| Autor: |
V.L. Kantsyrev, Austin Stafford, Yusuf Danisman, M. Fatih Yilmaz, P. Wiewior, V. V. Shlyaptseva, Ishor Shrestha, A. Y. Faenov, Alla S. Safronova |
| Rok vydání: |
2015 |
| Předmět: |
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| Zdroj: |
2015 IEEE International Conference on Plasma Sciences (ICOPS). |
| DOI: |
10.1109/plasma.2015.7179879 |
| Popis: |
Linear Discriminant Analysis (LDA) is applied and compared with the Principal Component Analysis (PCA) and the H- and He-like line ratio diagnostics to investigate the electron beam effects on the laser produced K-shell Al synthetic spectra1,2. The experiments were performed at the Leopard Laser Facility of NTF/UNR (1.057 μm Ti:Sapphire/Nd:glass laser system) with 0.8 ns pulses with 15 J of energy, focused into 10 μm diameter spot on the 50 μm thick flat Al foil target. The spectrum was obtained by the high resolution focusing spectrometer with spatial resolution using a spherically bent mica crystal. The plasma electron temperature, density and electron beam fractions of laser produced K-shell Al plasma (Shot 556) were extracted using coefficients of discriminant and principal components produced from the non-LTE collisionally radiative K-shell Al model. The modeled plasma electron temperatures and densities are about Te∼270 eV and ne=3×1021 cm−3 in the presence of electron beams with fraction of f∼0.05 and energy centered at ∼10 keV. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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