3/10/2024 0 Comments Zero background holder xrd![]() The resulting diffractograms were easy to sort out (both were halite - common salt)! Amazing. As you can see from the photos I didn't even have enough to fill the depression. I ran the *gently* crushed powders on a zero bg holder that has a 4 mm diam x 100 μ deep depression in the middle of a round holder. Here's the latest and most demanding application: I was given two vials of "yellow" and "white" grains to identify, total amount somewhere around a half to two grains of table salt (probably < 1 mg - the samples are from Antarctica and we can't easily get more). It's really been the most scientifically useful holder so far. Granted, good diffraction patterns can often be obtained from smaller samples by spreading the powder on a zero-background plate, but even then a few. When I put together the initial MiniFlex order I must have really guessed right when ordering the zero-background holder. Why should the peaks in powder XRD be shifted in 2 values when one uses zero background plate as opposed to standard sample holder Question. One area in which the Rigaku MiniFlex seems to be a hit is identifying very small amounts of (geo)material. ![]() ![]() Joel Sparks, Laboratory Manager, Department of Earth Sciences at Boston University reports:
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