What question did this study set out to answer?

To resolve the dynamic transition from collisional hydrodynamics to nonlocal transport and characterize electron and ion dynamics during laser-produced plasma expansion into vacuum.

May 25, 2026Fundamental Plasma PhysicsOpen Access

Three-dimensional hybrid PIC–fluid simulation of electron and ion dynamics in laser-produced plasma plumes

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Authors

NANawal M. Almalky

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Implication

Computational simulation reveals double-layer ion acceleration and enhanced cooling during 3D laser plasma expansion, highlighting geometric impacts on kinetic transport transitions.

Key Points

To resolve the dynamic transition from collisional hydrodynamics to nonlocal transport and characterize electron and ion dynamics during laser-produced plasma expansion into vacuum.
Simulated plasma dynamics using a fully three-dimensional hybrid kinetic–fluid model at near-solid initial density on nanosecond timescales.
Introduced a time-dependent expansion–collisionality parameter, χ(t), to monitor the transition to nonlocal electron transport.
Benchmarked simulated plasma expansion against experimental interferometry and time-of-flight diagnostic measurements.
Reaching χ ≈ 1 marks the onset of nonlocal electron transport, triggering electron cooling rate shifts and creating an electrostatic double layer that drives ambipolar ion acceleration up to ~120 eV.
Three-dimensional expansion increases adiabatic cooling by 20% to 30% compared with one-dimensional predictions and advances the transport transition timing.
Simulated plume dynamics matched experimental interferometry and time-of-flight diagnostics within experimental uncertainty (normalized RMSE < 10%).

Cite This Study

Nawal M. Almalky (2026) studied this question.

synapsesocial.com/papers/6aa8fc5ae4e7b17765d919be https://doi.org/10.1016/j.fpp.2026.100125

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Implication

Computational simulation reveals double-layer ion acceleration and enhanced cooling during 3D laser plasma expansion, highlighting geometric impacts on kinetic transport transitions.

Three-dimensional hybrid PIC–fluid simulation of electron and ion dynamics in laser-produced plasma plumes

Discussion

Member takes

Implication

Key Points

Cite This Study

Three-dimensional hybrid PIC–fluid simulation of electron and ion dynamics in laser-produced plasma plumes

Discussion

Member takes

Implication

Key Points

Cite This Study

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