Hi folks, One of my chores for today is to implement a utility in Athena for converting encoder readings in a raw data file into energy. This will make some of the data in the Lytle database a bit easier to use. One of the things that the user must specify is the d-spacing of the mono crystal. I want to provide a menu of common crystals. The orange book is kind enough to provide an exhaustive list -- but it's kind of overkill. Somehow I doubt if many people are using a sucrose 001 monochromator even though that d-spacing is given in the orange book ;-) (Really! It's on page 4-12!) I want to do an informal survey of what crystals the ifeffit crowd regularly uses. I am certainly going to include Si111, Si311, and Si200 in the list, so I don't need to hear from people who use those crystals. What others should go in the list? Beryl? Germanium? Graphite? Let me know.... Thanks, B -- Bruce Ravel ----------------------------------- ravel@phys.washington.edu Code 6134, Building 3, Room 405 Naval Research Laboratory phone: (1) 202 767 2268 Washington DC 20375, USA fax: (1) 202 767 4642 NRL Synchrotron Radiation Consortium (NRL-SRC) Beamlines X11a, X11b, X23b National Synchrotron Light Source Brookhaven National Laboratory, Upton, NY 11973 My homepage: http://feff.phys.washington.edu/~ravel EXAFS software: http://feff.phys.washington.edu/~ravel/software/exafs/