%0 Electronic Article
%A Hoffknecht, A.
%A Brandau, C.
%A Bartsch, T.
%A Böhme, C.
%A Knopp, H.
%A Schippers, S.
%A Müller, A.
%A Kozhuharov, C.
%A Beckert, K.
%A Bosch, F.
%A Franzke, B.
%A Krämer, A.
%A Mokler, P.
%A Nolden, F.
%A Steck, M.
%A Stachura, Z.
%A Stöhlker, Th.
%T Recombination of bare Bi<sup>83+</sup> ions with electrons
%J Physical review / A
%V 63
%N 1
%@ 1050-2947
%C College Park, Md.
%I APS
%M GSI-2013-04774
%P 012702
%D 2000
%Z 12 pages, 14 figures, to be published in Phys. Rev. A, see also   http://www.gsi.de/ap/ and http://www.strz.uni-giessen.de/~k3
%X Electron-ion recombination of completely stripped Bi83+ was investigated at the Experimental Storage Ring (ESR) of the GSI in Darmstadt. It was the first experiment of this kind with a bare ion heavier than argon. Absolute recombination rate coefficients have been measured for relative energies between ions and electrons from 0 up to about 125 eV. In the energy range from 15 meV to 125 eV a very good agreement is found between the experimental result and theory for radiative recombination (RR). However, below 15 meV the experimental rate increasingly exceeds the RR calculation and at Erel = 0 eV it is a factor of 5.2 above the expected value. For further investigation of this enhancement phenomenon the electron density in the interaction region was set to 1.6E6/cm3, 3.2E6/cm3 and 4.7E6/cm3. This variation had no significant influence on the recombination rate. An additional variation of the magnetic guiding field of the electrons from 70 mT to 150 mT in steps of 1 mT resulted in periodic oscillations of the rate which are accompanied by considerable changes of the transverse electron temperature.
%F PUB:(DE-HGF)25 ; PUB:(DE-HGF)16
%9 PreprintJournal Article
%R 10.1103/PhysRevA.63.012702
%U https://repository.gsi.de/record/54051