Extreme ultraviolet emission from dense plasmas generated with sub-10-fs laser pulses

Details Extreme ultraviolet emission from dense plasmas generated with sub-10-fs laser pulses Extreme ultraviolet emission from dense plasmas generated with sub-10-fs laser pulses

2008-06-07

arxiv.org/abs/0806.1302v1

Physics

Plasma Physics

22 pages, 11 figures. The following article has been submitted to Physics of Plasmas. After it is published, it will be found

Scientific paper

10.1063/1.2988767

The extreme ultraviolet (XUV) emission from dense plasmas generated with sub-10-fs laser pulses with varying peak intensities up to 3*10^16 W/cm^2 is investigated for different target materials. K shell spectra are obtained from low Z targets (carbon and boron nitride). In the spectra a series limit for the hydrogen and helium like resonance lines is observed indicating that the plasma is at high density and pressure ionization has removed the higher levels. In addition, L shell spectra from titanium targets were obtained. Basic features of the K and L shell spectra are reproduced with computer simulations. The calculations include hydrodynamic simulation of the plasma expansion and collisional radiative calculations of the XUV emission.

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