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 <[log in to unmask]> wrote:
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> 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
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>> www.medivir.com<http://www.medivir.com>
>>
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> Dr Tim Gruene
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