Projectile excitation to autoionizing states in swift collisions of open-shell He-like ions with helium

A Laoutaris, S Nanos, A Biniskos, S Passalidis… - Physical Review A, 2024‏ - APS
Atomic orbital close-coupling calculations involving three active electrons within a full
configuration interaction formalism are used to investigate projectile excitation. Cross …

Coherent treatment of transfer-excitation processes in swift ion-atom collisions

A Laoutaris, S Nanos, I Madesis, S Passalidis… - Physical Review A, 2022‏ - APS
For more than 40 years since the first ion-atom collision investigations of the two-electron
process of electron transfer with excitation and its resonant and nonresonant features, a …

State-resolved differential cross sections of single-electron capture in swift collisions of ) ions with gas targets

I Madesis, A Laoutaris, S Nanos, S Passalidis… - Physical Review A, 2022‏ - APS
We report on double and single differential cross section measurements of the 1 s 2 s 2 S 2,
1 s 2 s 2 p P±2, and 1 s 2 s 2 p P 4 doubly excited states produced by single-electron …

Pauli shielding and breakdown of spin statistics in multielectron multi-open-shell dynamical atomic systems

I Madesis, A Laoutaris, TJM Zouros, EP Benis… - Physical Review Letters, 2020‏ - APS
We report on C 3+(1 s 2 ℓ 2 ℓ′ L 2 S+ 1)-resolved cross sections of electron capture in
collisions of swift C 4+(1 s 2 s S 3) ions with helium and hydrogen. The study focuses on the …

The allure of high total angular momentum levels in multiply-excited ions

E Träbert - Atoms, 2019‏ - mdpi.com
In the interaction of fast ions with dense matter, the collision frequency is high enough to
facilitate the simultaneous excitation of several electrons. Such multiply-excited few-electron …

Mixed-state ionic beams: An effective tool for collision dynamics investigations

EP Benis, I Madesis, A Laoutaris, S Nanos, TJM Zouros - Atoms, 2018‏ - mdpi.com
The use of mixed-state ionic beams in collision dynamics investigations is examined. Using
high resolution Auger projectile spectroscopy involving He-like (1 s 2 1 S, 1 s 2 s 3, 1 S) …

Experimental determination of the effective solid angle of long-lived projectile states in zero-degree Auger projectile spectroscopy

EP Benis, I Madesis, A Laoutaris, S Nanos… - Journal of Electron …, 2018‏ - Elsevier
In zero-degree Auger projectile spectroscopy (ZAPS), electrons are measured with high
energy resolution at 0° with respect to the beam direction and state-selective cross sections …

Projectile electron spectroscopy and new answers to old questions: Latest results at the new atomic physics beamline in Demokritos, Athens

I Madesis, A Laoutaris, TJM Zouros… - State-of-the-Art …, 2019‏ - World Scientific
Over the last few decades, considerable progress has been made to obtain information on
both the atomic structure and collision dynamics of multiply excited atomic states using high …

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

TJM Zouros, S Nikolaou, I Madesis, A Laoutaris… - Atoms, 2020‏ - mdpi.com
This study focuses on the details of cascade repopulation of doubly excited triply open-shell
C 3+(1 s 2 s 2 p) 4 P and 2 P±states produced in 2–18 MeV collisions of C 4+(1 s 2 s 3 S) …

Fast Ion-Atom Collisions: Electron Spectroscopy of Mixed-State Beams

EP Benis - Advances in Atomic Molecular Collisions, 2024‏ - Springer
The problem of the dynamics of many-body quantum systems under intense and ultra-fast
perturbations is ideally addressed in energetic collisions of few-electron ions with atomic …