MOA01
IMP/CAS, Lanzhou, People’s Republic of China
USTRAT/SUPA, Glasgow, United Kingdom
Fudan University, Shanghai, People’s Republic of China
USTC, Hefei, Anhui, People’s Republic of China
University of Leicester, Department of Physics and Astronomy, Leicester, United Kingdom
Based on the successful DR measurement of Be-like Ar14+* and Ca16+** at the cooler storage ring CSRm, the absolute electron-ion recombination rate coefficients for Na-like Kr25+ ions have been determined at the cooler storage ring CSRm at the Institute of Modern Physics in Lanzhou, China. In the electron-ion collision energy range 0-70 eV resonances due to 3s-3p,3d (DeltaN = 0) and 3s-4l (DeltaN = 1) core excitation were detected. The resonant energies and strengths were obtained by fitting to the spectrum with a anisotropic electron-energy distribution and compared to the calculated ones by using a relativistic configuration interaction flaxcible atomic code (FAC) and the distorted-wave collision package AUTOSTRUCTURE. The merged-beams recombination rate coefficients are then convolved with a Maxwellian-boltzmann distribution to obtain the temperature dependent plasma recombination rate coefficient (PRRC) within the temperature range 103-108 K.
*Z.K. Huang, W.Q. Wen, X. Xu, et al., Astrophys J Suppl S, 2018; 235, 2.
**S.X. Wang, X. Xu, Z.K. Huang, et al., The Astrophysical Journal, 2018; 862, 134.
