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Updated: May 3, 2026

Visualization of High Speed Liquid Jet Impaction on a Moving Surface

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Published on: April 17, 2015

Structure and dynamics of colliding plasma jets.

C K Li¹, D D Ryutov², S X Hu³

¹Plasma Science and Fusion Center, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.

Physical Review Letters

|January 31, 2014

Summary

Proton radiographs reveal structures in colliding plasma jets. Magnetic fields are "frozen in" and advected by electron flow, matching analytic models.

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Three-dimensional Particle Tracking Velocimetry for Turbulence Applications: Case of a Jet Flow

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Area of Science:

Plasma physics
Astrophysical fluid dynamics
High-energy density physics

Background:

Laser-generated plasma jets are crucial for understanding astrophysical phenomena.
Colliding plasma jets exhibit complex structures and dynamics.

Purpose of the Study:

To investigate the structures and dynamics of colliding plasma jets using monoenergetic-proton radiography.
To compare experimental observations with 2D hydrodynamic simulations and analytic models.

Main Methods:

Monoenergetic-proton radiography of laser-generated, high-Mach-number plasma jets.
2D hydrodynamic simulations of multistream plasma jets.
Analytic treatment of electron flow and magnetic field advection.

Main Results:

Observed flow structures in noncollinear jet collisions align with analytic predictions.
Spontaneous azimuthal magnetic fields are generated by the Biermann battery effect.
Magnetic fields are "frozen in" the plasma (Re(M)∼5×10(4)) and advected by electron flow.

Conclusions:

Proton radiography provides novel insights into colliding plasma jet dynamics.
The Biermann battery effect and magnetic field advection play significant roles.
Experimental results validate theoretical and simulation models.