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Proceedings Article

Time-of-flight characterization of ZnO laser-generated plasma

[+] Author Affiliations
A. M. Mezzasalma, G. Mondio

Univ. degli Studi di Messina (Italy) and INFN (Italy)

L. Torrisi, F. Caridi

INFN (Italy) and Univ. degli Studi di Messina (Italy)

Proc. SPIE 7996, Fundamentals of Laser-Assisted Micro- and Nanotechnologies 2010, 79960W (February 28, 2011); doi:10.1117/12.888781
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From Conference Volume 7996

  • Fundamentals of Laser-Assisted Micro- and Nanotechnologies 2010
  • Vadim P. Veiko; Tigran A. Vartanyan
  • St. Petersburg, Russian Federation | July 05, 2010

abstract

A study of the laser ablation of a ZnO target has been carried out in vacuum, by using a Nd:Yag laser with a pulse duration of 3 ns, a wavelength of 532 nm and a maximum pulse energy of 150 mJ. The measurements of ablation yields, crater profiles and fast CCD plasma imaging allowed the evaluation of the plasma density. Time-of-flight (TOF) measurements have been also utilized to monitor the ion emission by using a special ion collector placed along the normal to the target surface. Coulomb-Boltzmann-shifted ion energy distributions have been obtained depending on the ions charge states. The plasma temperature was evaluated by such ion energy distributions of the experimental data. A special attention has been devoted to the ion acceleration processes due to the high electric fields generated inside the non-equilibrium plasma. The characterization of the latter and the deposition of ZnO thin films are correlated and discussed.

© (2010) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

A. M. Mezzasalma ; G. Mondio ; L. Torrisi and F. Caridi
"Time-of-flight characterization of ZnO laser-generated plasma", Proc. SPIE 7996, Fundamentals of Laser-Assisted Micro- and Nanotechnologies 2010, 79960W (February 28, 2011); doi:10.1117/12.888781; http://dx.doi.org/10.1117/12.888781


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