Enhanced filament ablation of metals based on plasma grating in air

Journal Article · Tue Sep 15 00:00:00 EDT 2015 · AIP Advances

DOI:https://doi.org/10.1063/1.4932130· OSTI ID:22492380

Wang, Di; Liu, Fengjiang; Ding, Liangen ^[1]; Yuan, Shuai; Zeng, Heping ^[1]

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1. State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200062 (China)

We demonstrate efficient ablation of metals with filamentary plasma grating generated by two intense blue femtosecond filaments and a third focused infrared pulse. This scheme leads to significant promotion of ablation efficiency on metal targets in air in comparison with single infrared or blue filament with equal pulse energy. The reason is that the blue plasma grating firstly provides stronger intensity and a higher density of background electrons, then the delayed infrared pulse accelerates local electrons inside the plasma grating. These two processes finally results in robustly increased electron density and highly ionized metallic atoms.

• OSTI ID: 22492380
• Journal Information: AIP Advances, Vol. 5, Issue 9; Other Information: (c) 2015 Author(s); Country of input: International Atomic Energy Agency (IAEA); ISSN 2158-3226
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ABLATION
AIR
ATOMS
COMPARATIVE EVALUATIONS
EFFICIENCY
ELECTRON DENSITY
ELECTRONS
FILAMENTS
GRATINGS
LEAD
MULTICHARGED IONS
PLASMA
PLASMA FILAMENT