论文标题
固态目标中增强的张量极化
Enhanced Tensor Polarization in Solid-State Targets
论文作者
论文摘要
我们报告了固态目标上增强的张量极化的测量。此处的结果代表了张量极化的增加，而在高能和核散射实验中的实验的增加，该实验的重点是测量张量极化可观测值。使用增强技术，需要生产的RF接近目标旋转的Larmor频率，并使用由两个辐射来源，用于DNP工艺的微波炉以及用于操纵目标材料中能量水平的额外RF产生的选择性半饱和度。固体靶标的自旋动力学用于对齐旋转增强整体平均值，以提高散射实验的优点图。以优化速率的目标旋转可以通过在其NMR信号中具有pake Doublet的多晶材料中施加选择性半饱和度。
We report measurements of enhanced tensor polarization on solid-state targets. The results here represent an increase in tensor polarization over that previously achieved in high energy and nuclear scattering experiments that focused on the measurement of tensor polarized observables. Enhancement techniques are used which require RF produced close to the Larmor frequency of the target spins and use selective semi-saturation resulting from two sources of irradiation, microwave for the DNP process and the additional RF used to manipulate the population of the energy levels in the target material. The spin dynamics of the solid target are used to align the spins enhancing the ensemble average to improve the figure of merit of the scattering experiment. Target rotation at an optimized rate can lead to additional enhancement by applying selective semi-saturation in polycrystalline materials that possess a Pake doublet in their NMR signal.
