1/8/2013 User: I have some crystals for tomorrow. For some of those I used Lanthanides (Sm and Eu) and for some gold. Do you think a SAD experiment would work for both Lanthanides? James: If the lanthanides are bound, then yes, you could hit them both with a high-energy dataset. But, a real advantage of lanthanides is that their "white line" tends to be huge, so hitting the "peak" "spot on" can have its advantages. I'd say do the "MAD Scan" and see what you've got and then see what your diffraction looks like at the "peak". If its decent, I'd say go for that.