Journal article

Publication year: 2016

Journal: Journal of Physics B: Atomic, Molecular and Optical Physics

Volume number: 49

Issue number: 7

ISSN: 0953-4075

eISSN: 1361-6455

Open access status: Green

DOI Link: https://doi.org/10.1088/0953-4075/49/7/074004

Publisher: IOP Publishing

Abstract: 
We report measured rate coefficients for electron-ion recombination of Si10+ forming Si9+ and of Si9+ forming Si8+, respectively. The measurements were performed using the electron-ion merged-beams technique at a heavy-ion storage ring. Electron-ion collision energies ranged from 0 to 50. eV for Si9+ and from 0 to 2000. eV for Si10+, thus, extending previous measurements for Si-10+ (Orban et al 2010 Astrophys.. J. 721 1603) to much higher energies. Experimentally derived rate coefficients for the recombination of Si9+ and Si-10+ ions in a plasma are presented along with simple parameterizations. These rate coefficients are useful for the modeling of the charge balance of silicon in photoionized plasmas (Si9+ and Si10+) and in collisionally ionized plasmas (Si10+ only). In the corresponding temperature ranges, the experimentally derived rate coefficients agree with the latest corresponding theoretical results within the experimental uncertainties.

Harvard Citation style: Bernhardt, D., Becker, A., Brandau, C., Grieser, M., Hahn, M., Krantz, C., et al. (2016) Absolute rate coefficients for photorecombination of beryllium-like and boron-like silicon ions, Journal of Physics B: Atomic, Molecular and Optical Physics, 49(7), Article 074004. https://doi.org/10.1088/0953-4075/49/7/074004

APA Citation style: Bernhardt, D., Becker, A., Brandau, C., Grieser, M., Hahn, M., Krantz, C., Lestinsky, M., Novotny, O., Repnow, R., Savin, D., Spruck, K., Wolf, A., Müller, A., & Schippers, S. (2016). Absolute rate coefficients for photorecombination of beryllium-like and boron-like silicon ions. Journal of Physics B: Atomic, Molecular and Optical Physics. 49(7), Article 074004. https://doi.org/10.1088/0953-4075/49/7/074004