State-selective single- and double-electron capture processes in slow C<sup>4+</sup>+He, Ne, Ar and Xe collisions

Cederquist, H.; Anderson, L H; Bárány, A; Hvelplund, P.; Knudsen, H.; Nielsen, Esben; Pedersen, John; Sorensen, J

doi:10.1088/0022-3700/18/19/017

Cited by 58 publications

(20 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In He 2ϩ ϩ H collisions, the charge capture process into the n ϭ 2 shell of the projectile presents an outstanding example for two-component interference in a system of atomic dimensions. Detailed studies of Stueckelberg oscillations have previously been performed for, e.g., the C 4 ϩ He system [13][14][15]. Also, microscopic Young-type interferences from two atomic centers have recently been observed in fast ion-atom collisions involving molecular hydrogen [16,17].…”

Section: Introduction Dmentioning

confidence: 99%

Stueckelberg oscillations in the charge transfer into the n = 2 and n = 3 shells of He² on collision with H

Stolterfoht

Cabrera‐Trujillo

Krstić

et al. 2009

Int J of Quantum Chemistry

View full text Add to dashboard Cite

Probabilities for charge transfer by He 2ϩ impact on atomic H are calculated at low-collision energies using an ab initio theory, which solves the timedependent Schrö dinger equation. The charge transfer is interpreted in terms of radial and rotational couplings of molecular orbitals. Strong Stueckelberg oscillations for the charge transfer probability into the n ϭ 2 shell of helium are observed over nearly the entire impact parameter range. The same oscillations are found for the charge transfer into the n ϭ 3 shell in the impact parameter range from 2.5 a.u. upwards, whereas at impact parameters below 2.5 a.u. the oscillations disappear abruptly. This observation is associated with specific pathways along the potential curves, which are responsible for the charge transfer. Similarities with the interferences in Young's two-slit experiment are pointed out.

show abstract

Section: Introduction Dmentioning

confidence: 99%

Stueckelberg oscillations in the charge transfer into the n = 2 and n = 3 shells of He² on collision with H

Stolterfoht

Cabrera‐Trujillo

Krstić

et al. 2009

Int J of Quantum Chemistry

View full text Add to dashboard Cite

show abstract

“…In the original version this state is expected to be only marginally populated whereas in the modified version it is expected to be populated appreciably. Note that more sophisticated calculations [11,[19][20][21] and translational energy spectroscopy measurements [22,23] agree on a strong dominance of the C 2+ (2s 2) final state.…”

Section: Discussionmentioning

confidence: 75%

Simultaneous electron capture and target ion excitation in collisions of C4+ and N5+ on He

Hoekstra

Beijers²,

Heer

et al. 1993

Z Phys D - Atoms, Molecules and Clusters

View full text Add to dashboard Cite

Abstract.Cross sections for simultaneous electron capture and target ion excitation have been measured for impact of stow He-like C 4+ and N s+ ions on He. The energy of the primary ion beams has been varied over more than two orders of magnitude: 0.05-7 keV/amu. The results are discussed on basis of a slightly modified version of the "dynamic" classical over-barrier model for multiple electron capture. The differences in the energy dependences of the experimental results of C 4÷ and N 5+ -He can be explained qualitatively by assuming that for N 5+ binding energy sharing between the two participating electrons is of importance, particularly at the lower impact energies.

show abstract

“…, for studies of the branching between autoionization and photon decay in cases where two-electron capture populates states above the ionization limit [ll -13]. The excitation energies of the C + states formed in the present C +-Ne collisions, however, turn out to be insufficient for autoionization [14].…”

Section: Introductionmentioning

confidence: 99%

“…Like the well-known C +-He case, where two-electron capture dominates one-electron capture at low energies, there are no suitable crossings within the reaction window leading to capture of an outer electron [14 -18,8]. However, for Ne there is a lower-lying subshell in the target, making it possible to capture one of the more deeply bound 28 electrons to C + inside the reaction window for capture &om 2p at an internuclear distance of about 5ap [14]. This, together with the fact that a larger number of double-capture channels are active in the C4+-Ne case, makes the system more complicated to analyze than C +-He.…”

Section: Introductionmentioning

confidence: 99%

Angular distributions for single- and double-electron capture in slowC4+-Ne collisions

et al. 1994

View full text Add to dashboard Cite

In an earlier experiment by H. Cederquist et al. [J. Phys. 8 18, 3951 (1985)] an unusual Q-value distribution for true double-electron capture was reported for 400-eV C +-Ne collisions: strong population of reaction channels resulting in Q values between 27 and 35 eV followed by weakly populated channels in the region 18 -25 eV and then again a strong channel at Q=16 eV. The last channel is nearly degenerate in Q value with the dominant single-electron capture reaction. Here, we report measured angular distributions for scattered projectiles in single-and double-electron capture at collision energies 0.6 -1.0 keV. At 0.6 keV both single-and double-electron capture exhibit strong forward peaks for Q 16 eV. The intensity for the latter, but not the former, decreases drastically when the energy is raised to 1 keV. The energy dependence of the angular distribution for double-electron capture with Q ) 20 eV can be qualitatively understood in simple terms; singleelectron captures to 2s and 2p orbitals, however, yield unexpectedly wide and structured angular distributions.PACS number(s): 34.70.+e, 34.50.Fa

show abstract

State-selective single- and double-electron capture processes in slow C⁴⁺+He, Ne, Ar and Xe collisions

Cited by 58 publications

References 30 publications

Stueckelberg oscillations in the charge transfer into the n = 2 and n = 3 shells of He² on collision with H

Stueckelberg oscillations in the charge transfer into the n = 2 and n = 3 shells of He² on collision with H

Simultaneous electron capture and target ion excitation in collisions of C4+ and N5+ on He

Angular distributions for single- and double-electron capture in slowC4+-Ne collisions

Contact Info

Product

Resources

About

State-selective single- and double-electron capture processes in slow C4++He, Ne, Ar and Xe collisions

Cited by 58 publications

References 30 publications

Stueckelberg oscillations in the charge transfer into the n = 2 and n = 3 shells of He2 on collision with H

Stueckelberg oscillations in the charge transfer into the n = 2 and n = 3 shells of He2 on collision with H

Simultaneous electron capture and target ion excitation in collisions of C4+ and N5+ on He

Angular distributions for single- and double-electron capture in slowC4+-Ne collisions

Contact Info

Product

Resources

About

State-selective single- and double-electron capture processes in slow C⁴⁺+He, Ne, Ar and Xe collisions

Stueckelberg oscillations in the charge transfer into the n = 2 and n = 3 shells of He² on collision with H

Stueckelberg oscillations in the charge transfer into the n = 2 and n = 3 shells of He² on collision with H