| Zugriffsnummer | 36716 |
| Dokumenttyp | Zeitschriftenartikel |
| Sprache | Englisch |
| Titel | Level sequence and splitting identification of closely spaced energy levels by angle-resolved analysis of fluorescence light |
| Autor(in); Institution |
Wu, Zhongwen W.; Helmholtz-Institut Jena, Jena, GERMANY; Northwest Normal University, Key Laboratory of Atomic and Molecular Physics and Functional Materials of Gansu Province, College of Physics and Electronic Engineering, Lanzhou, P.R. CHINA
Volotka, Andrey V.; Helmholtz-Institut Jena, Jena, GERMANY; St. Petersburg State University, Department of Physics, St. Petersburg, RUSSIA
Surzhykov, Andrey; FPM, Fundamentale Physik für Metrologie, PTB-Braunschweig; Technische Universität, Braunschweig, GERMANY
Dong, Chengdon Z.; Northwest Normal University, Key Laboratory of Atomic and Molecular Physics and Functional Materials of Gansu Province, College of Physics and Electronic Engineering, Lanzhou, P.R. CHINA
Fritzsche, Stephan; Helmholtz-Institut Jena, Jena, GERMANY; Friedrich-Schiller-Universität Jena, Theoretisch-Physikalisches Institut, Jena, GERMANY
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| Quelle/Jahr | Physical Review A: 93 (2016), 6, 063413-1 - 063413-8 |
| ISSN | 2469-9926 (PRINT) ; 2469-9934 (ONLINE) |
| DOI | |
| URL | |
| Verlag | New York, NY: American Physical Society (APS) |
| Freie Schlagworte | radiative decay ; level identification ; angular distribution |
| Zusammenfassung | The angular distribution and linear polarization of the fluorescence light following the resonant photoexcitation is investigated within the framework of density matrix and second-order perturbation theory. Emphasis has been placed on "signatures" for determining the level sequence and splitting of intermediate (partially) overlapping resonances, if analyzed as a function of photon energy of incident light. Detailed computations within the multiconfiguration Dirac–Fock method have been performed, especially for the 1s²2s ²2p63s, Ji = 1/2 + γ 1 → (1s²2s2p6 3s) 13p3/2, J = 1/2,3/2 → 1s²2s²2p63s, Jf = 1/2 + γ2 photoexcitation and subsequent fluorescence emission of atomic sodium. A remarkably strong dependence of the angular distribution and linear polarization of the γ2 fluorescence emission is found upon the level sequence and splitting of the intermediate (1s² 2s2p63s)13p3/2, J = 1/2,3/2 overlapping resonances owing to their finite lifetime (linewidth). We therefore suggest that accurate measurements of the angular distribution and linear polarization might help identify the sequence and small splittings of closely spaced energy levels, even if they cannot be spectroscopically resolved. |
Zitierung
Wu, Z. W., Volotka, A. V., Surzhykov, A., Dong, C. Z., & Fritzsche, S. (2016). Level sequence and splitting identification of closely spaced energy levels by angle-resolved analysis of fluorescence light. Physical Review A, 93(6), 063413-1–063413-8. https://doi.org/10.1103/physreva.93.063413