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Phys Rev E Stat Nonlin Soft Matter Phys. 2007 Feb;75(2):026401. doi: 10.1103/PhysRevE.75.026401. Epub 2007 Feb 01.

Analysis of x-ray polarization to determine the three-dimensionally anisotropic velocity distributions of hot electrons in plasma produced by ultrahigh intensity lasers.

Physical review. E, Statistical, nonlinear, and soft matter physics

Y Inubushi, T Kai, T Nakamura, S Fujioka, H Nishimura, K Mima

Affiliations

  1. Institute of Laser Engineering, Osaka University, 2-6 Yamada-oka, Suita, Osaka 565-0871, Japan. [email protected]

PMID: 17358426 DOI: 10.1103/PhysRevE.75.026401

Abstract

A new polarization spectroscopy model has been developed to analyze energetic electrons distributed in a three-dimensional phase space. This model calculates the polarization degrees for a given line of sight. Time-dependent polarization degrees of Healpha line emitted from heliumlike chlorine ions was obtained for two different lines of sight by using three-dimensional electron velocity distributions provided with two-dimensional particle-in-cell simulations. These results demonstrate that the polarization degrees are sensitively dependent on the profile of the electron velocity distributions which are affected by the polarization of the laser pulse.

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