Published in The Astrophysical Journal
We perform 3D3V hybrid-Vlasov simulations of turbulence with quasi-isotropic, compressible injection near ion scales to mimic the Earth’s magnetosheath plasma, and investigate the novel electron-only reconnection, recently observed by NASA’s Magnetospheric Multiscale mission, and its impact on ion heating. Retaining electron inertia in the generali...
Abstract Gyrokinetic and kinetic-MHD simulations are performed for the fishbone instability in the DIII-D discharge #178631, chosen for validation of first-principles simulations to predict the energetic particle (EP) transport in an ITER prefusion baseline scenario. Fishbone modes are found to generate zonal flows, which dominate the fishbone satu...
• Introduction about the WEST Tokamak• Radiation emission in Tokamaks and Tungsten• How to measure radiation and get local emissivity?• 6 different techniques to reconstruct W concentration• Conclusions and perspectives
We introduce a second-order gyro-averaged extension to a guiding-center transport model for test particles subject to an $\mathbf{E}\times\mathbf{B}$ drift in a tokamak. Using this approximation, we numerically investigate the influence of finite Larmor radius effects on the chaotic transport and the formation of transport barriers. For non-monoton...
The goal of this research is to better understand how cold air plasma interacts with bacteria in water by examining the impact of UVA radiation as a supporting factor on the production of specific RONS in gas and water, as well as the subsequent effects on bacteria viability. The investigation specifically examined RONS produced by transient spark ...
International audience
The goal of this research is to better understand how cold air plasma interacts with liquid water, and the impact of UVA radiation as a supporting factor on the production of specific RONS in water and bacterial treatment. Our investigations specifically examined RONS produced by transient spark (TS) discharge plasma combined with UV radiation in w...
We present a comparative study of copper film growth with a constant energy neutral beam, thermal evaporation, dc magnetron sputtering, high-power impulse magnetron sputtering (HiP-IMS), and bipolar HiPIMS, through molecular dynamics simulations. Experimentally determined energy distribution functions were utilized to model the deposition processes...
The Earth magnetopause, when sufficiently plane and stationary at a local scale, can be considered as a "quasi-tangential" discontinuity, since the normal component of the magnetic field B n is typically very small but not zero. Contrary to observations, the "Classic Theory of Discontinuities" (CTD) predicts that rotational and compressional jumps ...
We report on attosecond-scale control of high-harmonic and electron emission from plasma mirrors driven by relativistic-intensity near-single-cycle lightwaves at kHz repetition rate. By controlling the waveform of the intense light transient, we reproducibly form a sub-cycle temporal intensity gate at the plasma mirror surface, leading to the obser...
