AI 中文总结
该研究通过激光驱动实验证实电子-only磁重联外流中存在 lower-hybrid drift 不稳定性，发现离子在该过程的能量耗散与转移中具有此前未被认知的关键作用。
AI 中文摘要
我们报道了电子-only磁重联电流片法向方向 lower-hybrid drift 不稳定性的实验证据。在我们的激光驱动电容线圈实验中，系统尺寸（约3个离子趋肤深度）使其处于电子-only regime。然而，汤姆孙散射显示出平面外电子漂移振荡，其频率为当地 lower-hybrid 频率，动能密度达到当地磁能密度的约18%。利用测量参数的线性理论预测其增长超过10个 e-folding 时间，表明该不稳定性在测量窗口内达到非线性 regime。在粒子-in-cell 模拟的支持下，这些结果证明了离子在电子-only磁重联的耗散和能量转移中的重要性，而此前其重要性未被认识到。
英文摘要
We report experimental evidence for the lower-hybrid drift instability in the current sheet normal direction of electron-only magnetic reconnection. In our laser-driven capacitor-coil experiment, the system size ($\sim$3 ion skin depths) places it in the electron-only regime. Yet, Thomson scattering reveals out-of-plane electron drift oscillations at the local lower-hybrid frequency, with kinetic energy density reaching $\sim$18% of the local magnetic energy density. Linear theory with the measured parameters predicts more than ten e-folding times of growth, indicating that the instability reaches the nonlinear regime within the measurement window. Supported by particle-in-cell simulations, these results demonstrate the importance of ions in the dissipation and energy transfer in electron-only reconnection where their significance has not been previously recognized.
Comments8 pages, 4 figures
