Expansion velocities of laser-produced plasmas determined from extreme ultraviolet spectral line profiles
Journal Article
·
· Appl. Phys. Lett.; (United States)
The expansion of laser-produced plasma is determined from the shapes of spectral lines of highly ionized iron emitted in the extreme ultraviolet. The plasmas were produced by focusing the pulse from a Nd : glass laser onto solid planar targets, and spectra were recorded with a high-resolution grazing incidence spectrograph. From the Doppler broadening of lines of Fe XX and Fe XXI, expansion velocities of approx.830 km s/sup -1/ were determined. The relative time-averaged ion abundances of Fe XVIII, Fe XIX, Fe XX, and Fe XXI are estimated for three different spectra. The abundances do not differ by more than a factor of 4 for any of the spectra.
- Research Organization:
- E. O. Hulburt Center for Space Research, Naval Research Laboratory, Washington, D. C. 20375
- OSTI ID:
- 7213804
- Journal Information:
- Appl. Phys. Lett.; (United States), Journal Name: Appl. Phys. Lett.; (United States) Vol. 31:9; ISSN APPLA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700102* -- Fusion Energy-- Plasma Research-- Diagnostics
ABUNDANCE
ATOMIC IONS
CHARGED PARTICLES
DOPPLER BROADENING
EMISSION SPECTRA
EXPANSION
ION TEMPERATURE
IONS
IRON IONS
LASER-PRODUCED PLASMA
LINE BROADENING
PLASMA
PLASMA DIAGNOSTICS
PLASMA EXPANSION
SPECTRA
ULTRAVIOLET SPECTRA
700102* -- Fusion Energy-- Plasma Research-- Diagnostics
ABUNDANCE
ATOMIC IONS
CHARGED PARTICLES
DOPPLER BROADENING
EMISSION SPECTRA
EXPANSION
ION TEMPERATURE
IONS
IRON IONS
LASER-PRODUCED PLASMA
LINE BROADENING
PLASMA
PLASMA DIAGNOSTICS
PLASMA EXPANSION
SPECTRA
ULTRAVIOLET SPECTRA