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Applied Physics Letters / Volume 97 / Issue 5 / PLASMAS AND ELECTRICAL DISCHARGES

Appl. Phys. Lett. 97, 051503 (2010); http://dx.doi.org/10.1063/1.3477950 (3 pages)

Comatic aberration-induced wavy vortex in gas

Hong-Yu Chu, Shang-Bin Lin, and Chang-Rong Ko

Department of Physics, National Chung Cheng University, Chia-Yi 62102, Taiwan

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(Received 10 May 2010; accepted 20 July 2010; published online 5 August 2010)

We investigate the evolution of laser-induced wavy vortex at 460 torr nitrogen gas environment. We show that Rayleigh–Taylor instability and Kelvin–Helmholtz instability are not the causes of the growth of the wavy vortex. Normal diffusion inducing the growth of the ripple-type perturbation is identified. The ratio of the perturbation amplitude to the wavelength of perturbation is found with 0.16. Through a quick estimation, measurements show the consistent scaling relations. We further show that the comatic aberration is suspected to be responsible for the asymmetric rarefaction wave, which triggers Kelvin–Helmholtz instability and induces the wavy vortex.

© 2010 American Institute of Physics

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KEYWORDS and PACS

Keywords

diffusion, Rayleigh-Taylor instability, vortices

PACS

  • 47.20.Ma

    Interfacial instabilities (e.g., Rayleigh-Taylor)

  • 47.32.-y

    Vortex dynamics; rotating fluids

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.3477950

PUBLICATION DATA

ISSN

0003-6951 (print)  
1077-3118 (online)

Publisher

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

For access to fully linked references, you need to log in.
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