Inner-shell photoionization in an excited atom: Many-electron effects and partial cross sections in 2p^{6}3p ^{2}P_{3/2} sodium atoms

Cubaynes, D.; Bizau, J. M.; Wuilleumier, Fj; Carré, B.; Gounand, F.

doi:10.1103/physrevlett.63.2460

Cited by 65 publications

(52 citation statements)

References 11 publications

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“…While this phenomenon has not yet been seen experimentally for highly excited states, the work on sodium [65,68,69] and more recent work on potassium [70] are certainly indicative of it. In addition, it has been observed experimentally in multiphoton ionization of excited barium [71] as well as in autoionization of core-excited argon [72].…”

Section: Photoionization Of Inner Shells Of Excited Statesmentioning

confidence: 99%

“…As an example, 2p inner-shell photoionization has been investigated experimentally [65] for both ground-state sodium atoms (1s 2 2s 2 2p 6 3s) and excited-state sodium atoms (1s 2 2s 2 2p 6 3p). As a practical matter, relaxation shows up as satellite transitions, i.e., photoionization processes where one electron is ionized and another is excited.…”

Section: Photoionization Of Inner Shells Of Excited Statesmentioning

confidence: 99%

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Fundamental Aspects of Atomic Photoionization with High-Brightness Light Sources

Starace

Manson

1996

VUV and Soft X-Ray Photoionization

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Section: Photoionization Of Inner Shells Of Excited Statesmentioning

confidence: 99%

Section: Photoionization Of Inner Shells Of Excited Statesmentioning

confidence: 99%

Fundamental Aspects of Atomic Photoionization with High-Brightness Light Sources

Starace

Manson

1996

VUV and Soft X-Ray Photoionization

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“…Thus, the relative intensity of every single 1;3 L J photoelectron line was measured, allowing sharp variations in individual electron lines to be observed. In previous photoionization experiments on Na atoms laser excited to the 2p 6 3p 2 P 3=2 state [11], a few broad groups of unresolved lines were recorded, allowing only configurationaveraged effects to be studied. Here we concentrate on the photolines due to single photoionization (2p 5 3p 1;3 L J final ionic states) as well as on the shakeup satellites (2p 5 4p 1;3 L J final ionic states) from the excited atom.…”

mentioning

confidence: 99%

Dynamically and Quasiforbidden Transitions in Photoionization of Open-Shell Atoms: A Combined Experimental and Theoretical Study

et al. 2004

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Completely fine-structure-resolved photoelectron spectra produced from sodium atoms selectively excited into the Na 2p 6 3p 2 P 1=2 and 2 P 3=2 states were obtained using a third generation synchrotron source in conjunction with laser pumping and high-resolution spectrometry. The spectra show dramatically different behaviors. The strong variations observed in the regions of the Na 2p 5 3p 1;3 L J photolines and the Na 2p 5 4p 1;3 L J shakeup satellites are explained within a generalized geometrical model, accounting for the intermediate angular momentum coupling in the ionic states. DOI: 10.1103/PhysRevLett.92.233002 PACS numbers: 32.80.Hd, 32.80.Fb The interaction of ionizing radiation with atoms is a key fundamental process in nature that occurs in many areas of physics. Probing atomic photoionization dynamics as clearly and rigorously as quantum mechanics permits provides an ideal testing ground for studying the complex interactions in the electronic cloud of an atom and enables critical comparison with predictions of the most advanced many-body theories. The interpretation of gas-phase studies offers an atomic perspective on the basic understanding of correlated systems that can be beneficial to other fields, such as plasmas, nanostructures, and highly correlated materials. In particular, photoelectron spectroscopy on open-shell atomic targets bring out specific phenomena arising from their nonspherical nature and developed fine structure [1][2][3][4][5].In this Letter, we report clear evidence for the influence of the total angular momentum J 0 of the initial atomic state on photoionization transitions to final fine-structure ionic states. We have been able to control J 0 by tuning the wavelength of a dye laser to the energy of two different selected excited atomic states and to measure with a highresolution spectrometer the fine-structure resolved photoelectron spectra produced by innershell photoionization of these excited states. Independent of the photon energy, dramatic variations of the relative line intensities arising from single photoionization as well as from photoionization accompanied by excitation (shakeup satellites) were observed. These results represent a clear example of quasiforbidden transitions in open-shell atomic systems as introduced ten years ago by Pan and Starace [6] going beyond the geometrical model [1,7,8]. Violation of the geometrical relations was detected for 3s photoionization of chlorine in the ground state at the photon energy of 29.2 eV [2], in good agreement with the predictions of Ref. [6]. Until now, no experiments have been carried out to study the quasiforbidden transitions in excited atoms. We find that, in addition to the clear observation of quasiforbidden transitions [6], other transitions can be either strongly depressed or enhanced. We interpret them by introducing the concept of dynamically forbidden transitions resulting from mutual cancellation of terms in the photoionization cross section. The dynamically forbidden transitions cannot be predicted by exp...

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“…A strong increase of the relative intensity of shake-up satellites in the inner-shell photoionization of excited Na atoms [2] was explained by the change of the localization of valence electron 1 Corresponding author. Tel.…”

Section: Introductionmentioning

confidence: 99%

Dependence of shake probability on nuclear charge in Li-, Na- and K-like ions

Kupliauskiene

Glemža

2005

Nuclear Instruments and Methods in Physics Research Section B:

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In sudden perturbation approximation, the probability of the shake-up process accompanying inner-shell ionization is calculated for the isoelectronic sequences of Li-, Na-and K-like ions in the ground and excited np and nd states. Numerical solutions of Hartree-Fock equations and hydrogen-like radial orbitals are used. Very large differences between the results of both approximations for all ions and strong dependences on ion charge are obtained at the beginning of the isoelectronic sequences.

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Inner-shell photoionization in an excited atom: Many-electron effects and partial cross sections in 2p^{6}3p ^{2}P_{3/2} sodium atoms

Cited by 65 publications

References 11 publications

Fundamental Aspects of Atomic Photoionization with High-Brightness Light Sources

Fundamental Aspects of Atomic Photoionization with High-Brightness Light Sources

Dynamically and Quasiforbidden Transitions in Photoionization of Open-Shell Atoms: A Combined Experimental and Theoretical Study

Dependence of shake probability on nuclear charge in Li-, Na- and K-like ions

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