Have you ever heard of a “beam alignment substrate”? Probably not. But k-Space sells these little known but useful tools, and now we have a new video to show you how they work. These substrates are very useful when you find yourself struggling to properly align and focus your RHEED electron beam and could use assistance with determining beam placement. These substrates are basically a Si wafer coated with P43 phosphor (the same phosphor that RHEED screens are coated with). When the RHEED beam impinges on the alignment substrate, the phosphor fluoresces where the beam hits the substrate, allowing you to see the full profile of the electron beam.
Darryl Barlett, CEO of k-Space has this to say on the product; “The beam alignment substrates are easy to use and instantly let you know what’s going on with your electron beam: Where is it hitting the sample? How large an area am I sampling for the RHEED pattern? How much does the beam move on the sample when I adjust the x or y deflection? These are great things to know, and easily determined using the beam alignment substrate”. K-Space supplies these P43 phosphor-coated silicon wafers in 1”, 2”, 3”, and 4” diameters to fit your chamber needs. Watch the video to learn more about this small product that can make a big impact when it comes to the effectiveness of your RHEED analysis-
