Nonthermal Particle Acceleration by Magnetic Pumping in Pulsating Plasmas

Researchers have developed a "pulsating box" simulation setup to study particle acceleration in high-beta plasmas subjected to compression and expansion cycles. The simulations demonstrate that magnetic pumping effectively accelerates particles, leading to nonthermal energy distributions with power-law tails.

The numerical findings align closely with a newly derived generalized maximum entropy model. This model establishes a relationship between the power-law index of the particle energy distributions and the injected energy.

This research has implications for understanding the mechanisms behind high-energy particle generation in both terrestrial and astrophysical plasma environments.