This directory contains anomalous scattering factors and absorption coefficients of each elements. Any reports or publications of these data will acknowledge its use by an appropriate citation. This would refer to the following publication: 1. Anomalous scattering factors S.Sasaki (1989) Numerical Tables of Anomalous Scattering Factors Calculated by the Cromer and Liberman's Method, KEK Report, 88-14, 1-136 2. X-ray absorption coefficients S.Sasaki (1990) X-Ray Absorption Coefficients of the Elements (Li to Bi, U), KEK Report, 90-16, 1-143 If you have any question, please contact with Dr.Satoshi Sasaki, Tokyo Institute of Technology. sasaki@nc.titech.ac.jp