Oak Ridge National Laboratory

Physics Division

Physics Division Seminars

Physics Division Seminars bring us speakers on a variety of physics related subjects. Usually these are held in the Building 6008 large Conference Room, at 3:00 pm on the chosen day, but times and locations may vary. For more information, contact our seminar chairman,

Alfredo Galindo-Uribarri
Tel (Office): (865) 574-6124  (FAX): (865) 574-1268


Wed., July 09, 2003, at 11:00 a.m.

Studies of the dynamics of excited clusters and biomolecules in a small electrostatic storage ring

Jens Ulrik Andersen, Aarhus Center for Atomic Physics, University of Aarhus, Denmark
Building 6008, Conference Room

We have used a new electrostatic storage ring to study the dynamics of clusters, in particular fullerenes. With injection from an electrospray source also biomolecules in the gas phase can be investigated in the ring. In some cases the results are of direct relevance for our understanding of the behaviour of the molecules in their natural environment, in water solution or embedded in a protein. As an example, recent results for fragmentation of adenosine monophosphate nucleotides will be discussed, which give information about the stability of DNA under irradiation with UV light.

Reference: "The combination of an electrospray ion source and an electrostatic storage ring for lifetime and spectroscopy experiments on biomolecules" J.U. Andersen, et al. Rev. Sci. Instrum. 73, 1284 (2002).