Hydrogen embedded in Ni: Production by incident atomic hydrogen and detection by high-resolution electron energy loss.
Hydrogen embedded in Ni: Production by incident atomic hydrogen and detection by high-resolution electron energy loss.
复制标题
嵌入镍中的氢：通过入射原子氢产生并通过高分辨率电子能量损失进行检测。
作者：
Johnson;Maynard;Daley;Yang;Ceyer
嵌入镍晶体中的氢的振动模式可以通过高分辨率电子能量损失光谱来检测，并且基于非弹性电子强度对电子碰撞能量的依赖性，可以与吸附氢的振动模式明确区分。嵌入的氢的振动频率为 800-850 cm -1 ，观察到在 180 至 220 K 之间以 H 2 形式重新结合和解吸。在 UHV 条件下通过暴露于原子氢实现将氢吸收到 Ni(111) 中
The vibrational modes of hydrogen embedded in a Ni crystal are shown to be detectable by high-resolution electron-energy-loss spectroscopy and to be unambiguously distinguishable from the vibrational modes of adsorbed hydrogen on the basis of the dependence of the inelastic electron intensity on electron impact energy. The embedded hydrogen has a vibrational frequency of 800-850 cm -1 and is observed to recombine and desorb as H 2 between 180 and 220 K. The absorption of hydrogen into Ni(111) is achieved under UHV conditions by exposure to atomic hydrogen