Superluminal Plasma Mirror: A Novel Platform for Quantum Light Generation and Time Reflection
The oscillating plasma-vacuum interface induced by an ultra-intense, ultra-short laser pulse can function as a "spacetime mirror" that exhibits superluminal behavior, enabling the generation of quantum light through vacuum squeezing and the observation of time reflection and refraction.
Design and First Tests of the Trapped Electrons Experiment T-REX to Understand Electron Cloud Formation in Gyrotron Magnetron Injection Guns
The TRapped Electrons eXperiment (T-REX) was developed to study the formation and dynamics of electron clouds in gyrotron magnetron injection gun (MIG) designs, which can lead to operational instabilities and failures.
Modulational Instability of Geodesic Acoustic Mode Packets in Tokamak Plasmas
Isolated, undamped geodesic acoustic mode (GAM) packets in tokamak plasmas are susceptible to modulational instability, which can lead to the growth of sinusoidal perturbations in the GAM envelope and the generation of higher spectral components.
Nonlinear Propagation of Ion-Acoustic Solitons in Relativistic Fermi Plasmas at Finite Temperature
The study investigates the existence and properties of ion-acoustic solitons in a relativistic Fermi plasma at finite temperature, focusing on the intermediate regime where the particle's thermal energy and rest mass energy are comparable, and the normalized chemical energy is positive and larger than the thermal energy.
長腿型 Super-X 分流器在 MAST-U 上的 L 模式放電中電子密度剖面的演化
在 MAST-U 上的 L 模式放電中,隨著分流器腿長度和總通量擴張的增加,沿分離層的功率和動量損失顯著增加,導致靶上電子密度和粒子通量降低,突出了 Super-X 分流器的增強排出性能。隨著分流器分離狀態的演化,電子密度剖面在電離前沿下游峰值,這歸因於中性粒子拖曳減小等離子體流速並增加電子密度的影響。在達到足夠低的靶溫度(Te < 0.3 eV)時,電子-離子複合損失開始主導拖曳效應,導致密度前沿從靶上分離。與解釋性 SOLPS-ITER 模擬的比較顯示,在沿和橫跨分離層的電子密度剖面上總體上有合理的一致性,儘管在 Super-X 密度上升的早期階段實驗推斷的非單調剖面未能很好地再現。
2D Electron Density Profile Evolution During Detachment in Super-X Divertor L-Mode Discharges on MAST-U
The electron density profiles in the MAST-U divertor show significant changes as the divertor detachment state evolves, with the density peaking downstream of the ionization front due to the effect of neutral drag reducing the plasma flow and increasing the electron density. The Super-X divertor configuration exhibits lower target electron density and particle flux compared to the Elongated divertor, highlighting its improved exhaust performance.
The Impact of Non-Maxwellian Electron Distributions on Impurity Reaction Rates in Tokamak Scrape-Off Layer Plasmas
Non-local parallel electron transport can lead to non-Maxwellian electron distributions, particularly near divertor targets, which can significantly modify ionization balance and radiative power loss rates for fusion-relevant impurities.
ASDEX Upgrade에서 SPI 유도 붕괴의 방사 에너지 분율
ASDEX Upgrade에서 SPI 유도 붕괴 시 방사 에너지 분율은 주입된 네온 원자 수에 따라 달라지며, 파편 크기 및 속도 분포에 따른 영향도 관찰되었다.
Optimizing Disruption Mitigation via Shattered Pellet Injection: Insights into Radiated Energy Fraction at ASDEX Upgrade
The radiated energy fraction during SPI-induced disruptions at ASDEX Upgrade can be optimized by tailoring the pellet composition and shatter head geometry to maximize the radiation while minimizing thermal and mechanical loads on the tokamak.
Extreme Faraday Effect Splits Linearly-Polarized Nanoshots into Circularly-Polarized Pairs within Crab Pulsar's Giant Pulses
The occurrence of nanoshot pairs with left-hand and right-hand circular polarization within a giant pulse emitted by the Crab pulsar arises from the fragmentation of a linearly-polarized nanoshot along the magnetic field lines under the extreme Faraday effect, leveraging highly-asymmetrical pair plasma and the ultra-intense field of nanoshots.
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