Spectral broadening from turbulence in multiscale lower hybrid current drive simulationsThe scattering of lower hybrid (LH) waves due to scrape-off layer (SOL) filaments is investigated. It is revealed that scattering can account for the LH spectral gap without any ad hoc modification…Bodhi Biswas, Paul Bonoli, Abhay Ram et al.·Oct 5, 2022SaveLearn
Applications of object detection networks at high-power laser systems and experimentsThe recent advent of deep artificial neural networks has resulted in a dramatic increase in performance for object classification and detection. While pre-trained with everyday objects, we find that…Jinpu Lin, Florian Haberstroh, Stefan Karsch et al.·Oct 5, 2022SaveLearn
Interpretation of Stark broadening measurements on a spatially integrated plasma spectral lineIn thermal plasma spectroscopy, Stark broadening measurement of hydrogen spectral lines is considered to be a good and reliable measurement for electron density. Unlike intensity based measurements,…Julien Thouin, Malyk Benmouffok, Pierre Freton et al.·Oct 5, 2022SaveLearn
On the interaction between the island divertor heat fluxes, the scrape-off layer radial electric field and the edge turbulence in Wendelstein 7-X plasmasThe formation of the radial electric field, E r in the SOL has been experimentally studied for attached divertor conditions in stellarator W7-X. The main objective of this study is to test…E. Maragkoudakis, D. Carralero, T. Estrada et al.·Oct 5, 2022SaveLearn
Evolution of Ion Wake Characteristics with Experimental ConditionsTwo-dimensional microparticle crystals can be formed in the sheath of a gas discharge plasma. Ions from the bulk plasma are accelerated in the sheath electric field, flowing past the grains to create…Rahul Banka, Katrina Vermillion, Lorin Matthews et al.·Oct 4, 2022SaveLearn
First-principles based plasma profile predictions for optimized stellaratorsIn the present Letter, first-of-its-kind computer simulations predicting plasma profiles for modern optimized stellarators -- while self-consistently retaining neoclassical transport, turbulent…A. Bañón Navarro, A. Di Siena, J. L. Velasco et al.·Oct 4, 2022SaveLearn
Bidirectional flow of two-dimensional dusty plasma under asymmetric periodic substrates driven by unbiased external excitationsCollective transport properties of a one-dimensional asymmetric periodic substrate (1DAPS) modulated two-dimensional dusty plasma (2DDP) driven by an unbiased sinusoidal excitation force are…Wei Li, D. Huang, C. Reichhardt et al.·Oct 4, 2022SaveLearn
Opacity of relativistically underdense plasmas for extremely intense laser pulsesIt is generally believed that relativistically underdense plasma is transparent for intense laser radiation. However, particle-in-cell simulations reveal abnormal laser field absorption above the…M. A. Serebryakov, A. S. Samsonov, E. N. Nerush et al.·Oct 4, 2022SaveLearn
Particle momentum variation under interaction with wavepackets of finite spatial widthThe single and collective particle interaction with spatially localized wavepackets is analytically and numerically studied. The role of the finite spatial width of the wavepacket on the momentum and…Theodoros Bournelis, Yannis Kominis·Oct 3, 2022SaveLearn
Raman spectroscopic characterization of crater walls formed upon single-shot high energy femtosecond laser irradiation of dimethacrylate polymer doped with plasmonic gold nanorodsThe bonding configuration of the crater walls formed in urethane dimethacrylate-based polymer doped with plasmonic gold nanorods upon irradiation with a single-shot high-energy femtosecond laser…István Rigó, Judit Kámán, Ágnes Nagyné Szokol et al.·Oct 2, 2022SaveLearn
Wave propagation in rotating magnetised plasmasWave propagation properties in a medium are fundamentally affected when this medium is moving instead of at rest. In isotropic dielectric media rotation has two noteworthy contributions: one is a…Renaud Gueroult, Jean-Marcel Rax, Nathaniel J. Fisch·Sep 30, 2022SaveLearn
Validating and optimising mismatch tolerance of Doppler backscattering measurements with the beam modelWe use the beam model of Doppler backscattering (DBS), which was previously derived from beam tracing and the reciprocity theorem, to shed light on mismatch attenuation. This attenuation of the…Valerian H. Hall-Chen, Julius Damba, Felix I. Parra et al.·Sep 30, 2022SaveLearn
Single-Shot Electron Radiography Using a Laser-Plasma AcceleratorContact and projection electron radiography of static targets was demonstrated using a laser plasma accelerator driven by a kilojoule, picosecond class laser as a source of relativistic electrons…G. Bruhaug, M. S. Freeman, H. G. Rinderknecht et al.·Sep 29, 2022SaveLearn
Exploring the parameter space of MagLIF implosions using similarity scaling. III. Rise-time scalingMagnetized Liner Inertial Fusion (MagLIF) is a z-pinch magneto-inertial-fusion (MIF) concept studied on the Z Machine at Sandia National Laboratories. Two important metrics characterizing current…D. E. Ruiz, P. F. Schmit, M. R. Weis et al.·Sep 29, 2022SaveLearn
Exploring the parameter space of MagLIF implosions using similarity scaling. II. Current scalingMagnetized Liner Inertial Fusion (MagLIF) is a magneto-inertial-fusion (MIF) concept, which is presently being studied on the Z Pulsed Power Facility. The MagLIF platform has achieved interesting…D. E. Ruiz, P. F. Schmit, D. A. Yager-Elorriaga et al.·Sep 29, 2022SaveLearn
Exploring the parameter space of MagLIF implosions using similarity scaling. I. Theoretical frameworkMagneto-inertial fusion (MIF) concepts, such as the Magnetized Liner Inertial Fusion (MagLIF) platform [M. R. Gomez et al., Phys. Rev. Lett. 113, 155003 (2014)], constitute a promising path for…D. E. Ruiz, P. F. Schmit, D. A. Yager-Elorriaga et al.·Sep 29, 2022SaveLearn
Effect of temperature anisotropy on the dynamics of geodesic acoustic modesIn this work, we revisit the linear gyro-kinetic theory of geodesic acoustic modes (GAMs) and derive a general dispersion relation for an arbitrary equilibrium distribution function of ions. A…J. N. Sama, A. Biancalani, A. Bottino et al.·Sep 29, 2022SaveLearn
Evolution of positive streamers in air over non-planar dielectrics: Experiments and simulationsWe study positive streamers in air propagating along polycarbonate dielectric plates with and without small-scale surface profiles. The streamer development was documented using light-sensitive…Hans Kristian Meyer, Robert Marskar, Frank Mauseth·Sep 29, 2022SaveLearn
Experimental Measurement of Overlapped SheathsDue to the complicated environment of the plasma sheath, it is difficult to experimentally measure plasma characteristics in the narrow geometry where sheaths from opposite boundaries overlap. Since…Mudi Chen, Michael Dropmann, Ke Qiao et al.·Sep 29, 2022SaveLearn
Probing strong-field QED in beam-plasma collisionsOngoing progress in laser and accelerator technology opens new possibilities in high-field science, notably to investigate the largely unexplored strong-field quantum electrodynamics (SFQED) regime…A. Matheron, P. San Miguel Claveria, R. Ariniello et al.·Sep 28, 2022SaveLearn
Analytical Solution for Space-Charge Waves in a Two-Stream Cylindrical Electron BeamWe present an analytical method to compute the wavenumbers and electric fields of the space-charge-wave eigenmodes supported by a two-stream electron beam, consisting of a solid inner cylindrical…Tarek Mealy, Robert Marosi, Kasra Rouhi et al.·Sep 28, 2022SaveLearn
Dynamical commensuration effect in a two-dimensional Yukawa solid modulated by periodic substratesTransverse depinning dynamics of a periodic-square-substrate modulated two-dimensional dusty plasma solid driven by a constant force in the longitudinal direction are investigated using Langevin…Wenqi Zhu, C. Reichhardt, C. J. O. Reichhardt et al.·Sep 28, 2022SaveLearn
Ion and Electron Acoustic Bursts during Anti-Parallel Magnetic Reconnection Driven by LasersMagnetic reconnection converts magnetic energy into thermal and kinetic energy in plasma. Among numerous candidate mechanisms, ion acoustic instabilities driven by the relative drift between ions and…Shu Zhang, Abraham Chien, Lan Gao et al.·Sep 26, 2022SaveLearn
Nontrivial low-frequency topological waves at the boundary of a magnetized plasmaThe topological properties of a magnetized cold gaseous plasma have recently been explored and the existence of topologically protected edge states has been established. These studies are limited to…Roopendra Singh Rajawat, Tianhong Wang, Gennady Shvets·Sep 26, 2022SaveLearn
Enhanced strong-coupling stimulated Brillouin amplification assisted by Raman amplificationHigher intensity of strong-coupling stimulated Brillouin scattering (SC-SBS) amplification is achieved by supplementary Raman amplification. In the new scheme, a Raman pump laser first amplifies the…Y. Chen, C. Y. Zheng, Z. J. Liu et al.·Sep 26, 2022SaveLearn