TY  - EJOUR
AU  - Hoffknecht, A.
AU  - Brandau, C.
AU  - Bartsch, T.
AU  - Böhme, C.
AU  - Knopp, H.
AU  - Schippers, S.
AU  - Müller, A.
AU  - Kozhuharov, C.
AU  - Beckert, K.
AU  - Bosch, F.
AU  - Franzke, B.
AU  - Krämer, A.
AU  - Mokler, P.
AU  - Nolden, F.
AU  - Steck, M.
AU  - Stachura, Z.
AU  - Stöhlker, Th.
TI  - Recombination of bare Bi<sup>83+</sup> ions with electrons
JO  - Physical review / A
VL  - 63
IS  - 1
SN  - 1050-2947
CY  - College Park, Md.
PB  - APS
M1  - GSI-2013-04774
SP  - 012702
PY  - 2000
N1  - 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
AB  - 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.
LB  - PUB:(DE-HGF)25 ; PUB:(DE-HGF)16
DO  - DOI:10.1103/PhysRevA.63.012702
UR  - https://repository.gsi.de/record/54051
ER  -