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Title: Vertical oscillations of dust particles in a strongly magnetized plasma sheath induced by horizontal laser manipulation

Experimental studies are presented where dust particles are suspended in the lower sheath region of an argon rf discharge at a strong vertical magnetic field from B = 1.5 T up to 2.27 T. There the particles arranged in an ordered pattern imposed by the upper mesh electrode. It is observed that the particles jump to a new equilibrium position, where they exhibit self-excited vertical oscillations when illuminated by a horizontal laser beam. Furthermore, the dust motion is weakly damped during an upward jump and strongly damped during the return to the equilibrium after the laser is switched off. A model based on delayed charging is presented that can describe the observed behavior.
Authors:
 [1] ;  [1] ;  [2] ;  [2] ;  [2] ;  [2]
  1. Ernst-Moritz-Arndt-Univ. Greifswald, Greifswald (Germany)
  2. Auburn Univ., Auburn, AL (United States)
Publication Date:
Grant/Contract Number:
SC0010485
Type:
Accepted Manuscript
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 24; Journal Issue: 1; Journal ID: ISSN 1070-664X
Publisher:
American Institute of Physics (AIP)
Research Org:
Auburn Univ., Auburn, AL (United States). Physics Dept.
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
OSTI Identifier:
1465391
Alternate Identifier(s):
OSTI ID: 1361712

Puttscher, M., Melzer, A., Konopka, U., LeBlanc, S., Lynch, B., and Thomas, Jr., E.. Vertical oscillations of dust particles in a strongly magnetized plasma sheath induced by horizontal laser manipulation. United States: N. p., Web. doi:10.1063/1.4973231.
Puttscher, M., Melzer, A., Konopka, U., LeBlanc, S., Lynch, B., & Thomas, Jr., E.. Vertical oscillations of dust particles in a strongly magnetized plasma sheath induced by horizontal laser manipulation. United States. doi:10.1063/1.4973231.
Puttscher, M., Melzer, A., Konopka, U., LeBlanc, S., Lynch, B., and Thomas, Jr., E.. 2017. "Vertical oscillations of dust particles in a strongly magnetized plasma sheath induced by horizontal laser manipulation". United States. doi:10.1063/1.4973231. https://www.osti.gov/servlets/purl/1465391.
@article{osti_1465391,
title = {Vertical oscillations of dust particles in a strongly magnetized plasma sheath induced by horizontal laser manipulation},
author = {Puttscher, M. and Melzer, A. and Konopka, U. and LeBlanc, S. and Lynch, B. and Thomas, Jr., E.},
abstractNote = {Experimental studies are presented where dust particles are suspended in the lower sheath region of an argon rf discharge at a strong vertical magnetic field from B = 1.5 T up to 2.27 T. There the particles arranged in an ordered pattern imposed by the upper mesh electrode. It is observed that the particles jump to a new equilibrium position, where they exhibit self-excited vertical oscillations when illuminated by a horizontal laser beam. Furthermore, the dust motion is weakly damped during an upward jump and strongly damped during the return to the equilibrium after the laser is switched off. A model based on delayed charging is presented that can describe the observed behavior.},
doi = {10.1063/1.4973231},
journal = {Physics of Plasmas},
number = 1,
volume = 24,
place = {United States},
year = {2017},
month = {1}
}