Dear George, You said: > By far the easiest way would be to use the programs (SAINT and SADABS) > provided by Bruker. We get excellent data, e.g. for in-house S-SAD > phasing, using these programs (either offline or as part of the Bruker > GUI) for data collected on our SMART6000. For a detailed S-SAD example > see Berhard's book page 424. Unlike MOSFLM, SAINT can integrate > non-merohedral twins handling the reflection overlap properly and can > process phi scans for which the oscillation axis is not perpendicular > to the incident beam.
Is there any advantage in having a phi-axis non-perpendicular to the beam? I would imagine the Lorentz factor increases for a large portion of the reflections, so in the end the majority has to be rejected anyway. The limit would be to have the phi-axis parallel to the beam. I suppose both SAINT and MOSFLM would have problems processing images collected that way. Is there an advantage in making more than one phi-scan? It does not give you extra information, just more of the same. I would think that one phi scan and additional omega scans at different settings of chi/kappa would be the most efficient way of getting complete data,. Best wishes, Bram _________________________ Bram Schierbeek Rigaku Europe E: bram.schierb...@rigaku.com W: http://www.rigaku.com/
