Determination of the plasma recombination rate coefficient

¹ Department of Atomic Physics, Stockholm University, SE106 91 Stockholm, Sweden
² Department of Physics, University of Strathclyde, Glasgow G4 0NG, UK

Corresponding author: R. Schuch, schuch@physto.se

Received: 18 March 2003
Accepted: 11 July 2003

Abstract

The absolute radiative and dielectronic recombination rate coefficients for were measured at the CRYRING storage ring for the center-of-mass energy range 0–43 eV, which covers all core excitations up to the 3p_1/2 and 3p_3/2 series limits. These are compared to an AUTOSTRUCTURE intermediate coupling calculation. The absolute rate coefficients are then convoluted with a Maxwellian temperature distribution to obtain the temperature dependent plasma recombination rate coefficient for the temperature range 10³–10⁷ K. The temperature dependent rate coefficient can be useful as a tool in both astrophysical and laboratory plasma diagnostics where the knowledge of ionization balance and level populations are of interest in deciphering the many emission lines observed and for the evaluation of the plasma temperature via emission line ratios.