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Review of Scientific Instruments / Volume 83 / Issue 2 / ARTICLES / Nuclear Physics, Fusion and Plasmas

Rev. Sci. Instrum. 83, 023504 (2012); http://dx.doi.org/10.1063/1.3683453 (6 pages)

Electric field-perturbation measurement of the interaction between two laser-induced plasmas

C. Sánchez-Aké1, F. Bredice2, and M. Villagrán-Muniz1

1CCADET, Universidad Nacional Autónoma de México (UNAM), A.P. 70-186, México D.F., C.P. 04510, México
2Centro de Investigaciones Ópticas, C.C. 3 C. P.1897 Gonnet, La Plata, Argentina

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(Received 1 June 2011; accepted 20 January 2012; published online 13 February 2012)

The interaction between two ns-laser-induced plasmas in air at the early-stage of expansion has been analyzed by using a method based on the direct measurement of the perturbation of an externally applied electric field. In this experimental method, the plasmas were produced by focusing two laser beams between the plates of a parallel-plane-charged capacitor. These plasmas produce a perturbation in the electric field of the capacitor which can be measured as a voltage change across a resistor connected to the ground plate. It was found that for delays shorter than 5 ns, the interaction between plasmas is mainly due to the interaction of the dipole-charge distribution of each plasma. For longer time delays, the shielding effect was dominant.

© 2012 American Institute of Physics

Article Outline

  1. INTRODUCTION
  2. EXPERIMENT
  3. RESULTS AND DISCUSSION
  4. CONCLUSION

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KEYWORDS, PACS, and IPC

Keywords

laser beams, plasma collision processes, plasma production by laser

PACS

  • 52.20.-j

    Elementary processes in plasmas

  • 52.50.Jm

    Plasma production and heating by laser beams (laser-foil, laser-cluster, etc.)

International Patent Classification (IPC)

  • H05H1/46

    Using applied electromagnetic fields, e.g. high frequency or microwave energy

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.3683453

PUBLICATION DATA

ISSN

0034-6748 (print)  
1089-7623 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

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