Photoionization of Synchrotron-Radiation-Excited Atoms: Separating Partial Cross Sections by Full Polarization Control

Aloïse, Stéphane; O’Keeffe, Patrick; Cubaynes, D.; Meyer, Michael; Grum–Grzhimailo, A. N.

doi:10.1103/physrevlett.94.223002

Cited by 21 publications

(24 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In such two-step schemes, final states with different total angular momentum quantum numbers J may be addressed with variable probability, depending on the relative polarization direction of the different radiation fields (see, e.g., [40,59,60,62,64]).…”

mentioning

confidence: 99%

Photoionization dynamics of excited Ne, Ar, Kr and Xe atoms near threshold

Sukhorukov¹,

Petrov²,

Schäfer³

et al. 2012

J. Phys. B: At. Mol. Opt. Phys.

View full text Add to dashboard Cite

A review of experimental and theoretical studies of the threshold photoionization of the heavier rare-gas atoms is presented, with particular emphasis on the autoionization resonances in the spectral region between the lowest two ionization thresholds (mp 5 2 P 3/2 and mp 5 2 P 1/2 , with m = 2, 3, 4, and 5 for Ne, Ar, Kr, and Xe, respectively). Observed trends in the positions, widths, and shapes of the autoionization resonances in dependence of the atomic number, the principal quantum number n, the orbital angular momentum quantum number and further quantum numbers such as K, J and F specifying the fine-and hyperfine-structure levels, are summarized and discussed in the light of ab initio and multichannel quantum defect theory calculations. The dependence of the photoionization spectra on the initially prepared neutral state, e.g. the 1 S 0 ground state, the mp 5 (m + 1)s 3 P 2 and mp 5 (m + 1)s 3 P 0 metastable levels and other states prepared from the ground or metastable levels in single-and multiphoton processes, are also discussed, including results on the photoionization of aligned and oriented samples and on photoelectron angular distributions. The effects of various approximations in the theoretical treatment of photoionization in these systems are analysed. The very large and at first sight discouraging diversity of observed phenomena and the numerous anomalies in spectral structures associated with the threshold ionization of the rare-gas atoms can be described in terms of a limited set of interactions and dynamical processes. Examples are provided illustrating characteristic aspects of the photoionization, and sets of recommended parameters describing the energy-level structure and photoionization dynamics of the rare-gas atoms are presented which were extracted in a critical analysis of the very large body of experimental and theoretical data available on these systems in the literature.

show abstract

mentioning

confidence: 99%

Photoionization dynamics of excited Ne, Ar, Kr and Xe atoms near threshold

Sukhorukov¹,

Petrov²,

Schäfer³

et al. 2012

J. Phys. B: At. Mol. Opt. Phys.

View full text Add to dashboard Cite

show abstract

“…Since the subsequent ionization by polarized SR provides sensitivity to the magnetic sublevels, a very detailed characterization of the photoionization process is obtained. For selected cases this type of measurements can even lead to the ''complete'' experiment [27,28]. In addition, the laser light can be used to polarize the atomic ground state via optical pumping (e.g.…”

Section: Polarization Effectsmentioning

confidence: 99%

“…to the determination of partial cross-sections. This approach has been used in the investigation of two-photon double-resonant ionization of atomic Xe [28]. The energy region of the autoionizing Xe*5p 5 ( 2 P 1/2 )8p 0 (J ¼ 0, 1, 2) resonances was studied via the intermediate Xe*5p 5 ( 2 P 3/2 )7s (J ¼ 1) resonance.…”

Section: Polarization Effectsmentioning

confidence: 99%