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A: Fachverband Atomphysik

A 14: Highly Charged Ions

A 14.3: Vortrag

Dienstag, 7. März 2017, 15:00–15:15, HS 20

Dielectronic-recombination processes in highly-charged heavy ions — •Alexander Borovik^1,2,3, Joan Dreiling², Roshani Silwal^2,4, Dipti Dipti², Endre Takács^2,4, John Gillaspy^2,5, Ramaz Lomsadze^3,6, Vladimir Ovsyannikov³, Kurt Huber³, and Alfred Müller³ — ¹I. Physikalisches Institut, Justus-Liebig-Universität Gießen — ²Quantum Measurement Division, National Institute of Standards and Technology, Gaithersburg MD, USA — ³Institut für Atom- und Molekülphysik, Justus-Liebig-Universität Gießen — ⁴Department of Physics and Astronomy, Clemson University, Clemson SC, USA — ⁵Division of Physics, National Science Foundation, Arlington VA, USA — ⁶Department of Physics, Ivane Javakhishvili Tbilisi State University, Tbilisi, Georgia

Dielectronic-recombination (DR) spectra of highly-charged W^q+ and Ir^q+ ions have been measured by employing the Electron-Beam Ion Trap (EBIT) at National Institute of standards and Technology [1] and the Main Magnetic Focus Ion Trap (MaMFIT) [2] at Justus-Liebig Universität Gießen, respectively, over wide ranges of electron-beam energies. A series of DR resonances involving transitions between 2l → 3l′ and 2l → 4l′ subshells in Na-like through Ar-like tungsten have been revealed in the NIST EBIT spectra, while in the MaMFIT, DR resonances involving transitions between 2l → 3l′ subshells in K-like through Ni-like iridium were seen. Detailed modeling of the observed spectra has been performed. [1] J. D. Gillaspy, AIP Conf. Proc. 1438 (2012) 97. [2] V. P. Ovsyannikov, arXiv:1403.2168 (2014)