Izvorni znanstveni članak
Laser-produced plasmas on Mg, Al and Si surfaces
Sandra Plesić
; Department of Applied Physics, Faculty of Electrical Engineering and Computing, University of Zagreb, Unska 3, 10000 Zagreb, Croatia
Željko Andreić
; Faculty of Mining, Geology and Petroleum Engineering, University in Zagreb, Pierottijeva 6, 10000 Zagreb, Croatia
Sažetak
Experimental investigations of laser-produced plasmas of Mg, Al and Si are described in this work. Plasmas were produced by nanosecond (6 ns) nitrogen-laser pulses (λ = 337.1 nm) with maximal energy density of about 1.1 J/cm2 and were studied by UV-VIS spectroscopy. Electron densities of the order of 1018 cm−3 and electron temperatures of about 1.5 eV in the produced plasmas have been found. Numerical modelling of target heating gives 4 – 5 times higher electron temperatures than determined in experiments. Significant change of features of laser-produced plasmas on the three neighbouring elements has not been found. We show that optical depth of the materials is the main parameter for plasma production.
Ključne riječi
laser-produced plasma; Mg; Al and Si metal surfaces
Hrčak ID:
301985
URI
Datum izdavanja:
1.3.2005.
Posjeta: 153 *