Accession Number:

ADA256909

Title:

Diagnosis of Plasma States in X-Ray Laser Experiments

Descriptive Note:

Corporate Author:

FOREIGN AEROSPACE SCIENCE AND TECHNOLOGY CENTER WRIGHT-PATTERSON AFB OH

Report Date:

1992-10-01

Pagination or Media Count:

16.0

Abstract:

At an LF-12 laser installation, an Nd glass laser of approximately 1. 5 ns pulse width with 500 to 600 J was focussed into a line 120 micrometers wide and 20 mm long and then onto a 1.5 mm thick germanium plane target. A plane crystal spectrograph wavelength measurement range was between 0.6 and 0.9 nm with a spatial resolving power was placed in the target chamber to diagnose the germanium plasma state. The corresponding intensity ratio between the quasi-Ne ion spectral lines with 2p-nd n greater than or equal to 4 energy level transition was used to estimate the plasma electron temperature at 400 to 600 EV. In the laboratory, the measured line spectrum was mainly generated by quasi- Ne Ge XXIII ions next were the spectral lines generated by quasi-F Ge XXIV ions the spectral lines generated by quasi-Na Ge XXII ions were relatively weak. In addition, the axial-direction distribution uniformity of linear plasma, and the lateral-direction distribution characteristics of ions were provisionally observed. X-ray laser and plasma parameters.

Subject Categories:

  • Lasers and Masers
  • Atomic and Molecular Physics and Spectroscopy
  • Particle Accelerators
  • Plasma Physics and Magnetohydrodynamics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE