CRYSTALS.DAT
The data file used to define crystal parameters. The file structure consists of one line per crystal. Generally this file is edited to specify special analyzing crystals such as layered dispersive elements (LDEs). The maximum number of defined crystals is determined by the MaxCrysType parameter in Probe for EPMA (currently set to 60). Each line contains the crystal name, the 2d spacing, the crystal K reflection parameter, followed by the default peaking element and x-ray line (not used at this time).
The crystals can be defined in any order, although ordered by 2d spacing is most convenient for editing purposes.
The spectrometer position of a specific wavelength is calculated according to the following formula. Note that Probe for EPMA always assumes a 1st order line for the purposes of the calculation :
Where : N is the order
d is the d spacing of the analyzing crystal
λ is the wavelength
K is the crystal reflection factor
"LiF420" 1.802 0. "fe" "ka"
"LiF220" 2.848 0. "fe" "ka"
"LIF" 4.0267 0.000058 "fe" "ka"
"NaCl" 5.641 0. "fe" "ka"
"Si" 6.2709 0. "ca" "ka"
"Ge" 6.532 0. "ca" "ka"
"QTZ011" 6.686 0. "ca" "ka"
"QTZ010" 8.50 0. "ca" "ka"
"PET" 8.750 0.000144 "ca" "ka"
"EDT" 8.808 0. "ca" "ka"
"ADP" 10.648 0.000476 "ca" "ka"
"GYPSUM" 15.19 0. "si" "ka"
"MICA" 19.8 0. "si" "ka"
"KAP" 26.63 0. "si" "ka"
"RAP" 26.12 0. "si" "ka"
"TAP" 25.745 0.00218 "si" "ka"
"WSi55" 55.0 0. "o" "ka"
"WSi60" 60.0 0.01483 "o" "ka"
"WSi63" 63.0 0. "o" "ka"
"NiCrBN" 65.0 0. "o" "ka"
"WC144" 144.0 0. "c" "ka"
"PbSTEA" 100.6 0. "c" "ka"
"OV 95" 96.8 0. "c" "ka"
"OV 200" 197.4 0. "b" "ka"
"" 0. 0. "" ""
"" 0. 0. "" ""
"" 0. 0. "" ""
"" 0. 0. "" ""
"" 0. 0. "" ""
"" 0. 0. "" ""
"" 0. 0. "" ""
"" 0. 0. "" ""