I'll second the previous glycerol posting. However, beware condensation problems and watch the dew point when using lower temperatures. Condensation can really screw up the signal.
Note that scavengers that work under cryogenic conditions can actually be worse in SAXS, instead of just an electron problem you also have mobile OH radicals and all sorts of other stuff normally static in the vitrified state. It depends on how the electron scavengers interact with these. Scratching my head over lots of data on this. Eddie > Hi Bill, > 2mM DTT usually helps. > Besides, using a large cell which moves up and down and, of course, > low temperatures also help. > Bests > > > 2009/7/10 William Scott <[email protected]>: >> 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 >> >> >> >> William G. Scott >> >> Contact info: >> http://chemistry.ucsc.edu/~wgscott/ >> >> LinkedIn: >> http://www.linkedin.com/in/wgscott >> > > > > -- > Ruben Martinez-Buey. PhD >
