Dielectronic recombination of metastable berylliumlike xenon ions

Abstract

Absolute rate coefficients for dielectronic recombination of Be-like Xe50+ have been measured by employing the electron-ion merged beam technique at GSI's heavy-ion storage ring ESR in the center-of-mass energy range 0 - 600 eV. In addition to ground state ions, resonances from metastable Xe50+ (2s2p3P0) parent ions have been observed. These may be exploited in future measurements of the E1M1 two photon 2s2p 3P0 → 2s21S0 transition rate.