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Author(s): Payton Broaddus, Thilo Egenolf, Dylan S. Black, Melanie Murillo, Clarisse Woodahl, Yu Miao, Uwe Niedermayer, Robert L. Byer, Kenneth J. Leedle, and Olav Solgaard We demonstrate a silicon-based electron accelerator that uses laser optical near fields to both accelerate and confine electrons over extended distances. Two dielectric laser accelerator (DLA) designs were tested, each consisting of two arrays of silicon pillars pumped symmetrically...

Author(s): Daniel Grošelj, Hayk Hakobyan, Andrei M. Beloborodov, Lorenzo Sironi, and Alexander Philippov We report results from the first radiative particle-in-cell simulations of strong Alfvénic turbulence in plasmas of moderate optical depth. The simulations are performed in a local 3D periodic box and self-consistently follow the evolution of radiation as it interacts with a turbulent electron-posit… [Phys. Rev. Lett. 132, 085202] Published...

Author(s): Vincent David, Sébastien Galtier, and Romain Meyrand The breakdown of scale invariance in turbulent flows, known as multifractal scaling, is considered a cornerstone of turbulence. In solar wind turbulence, a monofractal behavior can be observed at electron scales, in contrast to larger scales where multifractality always prevails. Why scale invarianc… [Phys. Rev. Lett. 132, 085201] Published Wed Feb 21, 2024

Author(s): G. Brochard, C. Liu, X. Wei, W. Heidbrink, Z. Lin, N. Gorelenkov, C. Chrystal, X. Du, J. Bao, A. R. Polevoi, M. Schneider, S. H. Kim, S. D. Pinches, P. Liu, J. H. Nicolau, and H. Lütjens Gyrokinetic simulations of the fishbone instability in DIII-D tokamak plasmas find that self-generated zonal flows can dominate the nonlinear saturation by preventing coherent structures from persisting or drifting in the energetic particle phase space...

Author(s): T. Nechaeva et al. (AWAKE Collaboration) Experimental results show that hosing of a long particle bunch in plasma can be induced by wakefields driven by a short, misaligned preceding bunch. Hosing develops in the plane of misalignment, self-modulation in the perpendicular plane, at frequencies close to the plasma electron frequency, and ar… [Phys. Rev. Lett. 132, 075001] Published Tue Feb 13, 2024

Author(s): Shaojie Wang, Zihao Wang, and Tiannan Wu Understanding the self-organization of the most promising internal transport barrier in fusion plasmas needs a long-time nonlinear gyrokinetic global simulation. The neighboring equilibrium update method is proposed, which solves the secularity problem in a perturbative simulation and speeds up the … [Phys. Rev. Lett. 132, 065106] Published Fri Feb 09, 2024

Author(s): L. Bardóczi, A. Dudkovskaia, R. J. La Haye, J. D. Callen, C. Chrystal, and M. Podesta Detailed measurements of the plasma structure in and around magnetic islands caused by neoclassical tearing modes (NTM) in the DIII-D tokamak help constrain theoretical models predicting the NTM onset threshold scaling for ITER and other future tokamaks. [Phys. Rev. Lett. 132, 065107] Published Fri Feb 09, 2024