Open AccessCharacterization of ejected fused silica particles following surface breakdown with nanosecond pulses
Author(s) -
Rajesh N. Raman,
Selim Elhadj,
Raluca A. Negres,
Manyalibo J. Matthews,
Michael D. Feit,
Stavros G. Demos
Publication year - 2012
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.20.027708
Subject(s) - materials science , nanosecond , optics , plasma , thermal , ionization , laser , atomic physics , chemistry , physics , ion , quantum mechanics , meteorology , organic chemistry
The light emission produced near the surface of fused silica following laser-induced breakdown on the exit surface was spatially and spectrally resolved. This signal is in part generated by ejected particles while traveling outside the hot ionized region. The thermal emission produced by the particles can be separated from the plasma emission near the surface and its spectral characteristics provide information on the temperature of the particles after ejection from the surface. Assuming the emission is thermal in origin, data suggest an initial average temperature on the order of at least 0.5 eV.