The fundamental physical mechanisms of laser ablation of a graphite: explosive bulk boiling and spinodal decomposition of a overheated liquid phase

Author

Kudryashov, S.I. ; Zorov, N.B.

Author_Institution

Dept. of Chem., Moscow State Univ., Russia

Volume

3

fYear

1999

fDate

Aug. 30 1999-Sept. 3 1999

Firstpage

628

Abstract

We have studied laser ablation of a graphite by photoacoustics (PA), electrostatic probing (EP) of a carbon plasma and time-of-flight mass spectroscopy (TOFMS). The target of a graphite was evaporated in air by a Q-switched second harmonic of a Nd:YAG laser. Bipolar and unipolar time resolved transient acoustic signals were recorded with a calibrated piezoceramic transducer placed on a back side of the target.

Keywords

boiling; electrostatics; evaporation; graphite; laser ablation; photoacoustic effect; spinodal decomposition; C; Nd:YAG laser; Q-switched second harmonic; YAG:Nd; YAl5O12:Nd; bipolar time resolved transient acoustic signals; calibrated piezoceramic transducer; carbon plasma; electrostatic probing; explosive bulk boiling; fundamental physical mechanisms; graphite; laser ablation; overheated liquid phase; physical mechanisms; spinodal decomposition; time-of-flight mass spectroscopy; unipolar time resolved transient acoustic signals; Acoustic pulses; Chemical lasers; Explosives; Laser ablation; Laser stability; Laser theory; Optical pulses; Plasma temperature; Pulse measurements; Thermodynamics;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics, 1999. CLEO/Pacific Rim '99. The Pacific Rim Conference on

Conference_Location

Seoul, South Korea

Print_ISBN

0-7803-5661-6

Type

conf

DOI

10.1109/CLEOPR.1999.817753

Filename

817753