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Cryogenic Liquid Jets for High Repetition Rate Discovery Science
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Supersonic gas jets for laser-plasma experiments.

K Schmid1, L Veisz

  • 1Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Strasse 1, 85748 Garching, Germany. karl.schmid@gmx.eu

The Review of Scientific Instruments
|June 7, 2012
PubMed
Summary
This summary is machine-generated.

We analyzed De Laval nozzles for gas jet generation. Scaling laws were developed for microscopic supersonic jets, considering boundary layer effects crucial for laser-plasma experiments.

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Area of Science:

  • Fluid dynamics
  • Plasma physics
  • Aerospace engineering

Background:

  • De Laval nozzles are critical for generating supersonic gas jets used in various scientific experiments.
  • Understanding gas jet characteristics like collimation and edge sharpness is vital for applications such as laser-plasma interactions.
  • Microscopic supersonic jets present unique challenges due to the dominance of boundary layer effects.

Purpose of the Study:

  • To analyze the scaling behavior of De Laval nozzle parameters for gas jet generation.
  • To derive scaling laws for jet collimation, edge sharpness, and Mach number relevant to laser-plasma experiments.
  • To investigate the formation of microscopic supersonic jets (diameters down to 150 μm) and the role of boundary layers.

Main Methods:

  • In-depth analysis of De Laval nozzle flow dynamics.
  • Development and application of scaling laws for jet parameters.
  • Inclusion of boundary layer effects in the flow analysis for microscopic jets.

Main Results:

  • Established scaling laws for key gas jet parameters generated by De Laval nozzles.
  • Demonstrated the significant impact of boundary layers on the formation of microscopic supersonic jets.
  • Provided a framework for optimizing De Laval nozzle design for specific experimental requirements.

Conclusions:

  • The study provides crucial insights into the scaling of De Laval nozzle performance for gas jet generation.
  • The derived scaling laws are valuable for designing experiments, particularly in laser-plasma physics.
  • Accurate modeling of microscopic supersonic jets requires the explicit consideration of boundary layer physics.