Autor: |
B. K. F. Young, Al Osterheld, Richard E. Stewart, Dwight Price, Takako Kato, Richard M. More, Ronnie Shepherd, R. S. Walling |
Rok vydání: |
1997 |
Předmět: |
|
Zdroj: |
Journal of Quantitative Spectroscopy and Radiative Transfer. 58:911-916 |
ISSN: |
0022-4073 |
Popis: |
We have conducted experiments to determine the effects of target thickness on the time history and spectra from short pulse laser produced plasmas. A reduced contribution to conduction cooling was achieved by using thin targets. The experiment was done using aluminum foils of thickness ranging from 250 A to 1250 A. The foils were heated with a 400 nm, 150 fs (FWHM), 250 mJ laser focused to a spot size of 2 μm, resulting in a peak intensity of 5.3 × 1019 W/cm2. The ls2-ls2p transition in He-like aluminum was temporally resolved using a 900 fs x-ray streak camera. An analytic model is derived to describe the time rate of change of the ls2-ls2p transition in He-like aluminum. |
Databáze: |
OpenAIRE |
Externí odkaz: |
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