On Wednesday 29 March 2006 13:13, Scott Calvin wrote:
Hello again,
The reason I was looking through the Lytle database was that I was looking for a standard I could use for an iron boron compound (more iron than boron). The database has one as "raw" data, but I don't recognize the format. The headers look like:
CUEDGE START STOP BEG FSCTS: 168620. 230500. 174080. 272000. 30. DELTA: 2000. 15. 90. 150. 210. DELEND: 217740. 214450. 200860. 187700. 174080. SEC: 1. 1. 1. 1. 1.
Does anyone recognize this?
Scott, The first column of the data is almost certainly encoder reading. Assume that the data were measured with a Si crystal and one of the common faces. If you assume that the CUEDGE is the encoder reading of 8979 eV and that 7112 eV must lie between 230500 and 174080, you should be able to figure out (using Bragg's law) what the number of steps per degree is and what the zero offset is. From there, it's just a few lines of Ifeffit to convert the data file into something Athena can grok. B P.S. I would *love* to know the beer back story also. Why don't I ever get research projects that involve beer? -- Bruce Ravel ---------------------------------------------- bravel@anl.gov Molecular Environmental Science Group, Building 203, Room E-165 MRCAT, Sector 10, Advanced Photon Source, Building 433, Room B007 Argonne National Laboratory phone and voice mail: (1) 630 252 5033 Argonne IL 60439, USA fax: (1) 630 252 9793 My homepage: http://cars9.uchicago.edu/~ravel EXAFS software: http://cars9.uchicago.edu/~ravel/software/exafs/