Non-equilibrium between ions and electrons inside hot spots from National Ignition Facility experime

来源 :MatterandRadiationatExtremes | 被引量 : 0次 | 上传用户:oyfj2009
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
The non-equilibrium between ions and electrons in the hot spot can relax the ignition conditions in inertial confinement fusion [Fan et al., Phys. Plasmas 23, 010703 (2016)], and obvious ion-electron non-equilibrium could be observed by our simulations of high-foot implosions when the ion-electron relaxation is enlarged by a factor of 2. On the other hand, in many shots of high-foot implosions on the National Ignition Facility, the observed X-ray enhancement factors due to ablator mixing into the hot spot are less than unity assuming electrons and ions have the same temperature [Meezan et al., Phys. Plasmas 22, 062703 (2015)], which is not self-consistent because it can lead to negative ablator mixing into the hot spot. Actually, this non-consistency implies ion-electron non-equilibrium within the hot spot. From our study, we can infer that ionelectron non-equilibrium exists in high-foot implosions and the ion temperature could be ~9% larger than the equilibrium temperature in some NIF shots.
其他文献
光响应纳米基因载体可借外界光源实现基因的定时、定点释放,已逐渐成为非病毒基因载体研究的热点。根据响应光波长的不同,可将光响应纳米基因载体分为紫外/可见光响应的纳米基因载体和近红外光响应的纳米基因载体。综述了这两类载体材料当前的研究进展,阐述了其响应机理和释放过程,并总结了光响应纳米基因载体在构建过程中亟待解决的问题。
Photodynamic therapy based on photogeneration of cytotoxic singlet oxygen and following oxidative stress is currently used in neuro-oncology for destruction of brain tumors. However, along with a tumor, it damages healthy neurons and glial cells. We studi
We investigate the dynamics of strongly localized solitons trapped in remote troughs of radially periodic lattices with Kerr-type self-focusing nonlinearity. The rotary motion of solitons is found to be more stable for larger nonlinear wavenumbers, lower
针对成像系统中图像畸变对测量精度的影响,提出了基于Zernike矢量多项式的图像畸变校正方法。将基准图与畸变图中标记点的坐标用相同的归一化方法在单位圆内进行归一化,运用Zernike矢量多项式拟合基准图与畸变图的映射关系,利用得到的映射关系对畸变图进行校正并插值,得到校正图。然后对校正效果进行了评价,并与基于Matlab的相机标定工具箱方法进行了比较。实验结果表明:对径向畸变,Zernike矢量多项式方法与后者相比,均方根(RMS)误差减少近50%;对梯形畸变,Zernike矢量多项式校正方法可使RMS误
Red frequency-upconversion fluorescence emission is observed in europium (III) complex with encapsulating polybenzimidazole tripodal ligands, pumped with 930- and 1070-nm picosecond laser pulses. The luminescence of transition 5D0-
考虑一个运动的二能级原子与单模热光场强度相关耦合,采用量子约化熵研究原子和场的约化熵变化规律、原子与场的熵交换,用共生纠缠度研究原子与场的纠缠。并借助于数值计算方法,详细分析了在强度相关耦合J-C模型中,原子初态、热光场的平均光子数以及场模结构参数对熵交换和纠缠的影响。结果表明原子与光场的熵交换和纠缠均周期性地演化。选择适当的原子初态,可以使得原子的约化熵和光场的约化熵完全交换,这意味着原子与光场反相关。此外,场模结构参数增加导致熵交换的幅度减小,周期缩短。原子与热光场的纠缠随平均光子数的增加而减弱。
多普勒测风激光雷达是一种有效的具有高时空分辨率的遥感测风仪器。然而,由于雨滴反射的干扰信号,在雨天条件下进行精确的风廓线测量是一个挑战,但是这也为探测降雨提供了一种可能。在这项工作中,一台垂直指向的1.5μm全光纤相干多普勒激光雷达被应用于风和雨的同时探测。由于相干多普勒激光雷达能够进行精确的频谱测量,因此在下雨天,它可以同时检测到气溶胶和雨滴的回波信号。具有速度差异的气溶胶和雨滴的回波信号会导致
提出一种复合结构应变传感器,该结构将高灵敏度光纤法布里-珀罗干涉仪(FPI)内置于光纤Sagnac干涉仪(FSI)中。利用FPI光谱与定标的FSI光谱叠加产生的游标效应实现了FPI应变传感器灵敏度的大幅度提升。理论计算结果表明,复合结构传感器的灵敏度可以通过两套干涉谱的相对自由光谱区的差来调控。实验结果表明,复合结构传感器的灵敏度相对于单个FPI应变传感器提升了19.7倍,达到65.1 pm·με-1。复合结构传感器在需要高灵敏度测量以及精确测量的场景中具有重要作用。
期刊
A three-dimensional model of GaAs/AlGaAs quantum double rings in the lateral static electric field is investigated theoretically. The eigenvalue problem with the effective-mass approximation is solved by means of the finite-element method. The energy leve