Physics of Plasmas, Volume 30, Issue 3, March 2023. Many scientific problems can be formulated as sparse regression, i.e., regression onto a set of parameters when there is a desire or expectation that some of the parameters are exactly zero or do not …
Physics of Plasmas, Volume 30, Issue 3, March 2023. It is well-known that an ordinary high frequency electromagnetic (EM) wave radiated into the ionosphere at the Spitze angle is totally transformed at the reflection height (z0) into the Z-mode. This m…
Physics of Plasmas, Volume 30, Issue 3, March 2023. The Weibel instability is investigated using relativistic intense short laser pulses. A relativistic short laser pulse can generate a sub-relativistic high-density collisionless plasma. By irradiating…
Physics of Plasmas, Volume 30, Issue 3, March 2023. In the growing field of dusty afterglow plasma physics, the key parameter is the residual charge of dust particles. However, the particle (de)-charging process in afterglow plasmas is still far from f…
Physics of Plasmas, Volume 30, Issue 3, March 2023. An all-optical approach to edge-enhanced proton radiography is realized by using a relativistic vortex laser irradiating on nanometer-thick foil. In the proof-of-principle experiments, the hollow prot…
Physics of Plasmas, Volume 30, Issue 3, March 2023. Electron cyclotron drift instability (ECDI) and ion–ion two stream instability (IITSI) are both kinetic instabilities that can be present in low-temperature, partially magnetized plasmas. The coupling…
Physics of Plasmas, Volume 30, Issue 3, March 2023. Electrostatic solitary waves with negative potential (ion holes) are analyzed theoretically using a generalization of the treatment recently developed for slow electron holes. It is shown that an ofte…
Physics of Plasmas, Volume 30, Issue 3, March 2023. Impurities degrade tokamak plasma confinement by causing energy loss, diluting fuel concentration, and even terminating discharge in some extreme cases. Previously, the suppression effects of impurity…
Physics of Plasmas, Volume 30, Issue 3, March 2023. Double-layer targets composed of near-critical-density carbon nanotube foams (CNFs) and solid foils have shown their advantages in laser-driven ion acceleration under high relativistic intensity. Here…
Physics of Plasmas, Volume 30, Issue 3, March 2023. Disruption prediction and avoidance is a critical need for next-step tokamaks, such as ITER. Disruption Event Characterization and Forecasting (DECAF) research fully automates analysis of tokamak data…