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Related Experiment Video

Updated: Aug 2, 2025

Building Langmuir Probes and Emissive Probes for Plasma Potential Measurements in Low Pressure, Low Temperature Plasmas

Building Langmuir Probes and Emissive Probes for Plasma Potential Measurements in Low Pressure, Low Temperature Plasmas

Published on: May 25, 2021

Plasma dynamics at the Schwinger limit and beyond.

Gert Brodin¹, Haidar Al-Naseri¹, Jens Zamanian¹

¹Department of Physics, Umeå University, SE-901 87 Umeå, Sweden.

Physical Review. E

|April 19, 2023

Summary

Investigating ultrastrong electric fields with initial plasma reveals quantum and classical interactions. Plasma density and temperature significantly influence pair creation dynamics, impacting strong field physics.

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Area of Science:

Quantum Electrodynamics
Plasma Physics
Strong Field Physics

Background:

Strong field physics studies often assume vacuum initial conditions or test particle dynamics.
The presence of an initial plasma introduces classical nonlinearities alongside quantum effects like Schwinger pair creation.

Purpose of the Study:

To investigate the interplay between classical and quantum mechanisms in ultrastrong electric fields.
To determine the effects of initial plasma density and temperature on plasma oscillation dynamics.
To compare these effects with competing mechanisms like radiation reaction and Breit-Wheeler pair production.

Main Methods:

Utilizing the Dirac-Heisenberg-Wigner formalism.
Simulating systems with initial plasma under ultrastrong electric fields.

Main Results:

Identified significant interplay between classical plasma nonlinearities and quantum relativistic mechanisms.
Quantified the influence of initial plasma density and temperature on oscillation dynamics.
Established comparisons with radiation reaction and Breit-Wheeler pair production.

Conclusions:

Initial plasma conditions critically modify quantum relativistic processes in strong fields.
The Dirac-Heisenberg-Wigner formalism provides a framework for studying these complex interactions.
Understanding these combined effects is crucial for advancing strong field physics research.