Journalartikel

Jahr der Veröffentlichung: 2014

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

Bandnummer: 47

Heftnummer: 13

ISSN: 0953-4075

eISSN: 1361-6455

Open Access Status: Hybrid

DOI Link: https://doi.org/10.1088/0953-4075/47/13/135201

Verlag: IOP Publishing

Abstract: 
Absolute cross sections for the K-shell photoionization of Be-like boron ions were measured with the ion-photon merged-beams technique at the Advanced Light Source synchrotron radiation facility. High-resolution spectroscopy with E/Delta E up to 8800 (Delta E similar to 22 meV) covered the energy ranges 193.7-194.7 eV and 209-215 eV. Lifetimes of the strongest resonances are determined with relative uncertainties down to approximately 4% for the broadest resonance. The measured resonance strengths are consistent with 60% 1s(2)2s(2) S-1 ground-state and 40% 1s(2)2s2p P-3(o) metastable-state ions in the primary ion beam and confirmed by comparison with independent absolute photo-recombination heavy-ion storage-ring measurements with B2+ ions using the principle of detailed balance. Experimental determination of the line width for the 1s2s(2)2p P-1(o) resonance gives a value of 47 +/- 2 meV and compares favourably to a theoretical estimate of 47 meV from the R-matrix with pseudo-states (RMPS) method. The measured line widths of the 1s2s2p(2) P-3, D-3 resonances are 10.0 +/- 2 meV and 32 +/- 3 meV, respectively, compared to RMPS theoretical estimates of 9 meV and 34 meV.

Harvard-Zitierstil: Müller, A., Schippers, S., Phaneuf, R., Scully, S., Aguilar, A., Cisneros, C., et al. (2014) K-shell photoionization of Be-like boron (B+) ions: experiment and theory, Journal of Physics B: Atomic, Molecular and Optical Physics, 47(13), Article 135201. https://doi.org/10.1088/0953-4075/47/13/135201

APA-Zitierstil: Müller, A., Schippers, S., Phaneuf, R., Scully, S., Aguilar, A., Cisneros, C., Gharaibeh, M., Schlachter, A., & McLaughlin, B. (2014). K-shell photoionization of Be-like boron (B+) ions: experiment and theory. Journal of Physics B: Atomic, Molecular and Optical Physics. 47(13), Article 135201. https://doi.org/10.1088/0953-4075/47/13/135201