低场流动系统中激光增强液体129Xe的辐射阻尼信号
Radiation Damping of Laser-polarized Liquid 129 Xe in the Low Fie ld Flow System
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摘要: 通常只有当样品的自旋浓度很大 (如水中的质子 ) ,强磁场和使用高分辨率谱仪的条件下 ,辐射阻尼现象才能被观测到 .但是我们利用激光增强原子极化的方法 ,使液态12 9Xe极化度提高到1 .45 % ,相同条件下比未激光极化的极化度增强 5 0 0 0倍 ,因此我们能在低磁场流动系统中观测到液态129Xe的辐射阻尼.Radiation damping is usually observed only when a sample ha s high spin concentration, such as water protons, in the high magnetic field with high-resolution spectrometer. However, after we applied the technique of laser -enhanced nuclear polarization, the nuclear spin polarizations of the liquid 129 Xe is increased to 1.45% , which corresponded to the enhancements of 5 000 compared to that without optical pumping under the same conditions. Therefo re, we observed radiation damping of liquid ...Abstract: Radiation damping is usually observed only when a sample ha s high spin concentration, such as water protons, in the high magnetic field with high-resolution spectrometer. However, after we applied the technique of laser -enhanced nuclear polarization, the nuclear spin polarizations of the liquid 129 Xe is increased to 1.45% , which corresponded to the enhancements of 5 000 compared to that without optical pumping under the same conditions. Therefo re, we observed radiation damping of liquid ...
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