Does the beamline have an attenuator? (I'm pretty sure SSRL BL4-2 has a series of them that can be flipped on.)
cheers, Kushol Kushol Gupta, Ph.D. Mathilde Krim Fellow in Basic Biomedical Research Van Duyne Laboratory - Univ. of Pennsylvania School of Medicine [email protected] 215-573-7260 / 267-259-0082 Hi Bill, 5-10% glycerol usually helps in the majority of cases. However, some proteins require a scan of different conditions and different protein concentrations. Like everything else, it's protein dependent. Changing the wavelength can also make a difference. I also know some SAXS beamlines like at the APS have capillary flow cells so they just do hit and runs. Susan On Jul 9, 2009, at 4:45 PM, William Scott wrote: > Hi folks: > > A colleague of mine here is doing small angle X-ray scattering at > SSRL and finding his samples are suffering significant radiation > damage. He asked me for advice as to what potential radical > scavengers might be useful. I told him to take 10 mg of ascorbic > acid and to call me in the morning. > > Anyone have a better suggestion that I might be able to pass along > to him? > > Many thanks in advance. > > Bill > >
