APEX: cross-platform analysis program for EXAFS

We have developed version 1.0 of a freely available (including source code) suite of basic X-Ray Absorption Fine Structure (XAFS) data analysis progra ms for data reduction and single scattering analysis. This package is based on the University of Washington (UW/NRL) Fortran 77 programs that are avai lable on the International XAFS Society (XS) database, complemented by a gr aphical TCL/TK scripting language based user interface which runs virtually unchanged between platforms, using the native look and feel of the corresp onding platform. The package has been tested on MacOS 8.1, Linux, IRIX, Win dows95 and NT. Particular emphasis is placed on simplicity, reliability, an d (sup)portability. APEX 1.0 in its current form is suitable for routine da ta analysis and training, and systematic improvements and extensions to the underlying codes are planned.