ISSN:
1434-6079
Keywords:
34.80.Kw
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract Dielectronic recombination (DR) of Ar15+(1s 22s) ions was studied in a single-pass merged-beams experiment at the UNILAC (universal linear accelerator) of GSI. Absolute recombination rates and cross sections were measured for electron-ion center-of-mass energies from 0 to 580 eV. A number of Rydberg states formed by DR with 2s → 2p (Δn=0) and 2s → 3ℓ (Δn=1) core excitations and even individual terms in the 1s 23ℓ3ℓ′ configuration could be resolved. Theoretical calculations of DR cross sections are in good overall agreement with the data. In the calculations for Δn=0 transitions, effects of electric fields have to be included to reproduce the magnitude of the measured DR rates at the limit of the 2 p 1/2ℓ and 2 p 3/2ℓ Rydberg series. Discrepancies between theory and experiment are observed at the series limits of the (1s 23ℓnℓ′) Rydberg series.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01426394
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