Title :
Investigation of laser-produced high-Z plasma soft X-ray sources
Author :
Otsuka, Takayuki ; Duune, Padraig ; O´Sullivan, Gerry ; Higashiguchi, Takeshi ; Yugami, Noboru
Author_Institution :
Sch. of Phys., Univ. Coll. Dublin, Dublin, Ireland
Abstract :
We have investigated laser-produced plasmas (LPP) from high-Z elements as sources of soft X-rays. Emission spectra from several high Z LPPs are observed and the dependence of peak wavelength of unresolved transition array (UTA) emission on atomic number is reviewed. We observed that bismuth (Bi) has strong UTA emission centered at 4 nm, inside of the water window. The effect of laser power density and viewing angle on the spectral emission of Bi LPPs is studied. We also report results on the effect of dual pulse irradiation experiment and emission spectra from a low density Bi foam target.
Keywords :
Z pinch; bismuth; foams; plasma X-ray sources; plasma density; plasma diagnostics; plasma production by laser; Bi; UTA emission; atomic number; dual pulse irradiation; emission spectra; high-Z elements; laser power density; laser-produced high-Z plasma soft X-ray sources; low density bismuth foam target; unresolved transition array emission; viewing angle; water window; Bismuth; Density measurement; Plasmas; Radiation effects; Ultraviolet sources; X-ray lasers; extreme ultraviolet (EUV); laser-produced plasma (LPP); soft X-ray (SXR); unresolved transition array (UTA); water window;
Conference_Titel :
Pulsed Power Conference (PPC), 2013 19th IEEE
Conference_Location :
San Francisco, CA
DOI :
10.1109/PPC.2013.6627536
