X-ray emission, ablation pressure, and preheating for foils irradiated at 0. 26. mu. m wavelength
Journal Article
·
· Phys. Fluids; (United States)
OSTI ID:5142162
The x-ray emission, ablation pressure, and preheating for foils irradiated with a 0.26 ..mu..m laser at intensities approx.10/sup 15/ W cm/sup -2/ are studied. The foils are Al with various thicknesses, coated or uncoated with CH or Au. The x-ray emission and conversion efficiency are obtained with a multichannel x-ray diode spectrometer, the ablation pressures are deduced from shock transit times, and the rear temperatures are inferred from x-ray pyrometry. For thin foils (<<12 ..mu..m), the rear temperatures can be predicted reasonably well with the use of the front x-ray spectra. For thick foils shock preheating is dominant.
- Research Organization:
- Groupe de Recherches Coordonnees, Interaction Laser Matiere, Ecole Polytechnique, 91128 Palaiseau Cedex, France
- OSTI ID:
- 5142162
- Journal Information:
- Phys. Fluids; (United States), Journal Name: Phys. Fluids; (United States) Vol. 28:11; ISSN PFLDA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700101 -- Fusion Energy-- Plasma Research-- Confinement
Heating
& Production
700102* -- Fusion Energy-- Plasma Research-- Diagnostics
ABLATION
ALUMINIUM
COATINGS
CONVERSION
DIMENSIONS
ELECTROMAGNETIC RADIATION
ELEMENTS
EMISSION
ENERGY CONVERSION
FOILS
GOLD
HEATING
IONIZING RADIATIONS
LASER-PRODUCED PLASMA
MATERIALS
MEASURING INSTRUMENTS
METALS
PETROCHEMICALS
PETROLEUM PRODUCTS
PHOTON EMISSION
PLASMA
PLASMA DIAGNOSTICS
PLASMA HEATING
PLASMA PRESSURE
PLASTICS
PULSES
RADIATIONS
SHOCK WAVES
SPECTROMETERS
SYNTHETIC MATERIALS
TEMPERATURE MEASUREMENT
THICKNESS
TRANSITION ELEMENTS
VISIBLE RADIATION
X RADIATION
X-RAY SPECTROMETERS
700101 -- Fusion Energy-- Plasma Research-- Confinement
Heating
& Production
700102* -- Fusion Energy-- Plasma Research-- Diagnostics
ABLATION
ALUMINIUM
COATINGS
CONVERSION
DIMENSIONS
ELECTROMAGNETIC RADIATION
ELEMENTS
EMISSION
ENERGY CONVERSION
FOILS
GOLD
HEATING
IONIZING RADIATIONS
LASER-PRODUCED PLASMA
MATERIALS
MEASURING INSTRUMENTS
METALS
PETROCHEMICALS
PETROLEUM PRODUCTS
PHOTON EMISSION
PLASMA
PLASMA DIAGNOSTICS
PLASMA HEATING
PLASMA PRESSURE
PLASTICS
PULSES
RADIATIONS
SHOCK WAVES
SPECTROMETERS
SYNTHETIC MATERIALS
TEMPERATURE MEASUREMENT
THICKNESS
TRANSITION ELEMENTS
VISIBLE RADIATION
X RADIATION
X-RAY SPECTROMETERS