REVIEW OF THE 3RD INTERNATIONAL OPACITY WORKSHOP AND CODE COMPARISON STUDY

The Third International Opacity Workshop and Code Comparison Study Wor k Op-III:94 was held in March 1994 at the Max-Planck-Institut fur Quan tenoptik (MPQ) in Garching, Germany. The meeting was organized by A. R ickert, J. Meyer-ter-Vehn and K. Eidmann from MPQ with strong support from Lawrence Livermore National Laboratory, especially by F. J. D. Se rduke and C. A. Iglesias. Twenty-one different codes participated in t he comparison and results for up to 35 test cases with elements throug hout the periodic table and two astrophysical mixtures were submitted prior to the meeting. There were 485 individual plasma calculations wi th about 150 Mbytes of information submitted. At the meeting, radiativ e opacities were compared in detail and differences in calculated resu lts were traced back to the physics input such that their origin becam e transparent. A review of these comparisons is given and detailed com parisons for some of the test cases are presented.