Nonlocal heat flux was measured in laser-produced coronal plasmas using a novel Thomson scattering technique. The measured heat flux was smaller than the classical values inferred from the measured plasma conditions in regions with large temperature gradients and agreed with classical values for weak gradients. Vlasov-Fokker-Planck simulations self-consistently calculated the electron distribution functions used to reproduce the measured Thomson scattering spectra and to determine the heat flux. Multigroup nonlocal simulations overestimated the measured heat flux.

中文翻译：

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用汤姆森散射观测非局部热通量

使用新型Thomson散射技术在激光产生的冠状等离子体中测量了非局部热通量。测得的热通量小于在大温度梯度区域中从等离子条件测得的经典值，并且与弱梯度的经典值一致。Vlasov-Fokker-Planck模拟自洽地计算了电子分布函数，该函数用于再现测得的汤姆森散射光谱并确定热通量。多组非局部模拟高估了测得的热通量。