Plasma-assisted laser ablation of tungsten: Reduction in ablation power threshold due to bursting of holes/bubbles

Plasma-assisted laser ablation of tungsten: Reduction in ablation power threshold due to bursting of holes/bubbles

Nanosecond laser ablation of tungsten (W) exposed to helium plasma is investigated using optical emission spectroscopy. Submicrometer-sized holes/bubbles are formed on the surface of W when it was exposed to the helium plasma at a sufficiently high temperature (≳1500–1600K). The emissions from a vir...

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Veröffentlicht in:Applied physics letters 2007-12, Vol.91 (26)
Hauptverfasser: Kajita, Shin, Ohno, Noriyasu, Takamura, Shuichi, Sakaguchi, Wataru, Nishijima, Dai
Format: Artikel
Sprache:eng
Schlagworte:
ABLATION
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
EMISSION SPECTROSCOPY
HELIUM
LASERS
MATERIALS SCIENCE
PLASMA
TEMPERATURE DEPENDENCE
TEMPERATURE RANGE 1000-4000 K
TUNGSTEN
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Zusammenfassung:Nanosecond laser ablation of tungsten (W) exposed to helium plasma is investigated using optical emission spectroscopy. Submicrometer-sized holes/bubbles are formed on the surface of W when it was exposed to the helium plasma at a sufficiently high temperature (≳1500–1600K). The emissions from a virgin W (before the helium plasma irradiation) cannot be detected when the fluence is
ISSN:0003-6951
1077-3118
DOI:10.1063/1.2824873