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10.1117/12.8224462315th International School on Quantum Electronics; Laser Physics and Applications4172017027702709 (8 pp.)Proc.SPIE2008SESE779972772791The formation of nanoparticles at ultrashort laser ablation of gold in vacuum is investigated theoretically. The analyses of the nanoparticle formation mechanisms and their initial evolution are performed on the basis of molecular dynamics (MD) simulation. The study is carried out for Au target irradiated by laser pulses of 100 fs duration at laser wavelengths of 800 nm. The evolution of the ablation process is monitored for time interval of few hundreds of picoseconds. The size distribution of the nanoparticles and their velocity distribution are obtained as a function of the laser fluence. The results indicate that the nanoparticles are formed in the stage of superheated material decomposition and phase explosion and fragmentation are the main mechanisms leading to their formation. The results for velocity and size distributions are compared to the available experimental ones and good agreement is observed.http://spiedigitallibrary.aip.org/browse/vol_level.jsp?type=volrange&scode=7000+-+7099Formation and initial evolution of nanoparticles at ultrashort laser ablation of gold: molecular dynamics simulation会议论文EnglishNedyalkov, N.N.; Imamova, S.; Atanasov, P.; Obara, M.6679 INSPEC:10448132
外文题目: Formation and initial evolution of nanoparticles at ultrashort laser ablation of gold: molecular dynamics simulation
作者: Nedyalkov, N.N.; Imamova, S.; Atanasov, P.; Obara, M.
刊名: Proc.SPIE
年: 2008 卷: 7027 页: --702709 (8 pp.)
会议名称: 15th International School on Quantum Electronics; Laser Physics and Applications
英文摘要:
文献类型: 会议论文
正文语种: English
DOI: 10.1117/12.822446
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