In the density matrix formalism, the ensemble of atoms or ions is expressed in terms of
population and alignment of excited levels and the ground state. The population of an …

Interaction of highly charged heavy ions with electrons is one of the most important atomic
processes in high temperature plasmas, including astrophysical plasmas such as solar …

The strengths of individual 1s2l2l'resonances for dielectronic recombination of heliumlike
iron are measured on an electron-beam ion trap using high-resolution x-ray spectroscopy …

We present measurements and calculations of the evolution of the ion-charge-state
distributions in an electron-beam ion trap. Direct measurements of the charge-state …

We report the first measurements of significant polarization of the He-like emission in a laser-
produced plasma. From these measurements we infer a negative second-order (ie, oblate) …

The linear polarization of the 1s2p 1 P 1→ 1 s 2 1 S 0 resonance line, the 1s2p 3 P 1, 2→ 1 s
2 1 S 0 intercombination lines, and the 1s2s 3 S 1→ 1 s 2 1 S 0 forbidden line was …

We experimentally show that the 1 s 2 2 s 2 2 p 1/2-1 s 2 s 2 2 p 1/2 2 transition in Pb 77+
emitted in dielectronic recombination of Pb 78+ is strongly polarized, although it is an …

À l'automne de 1986, le premier piège ionique à faisceau d'électrons, EBIT, entrait en
service comme source de lumière pour la spectroscopie des ions fortement chargés. À …

In this work, we show that x-ray-line polarization spectroscopy can be a powerful diagnostic
to study laser-produced plasmas. Kinetic calculations are compared to experiments …

We have measured the absolute polarization of the 2 p 61 S 0-2 p 5 (2 P 3/2 o) 3s [3/2] 2 o
magnetic quadrupole transition in Ne-like barium, excited in an electron-beam ion trap at a …