Structure of very heavy few-electron ions—new results from the heavy ion storage ring, ESR

Mokler, P. H.; Stöhlker, Th.; Kozhuharov, C.; Moshammer, R.; Rymuza, P.; Bosch, F.; Kandler, T.

doi:10.1088/0031-8949/1994/t51/004

Cited by 22 publications

(3 citation statements)

References 44 publications

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“…The storage ring ESR is supplied with ions from SIS. The ions from SIS can also be transported to a solid target in the fragment separator (FRS) (Mokler et al 1994). X-rays are produced by collisions with free electrons in the ESR cooler (Beyer et al 1994), by collisions with electrons bound to atoms or molecules of the internal gas jet target of ESR (Beyer et a1 1993), or by collisions with the solid target at the FRS (St6hlker et al 1994b).…”

Section: I308mentioning

confidence: 99%

Atomic and molecular physics with ion storage rings

Larsson

1995

Rep. Prog. Phys.

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Advances in ion-source, accelerator and beam-cooling technology have made it possible to produce high-quality beams of atomic ions in arbitrary charged states as well as molecular and cluster ions that are internally cold. Ion beams of low emittance and uarrow momentum spread are obtained in a new generation of ion storage-cooler rings dedicated to atomic and molecular physics. The long storage times (-5 s< rsdays) allow the study of very slow processes occurring in charged (positive nnd negative) atoms, molecules and clusters. Interactions of ions with electrons and/or photons can be studied by merging the stored ion beam with electron and laser beams. The physics of storage rings spans particles having a charge-to-mass ratio ranging from <0.002 (C& and C&) to 0.4-1.0 ( H ' , D', He2+, . . . , U9'+) and collision processes ranging from <1 meV to -70 GeV. It incorporates, in addition to atomic and molecular physics, tests of fundamental physics theories and atomic physics bordering on nuclear and chemical physics. This exciting development coriceming ion storage rings has taken place within the last five to six years.

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Section: I308mentioning

confidence: 99%

Atomic and molecular physics with ion storage rings

Larsson

1995

Rep. Prog. Phys.

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“…Therefore, their basic atomic characteristics, such as energy levels, transition probabilities, are strongly influenced by relativistic or even QED effects. This often leads to new spectral patterns that are remarkably different from the spectra of light elements [32]. To be more specific, the forbidden radiative transitions (such as M1, M2, E2) are enhanced by 2-6 orders of magnitude [33,34] relative to the allowed E1 transition, which scales approximately as Z 4 .…”

Section: Introductionmentioning

confidence: 99%

X-ray emission associated with radiative recombination for Pb$^{82+}$ ions at threshold energies

Zhu,

Gumberidze,

Over

et al. 2022

Preprint

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For bare lead ions, decelerated to the low beam energy of 10 MeV/u, the x-ray emission associated with radiative recombination (RR) at "cold collision" conditions has been studied at the electron cooler of CRYRING@ESR at GSI-Darmstadt. Utilizing dedicated x-ray detection chambers installed at 0°and 180°observation geometry, we observed for the very first time for stored ions the full x-ray emission spectrum associated with RR under electron cooling conditions. Most remarkably, no line distortion effects due to delayed emission are present in the well resolved spectra, spanning over a wide range of x-ray energies (from about 5 to 100 keV) which enable to identify fine-structure resolved Lyman, Balmer as well as Paschen x-ray lines along with the RR transitions into the K-, L and M-shell of the ions. To compare with theory, an elaborate theoretical model has been applied. By considering the relativistic atomic structure of Pb 81+ , this model is based on a sophisticated computation of the initial population distribution via RR for all atomic levels up to Rydberg states with principal quantum number n = 165 in combination with cascade calculations based on timedependent rate equations. Within the statistical accuracy, the experimental x-ray line emission is in very good agreement with the results of the theoretical model applied. Most notably, this comparison sheds light on the contribution of prompt and delayed X-ray emission (up to 70 ns) to the observed X-ray spectra, originating in particular from Yrast transitions into inner shells.

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“…Beams of ultracold HCIs up to bare uranium (U 92+ ) have been obtained [1]. Single ions were confined in ion traps, ion crystals were observed, and the phase transition from ion cloud to crystal structures was noticed ( [2] and references herein).…”

Section: Introductionmentioning

confidence: 99%

Progress in Physics of Highly Charged Ions: Synopsis of the 12th International Conference on the Physics of Highly Charged Ions

Rudzikas¹

2005

Phys. Scr.

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The 12th International Conference on the Physics of Highly Charged Ions was held in Vilnius (Lithuania) 6–11 September 2004. The papers presented at this conference are analysed and commented upon. The following thematic topics were discussed at the conference: fundamental aspects of the physics of multiply charged atoms, structure and spectroscopy, interactions with photons, plasmas and related processes in strong fields, collisions with electrons, ions, atoms and molecules, interaction with clusters, surfaces and solids, production of highly charged ions, experimental developments and applications. The trends in the development of this field of physics are discussed as well.

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Structure of very heavy few-electron ions—new results from the heavy ion storage ring, ESR

Cited by 22 publications

References 44 publications

Atomic and molecular physics with ion storage rings

Atomic and molecular physics with ion storage rings

X-ray emission associated with radiative recombination for Pb$^{82+}$ ions at threshold energies

Progress in Physics of Highly Charged Ions: Synopsis of the 12th International Conference on the Physics of Highly Charged Ions

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