ELFT HÍRADÓ

[Nagy Denes Lajos <nagy AT rmki.kfki.hu>]

Kedves Kollégák,

Garab Győző kérésére továbbítom az alábbi felhívást.

Üdvözlettel:

              Nagy Dénes Lajos

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Dear Colleague,
I would appreciate if you could spread the information about this PhD
position to  potentially interested students.

With the best wishes
Villy Sundstrom

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PhD student position
Ultrafast X-ray absorption spectroscopy for molecular
structural dynamics
(contact person: Villy Sundström)
Time resolved X-ray absorption fine structure spectroscopy (XAFS) is a
  powerful probe of the chemical state and local atomic structure.
Since XAFS   spectra can be measured for essentially all atoms, this
spectroscopy can   provide detailed information about local chemical
and structural properties   (valence state, coordination number and
chemical nature of nearest neighbors,   distances) of molecules and
materials. The studied reactions will be triggered   by the
femtosecond pulses of an amplified titanium:sapphire laser system, and
  probing X-ray pulses are obtained from either the MAX II synchrotron
(line   BL 611) or a laser-generated plasma using the "low energy arm"
of the TW   laser at LLC. Both routes are pursued in order to access
both high sensitivity   (MAX-lab) and high temporal resolution (LLC).
The first goal is to obtain   high quality XAFS spectra at MAX-lab
with ~500 ps time resolution of   multinuclear transition metal
complexes used in artificial photosynthesis.  Possibilities to achieve
picosecond and sub-picosecond resolution will be  explored with a
X-ray streak camera. Detailed studies of electron transfer  processes
in supramolecular systems and  in biomolecules will be performed.
Work at other facilities, e.g. the Swiss Light Source may be also
anticipated.  A new initiative to create a short-pulse X-ray beam line
at MAX may also  enable pump-probe femtosecond studies at MAX- lab
during this programme.


More info is found at:

http://www.chemphys.lu.se/positions.htm