Final Rydberg state population probabilities of multiply charged ions escaping solid surfaces

Nedeljković, N. N.; Galijaš, S.M.D.; Majkić, M.D.

doi:10.1016/j.susc.2009.05.016

Cited by 9 publications

(2 citation statements)

References 41 publications

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“…First, in the presented model all ionic projectiles have been considered as point-like. The more realistic description of the ionic core, with core polarization effectively taken into account, can be included into the population/reionization model, using the modified wave function Ψ 2 [24,25]. Second, the electron transitions in the very vicinity of the potential barrier top can be considered more accurately, like in Ref.…”

Section: Discussionmentioning

confidence: 99%

Formation and decay of the Rydberg states of multiply charged ions interacting with solid surfaces

Mirković

Nedeljković

Božanić

2010

J. Phys.: Conf. Ser.

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Processes of formation and decay of the Rydberg states of multiply charged ions escaping solid surfaces with intermediate velocities ( ≈ 1 a.u.) represent complex quantum events that require a detailed quantum description. We have developed a two-state vector model for the population process, with the functions Ψ1 and Ψ2 for definition of the state of a single active electron. The electron exchange between the solid and the moving ion is described by a mixed flux through a plane positioned between them. For the low values of the angular momentum quantum numbers the radial electronic coordinate can be neglected, whereas for the large-values a wide space region around the projectile trajectory was taken into account. The reionization of the previously populated states is considered as a decay of the wave function Ψ 2 . The corresponding decay rates are obtained by an appropriate etalon equation method: in the large-case the radial electronic coordinate is treated as a variational parameter. The theoretical predictions based on that population-reionization mechanism are compared with the available beam-foil experimental data, as well as the experimental data obtained in the interaction of multiply charged ions with micro-capillary foil. Generally, the model reproduces the experimentally observed non-linear trend of the distributions from = 0 to max = − 1.

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Section: Discussionmentioning

confidence: 99%

Formation and decay of the Rydberg states of multiply charged ions interacting with solid surfaces

Mirković

Nedeljković

Božanić

2010

J. Phys.: Conf. Ser.

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“…This kind of problem has been considered also within the framework of the TWF method [14] concerning the neutralization dynamics at low ionic velocities (v=1 a.u.). Further, the previous [15][16][17] and recent theoretical studies [18,19] of the one-electron capture into the Rydberg states of highly charged ions, performed in the intermediate velocity range (v≈1 a.u. ), were devoted to the final probability distributions.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of electron capture distances of the Rydberg ion-surface interactions

Galijaš¹,

Poparić²

2019

Phys. Scr.

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The theoretical research of the electron capture dynamics is essential for describing a variety of ion-surface processes. We analyze the intermediate stages of the population of the Rydberg states (n A ?1, l A =0−2) of highly charged ions escaping metal surface in the normal geometry by using the two-wave-function (TWF) method. Within the framework of the proposed timesymmetrized quantum model, the state of a single active electron is described by two wave functions r t , 1 Y  ( ) and r t , 2 Y  ( ), evolving continuously and causally from a fixed initial state of the past (t=t in ) and from a fixed final state of the future (t=t fin ), respectively. A TWF method of the single active electron in the ion-surface system has been extended and applied to analyze the population of the highly charged Rydberg ions at intermediate ionic velocities (v≈1 a.u.). The obtained rates demonstrate that the neutralization is unstable near the surface, indicating that additional reionization process is very active and completely destroy previously populated states. At larger ion-surface distances the population process is stabilized and allows estimation of the neutralization distances. The results are compared with the coupled-angular-mode method as well as with the values calculated by using the first-order transition rates and the classical overthe-barrier predictions.

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Initial population of large-l Rydberg states for the radiative deexcitation in the beam-foil geometry

Nedeljković¹,

Galijaš²,

Mirković³

2014

Journal of Quantitative Spectroscopy and Radiative Transfer

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Final Rydberg state population probabilities of multiply charged ions escaping solid surfaces

Cited by 9 publications

References 41 publications

Formation and decay of the Rydberg states of multiply charged ions interacting with solid surfaces

Formation and decay of the Rydberg states of multiply charged ions interacting with solid surfaces

Evaluation of electron capture distances of the Rydberg ion-surface interactions

Initial population of large-l Rydberg states for the radiative deexcitation in the beam-foil geometry

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