Transition from Adiabatic to Sudden Excitation of Core Electrons

Thomas, T. D.

doi:10.1103/physrevlett.52.417

Cited by 141 publications

(92 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In view of these differences, it is surprising to see that the numerical values resulting from these different definitions are in fact rather similar, as is demonstrated in figure 1. This leads us to suggest (14) as a good working [7], dashed: Thomas [2], dot-dashed: Pattard and Burgdörfer [4]; the thick solid line shows the asymptotic E → ∞ limit.…”

mentioning

confidence: 92%

“…In this sense, the change in the effective potential does not occur suddenly anymore at finite energies, but rather over a timescale given by the velocity of the outgoing photoelectron. This is the basis for the definition of shake-off adopted in [2], where an expression has been derived from time-dependent perturbation theory, and also the rationale behind the somewhat ad-hoc formulation used in [4] which is motivated by a Rosen-Zener-like expression for diabatic transition probabilities familiar from ion-atom collisions. It should be noted that, in contrast to (14), both of these expressions show an exponential decrease towards threshold, so that the Wannier threshold law is recovered.…”

mentioning

confidence: 99%

See 1 more Smart Citation

On the role of shake-off in single-photon double ionization

Pattard¹,

Schneider²,

Rost³

2003

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

View full text Add to dashboard Cite

Abstract. The role of shake-off for double ionization of atoms by a single photon with finite energy has become the subject of debate. In this letter, we attempt to clarify the meaning of shake-off at low photon energies by comparing different formulations appearing in the literature and by suggesting a working definition. Moreover, we elaborate on the foundation and justification of a mixed quantum-classical ansatz for the calculation of single-photon double ionization.

show abstract

mentioning

confidence: 92%

mentioning

confidence: 99%

On the role of shake-off in single-photon double ionization

Pattard¹,

Schneider²,

Rost³

2003

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

View full text Add to dashboard Cite

show abstract

“…In the high photon energy, sudden limit, the satellite transition's intensity approaches a constant fraction of the main-line intensity. 2 Thomas has developed a model for the transition from the adiabatic to the sudden limit. In this model the sudden limit is ~lready closely approached at a relatively low value of the satellite photoelectron's kinetic energy.…”

Section: Introductionmentioning

confidence: 99%

Helium and neon photoelectron satellites at threshold

et al. 1986

View full text Add to dashboard Cite

“…The P SO (E) corresponds to the expression of Thomas [46] for shakeoff. R ∞ stands for the shake-off asymptotic high-energy limit, i.e., when the photoelectron is infinitely fast, E + is the binding energy of the remaining K-shell electron, r represents the distance inÅ traveled by the K photoelectron during the time the atomic potential changes, and E 2+ denotes the DPI threshold energy.…”

Section: Resultsmentioning

confidence: 99%

Photoinduced K-shell hollow atoms

Hoszowska

Dousse

2013

Journal of Electron Spectroscopy and Related Phenomena

View full text Add to dashboard Cite

The mechanisms leading to the production of hollow K shell atoms via single photon impact were investigated for a variety of light elements with 12 ≤ Z ≤ 23. The double 1s vacancy states were produced by irradiating the samples with intense monoenergetic synchrotron radiation beams. The double-to-single K-shell photoionization probabilities P KK and the absolute double K-shell photoionization cross sections 2+ were determined by measuring with a high-resolution bent von Hamos crystal spectrometer the K˛h hypersatellite X-ray emission of the samples. The measurements were performed over a wide range of incoming photon energies from threshold up to energies beyond the broad maximum of the double-tosingle photoionization cross section ratios. The P KK and 2+ were determined from the relative yields of the resolved K˛h hypersatellite lines. For Mg, Al and Si, the two-electron one-photon (TEOP) K˛˛h transitions which represent an alternative but much weaker decay channel for double 1s vacancy states could be also observed, using a highly efficient flat crystal wavelength dispersive spectrometer. This observation of single photon-induced TEOP transitions has shown that the I(K˛h)/I(K˛˛h) branching ratios are very poorly reproduced by most of existing theoretical models. Besides the relative yields of the hypersatellite and TEOP transitions, the energies and natural linewidths of the K˛h and K˛˛h X-ray lines were also determined. The energies are found to be in good agreement with different theoretical predictions, whereas the linewidths are significantly underestimated by the calculations, except if non-lifetime broadening effects such as the outer-shell ionization and the open valence configuration are taken into consideration.

show abstract

Transition from Adiabatic to Sudden Excitation of Core Electrons

Cited by 141 publications

References 7 publications

On the role of shake-off in single-photon double ionization

On the role of shake-off in single-photon double ionization

Helium and neon photoelectron satellites at threshold

Photoinduced K-shell hollow atoms

Contact Info

Product

Resources

About