Grams, Michael and Stasicki, Boleslaw and Toennies, J. Peter (2005) Production and characterization of micron-sized filaments of solid argon. Scientific Instruments, Vol. 76 (12/123904), 123904-1-123904-9. DOI: 10.1063/1.2135277. ISSN 00346748.
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A continuous 50-µm-diam filament of solid argon is produced in a moderate vacuum (4.2×10<sup>–3</sup> mbar) by cooling argon gas to 70–90 K over the last 8 mm of a long fused silica capillary. Prior to formation of the straight filament the jet shows different stages characterized by spraying, snowballing, or spiraling filaments as documented by charge-coupled device (CCD) camera microscope pictures. Consecutive CCD pictures are used to measure the filament velocities, which increase with the driving gas pressure P<sub>0</sub> up to about 4.0 cm/s at P<sub>0</sub> = 400 bars with an intermediate peak at about 80 bars. This technique may find applications for producing wall-less cryogenic matrices, targets for laser plasma sources of extreme UV and soft-x-ray sources, plasma implosion experiments, or H<sub>2</sub> pellets for injection into fusion reactors.
|Additional Information:||LIDO-Berichtsjahr=2006, published online 21 December 2005|
|Title:||Production and characterization of micron-sized filaments of solid argon|
|Journal or Publication Title:||Scientific Instruments|
|In ISI Web of Science:||Yes|
|Keywords:||plasma implosion experiments, camera microscope pictures|
|HGF - Research field:||Aeronautics, Space and Transport (old)|
|HGF - Program:||Aeronautics|
|HGF - Program Themes:||Aircraft Research|
|DLR - Research area:||Aeronautics|
|DLR - Program:||L AR - Aircraft Research|
|DLR - Research theme (Project):||L - Flight Physics|
|Institutes and Institutions:||Institute of Aerodynamics and Flow Technology > Experimental Methods|
|Deposited By:||Ilka Micknaus|
|Deposited On:||29 Jun 2006|
|Last Modified:||27 Apr 2009 04:56|
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