EELS光谱收集时特定损失能量选择

Energy shift.

一定不要用drift tube,最好用energy shift, 至于原因我还不太清楚。

Three ways to shift a spectrum
1. Magnetic prism – changing prism strength (Energy Shift)
2. High tension – electron accelerating voltage (Offset)
3. Drift tube – an extra retarding magnetic field, which responds faster than others, up to 1000eV shift (Drift Tube)

Default
1. Spectroscopy: Energy Shift (or Drift Tube) – not to compromise the illumination in STEM
2. Imaging: Offset – so electrons used to form the filtered image are at the alignment energy while travelling in the imaging system

非常感谢您的回复

我看三楼的说不要用drift tube,楼主能帮忙解释一下吗？

哈哈 我不是楼主 楼主帮忙解释下吧