Projectile-Auger-electron spectra of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi mathvariant="normal">C</mml:mi></mml:mrow><mml:mrow><mml:mn>3</mml:mn><mml:mo>+</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>following 12-MeV collisions with He targets

Ef, Deveney; Qc, Kessel; Rj, Fuller; Mp, Reaves; Ra, Bellantone; Sm, Shafroth; Jones, N. L.

doi:10.1103/physreva.48.2926

Cited by 2 publications

(1 citation statement)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In addition, various energy level calculations, Auger yields and line identifications of Auger transitions for Li-like carbon states have also been presented within the field of high resolution Auger projectile spectroscopy in ion-atom collisions by Schneider et al [24,58], Mann [59], Mack and Niehaus [44], and Deveney et al [60]. In all these publications, radiative transitions to the singly excited states 1s 2 nl are only reported.…”

Section: Decay Rates and Radiative Branching Ratios For C 3+ [(1s2s 3mentioning

confidence: 99%

Radiative Cascade Repopulation of 1s2s2p 4P States Formed by Single Electron Capture in 2–18 MeV Collisions of C4+ (1s2s 3S) with He

Zouros

Nikolaou

Madesis

et al. 2020

Atoms

View full text Add to dashboard Cite

This study focuses on the details of cascade repopulation of doubly excited triply open-shell C3+(1s2s2p)4P and 2P± states produced in 2–18 MeV collisions of C4+(1s2s3S) with He. Such cascade calculations are necessary for the correct determination of the ratio R of their cross sections, used as a measure of spin statistics [Madesis et al. PRL 124 (2020) 113401]. Here, we present the details of our cascade calculations within a new matrix formulation based on the well-known diagrammatic cascade approach [Curtis, Am. J. Phys. 36 (1968) 1123], extended to also include Auger depopulation. The initial populations of the 1s2snℓ4L and 1s2snℓ2L levels included in our analysis are obtained from the direct nℓ single electron capture (SEC) cross sections, calculated using the novel three-electron close-coupling (3eAOCC) approach. All relevant radiative branching ratios (RBR) for n≤4 were computed using the COWAN code. While doublet RBRs are found to be very small, quartet RBRs are found to be large, indicating cascade feeding to be important only for quartets, consistent with previous findings. Calculations including up to third order cascades, extended to n→∞ using an n−3 SEC model, showed a ∼60% increase of the 1s2s2p4P populations due to cascades, resulting, for the first time, in R values in good overall agreement with experiment.

show abstract

Section: Decay Rates and Radiative Branching Ratios For C 3+ [(1s2s 3mentioning

confidence: 99%

Radiative Cascade Repopulation of 1s2s2p 4P States Formed by Single Electron Capture in 2–18 MeV Collisions of C4+ (1s2s 3S) with He

Zouros

Nikolaou

Madesis

et al. 2020

Atoms

View full text Add to dashboard Cite

show abstract

Rydberg series for autoionization states of Li-like ions

Safronova¹,

Shlyaptseva²,

Golovkin³

1995

Phys. Scr.

View full text Add to dashboard Cite

The energy of Li-like states ls21nl' regarding to high Rydberg series (n = 2-10) were calculated for ions with a nuclear charge Z = 5-54 by using a perturbation theory method (Z-expansion). Relativistic effects were taken into account by the Breit-Pauli operators. The asymptotic dependence on n for the energy matrix of the ls21nl' states was discussed. The intermediate coupling coefficients obtained after diagonalization of energy matrices were studied. It was found that the values of these coefficients are in a strong dependence on the values of n and Z due to redistribution between the contribution of relativistic and correlation effects. It should be noted that the other atomic characteristics such as radiative and nonradiative transition probabilities, branching ratios have a non-monotonous behaviour regarding to the values of Z and n with maxima and minima. Auger and transition energies were compared with other theoretical results and experimental data concerning the ls2lnl'LSJ (n = 2-7) states for different ions with Z = 6, 7, 8, 16, 17 and 18.

show abstract

Projectile-Auger-electron spectra ofC3+following 12-MeV collisions with He targets

Cited by 2 publications

References 15 publications

Radiative Cascade Repopulation of 1s2s2p 4P States Formed by Single Electron Capture in 2–18 MeV Collisions of C4+ (1s2s 3S) with He

Radiative Cascade Repopulation of 1s2s2p 4P States Formed by Single Electron Capture in 2–18 MeV Collisions of C4+ (1s2s 3S) with He

Rydberg series for autoionization states of Li-like ions

Contact Info

Product

Resources

About