Journal article

Publication year: 2004

Pages: L209-L216

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

Volume number: 37

Issue number: 10

ISSN: 0953-4075

eISSN: 1361-6455

DOI Link: https://doi.org/10.1088/0953-4075/37/10/L02

Publisher: IOP Publishing

Abstract: 
Photoionization of triply charged titanium ions was investigated using the merged photon-ion beam technique at a synchrotron light source. The experimental photon energy range 42.6-49.4 eV encompasses the threshold for the photoionization of Ti3+(3p(6) 3d D-2(3/2)) ground-state ions at 43.267 eV. Prominent resonance features due to 3p --> 3d and 3p --> 4s excitations are observed with the strongest one being the 'giant' 3p(5) (3d(2 3) F) F-2 dipole resonance which has a width of 1.5 eV. Since it is located only 0.2 eV above the ionization threshold a cut-off of this resonance is observed in photoionization. By employing the principle of detailed balance the results are compared with an earlier experimental study of the time-reversed Ti4+ photorecombination. The comparison clarifies the giant resonance's role in photorecombination and yields state-selective photoionization and photorecombinaton cross sections on an absolute scale.

Harvard Citation style: Schippers, S., Müller, A., Phaneuf, R., van Zoest, T., Alvarez, I., Cisneros, C., et al. (2004) Threshold truncation of a 'giant' dipole resonance in photoionization of Ti3+, Journal of Physics B: Atomic, Molecular and Optical Physics, 37(10), Article PII S0953-4075(04)78007-4. pp. L209-L216. https://doi.org/10.1088/0953-4075/37/10/L02

APA Citation style: Schippers, S., Müller, A., Phaneuf, R., van Zoest, T., Alvarez, I., Cisneros, C., Emmons, E., Gharaibeh, M., Hinojosa, G., Schlachter, A., & Scully, S. (2004). Threshold truncation of a 'giant' dipole resonance in photoionization of Ti3+. Journal of Physics B: Atomic, Molecular and Optical Physics. 37(10), Article PII S0953-4075(04)78007-4, L209-L216. https://doi.org/10.1088/0953-4075/37/10/L02