This is a complete example of the "gnxas" data analysis on good
quality spectra of the SiCl_4 molecule in the gas phase (Si K-edge). 

The 4 subdirectories contain 
dat  experimental data LURE ACO 1988
cry  molecular input (program crymol)
pha  phase-shift input file and calculation  (program phagen)
xas  signal calculation gamma2,X2,X4,X6 (program gnxas)
fit  fitting and statistical analysis (program fitheo) 

The data have been published in ref. [1] and [2]:

[1] A. Di Cicco, S. Stizza, A. Filipponi, F. Boscherini, and S. Mobilio,
{\sl``X-ray Absorption Spectrum of SiX$_4$ (X=Cl, F, CH$_3$).''},  
J. Phys. B, At. Mol. and Opt. Phys. {\bf{25}}, 2309 (1992).

[2] A. Filipponi, A. Di Cicco, T. A. Tyson, and C.R. Natoli,
{\sl``Ab-initio modelling of X-ray absorption spectra.''}, 
Solid State Commun. {\bf{78}}, 265 (1991).


WARNING
The output refers to the results obtained using a Linux operating 
system. This example should run also on other operating systems, 
but, slightly different numerical results may be obtained due to the 
different FORTRAN compilers and/or hardware characteristics, 
especially in the case of the fitheo program. 






