米エネルギー省（DOE）が後援した新たな報告書は、核融合システム内のプラズマを測定する先進診断ツールへの大規模投資を求めている。この文書は、70人の専門家が参加した2024年のワークショップから生まれたもので、商用核融合発電の進展に向けた優先事項を特定している。また、これらのツールが核融合反応を維持し、米国のプラズマ科学におけるリーダーシップを支える役割を強調している。
核融合エネルギーはクリーンな電源として有望だが、商用実現には核融合装置内の超高温プラズマ燃料の精密監視が不可欠だ。温度や密度などの特性は反応の持続に重要であり、先進診断装置はこれらの極限条件を追跡する機器として機能する。
Researchers at Helmholtz-Zentrum Dresden-Rossendorf have filmed copper atoms losing and regaining electrons in femtoseconds using dual lasers. The experiment creates superheated plasma mimicking extreme cosmic conditions. Findings could advance laser fusion research.
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Researchers at the Princeton Plasma Physics Laboratory have identified plasma rotation as the key factor explaining why particles in fusion tokamaks strike one side of the exhaust system more than the other. Their simulations, which matched real experiments, combined rotation with sideways drifts. The discovery could improve designs for future fusion reactors.
Astronomers have identified massive rings of plasma around young M dwarf stars that function as built-in monitors for stellar space weather. These structures, presented at the American Astronomical Society meeting, could help assess conditions for habitable planets orbiting these common stars. The findings come from research by Carnegie's Luke Bouma and Moira Jardine of the University of St Andrews.
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A recent Government Accountability Office report has exposed significant shortcomings in federal oversight of geoengineering and weather modification activities in the United States. The findings highlight inadequate monitoring and reporting mechanisms that could allow untracked operations and fuel public misinformation. Experts call for improved transparency to address these issues amid growing interest in climate interventions.
Researchers using the DAMPE space telescope have identified a shared spectral softening in cosmic rays across multiple particle types. The pattern appears at a rigidity of about 15 teraelectron-volts for protons through iron nuclei. This finding, published in Nature, offers new insight into how these high-energy particles behave in the galaxy.