026

Investigation of Early Plasma Evolution Induced by Ultrashort Laser Pulses
Published on: July 2, 2012
Charge-state distribution and Doppler effect in an expanding photoionized plasma
M E Foord1, R F Heeter, P A M van Hoof
1Lawrence Livermore National Laboratory, University of California, Livermore, CA 94551, USA.
Abstract:
The charge state distributions of Fe, Na, and F are determined in a photoionized laboratory plasma using high resolution x-ray spectroscopy. Independent measurements of the density and radiation flux indicate unprecedented values for the ionization parameter xi=20-25 erg cm s(-1) under near steady-state conditions. Line opacities are well fitted by a curve-of-growth analysis which includes the effects of velocity gradients in a one-dimensional expanding plasma. First comparisons of the measured charge state distributions with x-ray photoionization models show reasonable agreement.
Related Concept Videos
Photoelectric Effect
Doppler Effect - I
Continuous Charge Distributions
The electric charge can also be subjected to an analogical...
Electric Field of a Charged Disk
The system's symmetry is in the cylindrical directions across the plane of the charge. As a result, the electric fields created by various surface charge elements nullify each other in the direction parallel to the surface. Thereby, the resulting electric field is perpendicular to the plane. Since the disk is...
Energy Associated With a Charge Distribution
Inductively Coupled Plasma Atomic Emission Spectroscopy: Principle
The ions and electrons produced interact with the fluctuating magnetic field created by a water-cooled...

