Can the radiation damage gurus comment on this ? I know there is a problem with radiation damage changing the valence state of metals, but I don't remember hearing about the metal actually being lost due to radiation damage. Is this really common ?
Thanks, Andrew On 30 Apr 2014, at 11:46, Tim Gruene <t...@shelx.uni-ac.gwdg.de> wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > Dear Dean, > > this is probably a very common observation: X-rays produce reducing > electrons and as you reduce a metal I imagine it does not like its > chemical environment as much as it did highly charged. > > Everything you can do to avoid radiation damage should help you > prevent the ion to disappear: > - - optimise your strategy to collect a minimal amount of data > - - add vitamin C > - - cool below 100K > - - collect at short wavelength > > When your ion is intended to be used for phasing there are of course > restraints limiting the choice. > > Regards, > Tim > > > On 04/30/2014 12:33 PM, Dean Derbyshire wrote: >> Hi all, Has anyone experienced catalytic metal ions disappearing >> during data collection ? If so, is there a way of preventing it? >> D. >> >> Dean Derbyshire Senior Research Scientist >> [cid:image001.jpg@01CF6470.5FA976D0] Box 1086 SE-141 22 Huddinge >> SWEDEN Visit: Lunastigen 7 Direct: +46 8 54683219 >> www.medivir.com<http://www.medivir.com> >> >> -------------------------------------------------------------------------- >> >> > This transmission is intended for the person to whom or the entity to > which it is addressed and may contain information that is privileged, > confidential and exempt from disclosure under applicable law. If you are > not the intended recipient, please be notified that any dissemination, > distribution or copying is strictly prohibited. If you have received > this transmission in error, please notify us immediately. >> Thank you for your cooperation. >> > > - -- > - -- > Dr Tim Gruene > Institut fuer anorganische Chemie > Tammannstr. 4 > D-37077 Goettingen > > GPG Key ID = A46BEE1A > > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v1.4.12 (GNU/Linux) > Comment: Using GnuPG with Icedove - http://www.enigmail.net/ > > iD8DBQFTYNSPUxlJ7aRr7hoRAr7WAKCzC7FzqTkcVLILovmIL74OUQlsWQCgg2Yr > xZgDCvIlf5YEWHLTDLiKcRc= > =tp4F > -----END PGP SIGNATURE-----
