Stage 3 is the Radiation/Diffraction analysis performed by the program Aqwa-Line. It has no analysis activity in any of the other programs. When performing a Stage 3 analysis with Aqwa-Line, no input data categories are required for this stage. If starting from Stage 1, then only the Stage 1 and Stage 2 data categories (i.e. Data Categories 1 to 8) are required.

If the user has progressed to Stage 2 within Aqwa-Line and wishes to perform the Stage 3 Radiation/Diffraction analysis alone, with no subsequent post-processing (i.e. Stages 4 and 5), then only the Preliminary Data Category is required and the associated restart data record will start at Stage 3 and finish at Stage 3 (see The Preliminary Data (Data Category 0)).