Reduced conduction cooling in high energy-density plasmas using ultrashort pulse laser heated thin foil targets

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:	Radiation Materials science business.industry Streak camera chemistry.chemical_element Plasma Laser Atomic and Molecular Physics and Optics Spectral line law.invention Full width at half maximum Optics chemistry Aluminium law Atomic physics business Spectroscopy FOIL method Ultrashort pulse laser
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:	https://explore.openaire.eu/search/publication?articleId=doi_________::f5b69dd637a0168b096d133bb8a6ea0b https://doi.org/10.1016/s0022-4073(97)00097-6 Zobrazit plný text záznamu Full Text from ScienceDirect