Results 31 to 40 of about 3,571,432 (328)

Guest Editor’s Notes on the “Atoms” Special Issue on “Perspectives of Atomic Physics with Trapped Highly Charged Ions”

open access: yesAtoms, 2016
The study of highly charged ions (HCI) was pursued first at Uppsala (Sweden), by Edlén and Tyrén in the 1930s. Their work led to the recognition that the solar corona is populated by such ions, an insight which forced massive paradigm changes in solar ...
Elmar Träbert
doaj   +1 more source

Pattern Formation with Trapped Ions

open access: yesPhysical Review Letters, 2011
4 pages ...
Lee, Tony E., Cross, M. C.
openaire   +5 more sources

Correcting symmetry imperfections in linear multipole traps [PDF]

open access: yes, 2018
Multipole radio-frequency traps are central to collisional experiments in cryogenic environments. They also offer possibilities to generate new type of ion crystals topologies and in particular the potential to create infinite 1D/2D structures: ion rings
Champenois, C.   +4 more
core   +4 more sources

Ion Trapping and Acceleration at Dipolarization Fronts: High‐Resolution MHD and Test‐Particle Simulations

open access: yesJournal of Geophysical Research: Space Physics, 2018
Much of plasma heating and transport from the magnetotail into the inner magnetosphere occurs in the form of mesoscale discrete injections associated with sharp dipolarizations of magnetic field (dipolarization fronts).
A. Ukhorskiy   +5 more
semanticscholar   +1 more source

Energetics of positron states trapped at vacancies in solids [PDF]

open access: yes, 2007
We report a computational first-principles study of positron trapping at vacancy defects in metals and semiconductors. The main emphasis is on the energetics of the trapping process including the interplay between the positron state and the defect's ...
G. Kresse   +7 more
core   +2 more sources

Trapped ions in Rydberg-dressed atomic gases [PDF]

open access: yes, 2017
We theoretically study trapped ions that are immersed in an ultracold gas of Rydberg-dressed atoms. By off-resonant coupling on a dipole-forbidden transition, the adiabatic atom-ion potential can be made repulsive.
Ewald, N.   +5 more
core   +3 more sources

Beam-ion instability and its mitigation with feedback system

open access: yesPhysical Review Accelerators and Beams, 2020
The beam-ion interaction is one of the potential limitations of beam performance in ultralow-emittance electron light sources. Conventionally, the beam-ion instability is attributed to two effects: the ion-trapping effect and fast ion effect, which are ...
Chao Li   +3 more
doaj   +1 more source

Nonadiabatic electron gun at an electron beam ion source: Commissioning results and charge breeding investigations

open access: yesPhysical Review Accelerators and Beams, 2022
The electron gun of the REXEBIS charge breeder at the REX/HIE-ISOLDE facility at CERN has been upgraded from a standard magneto-immersed type to a gun using a nonadiabatic magnetic element.
H. Pahl   +4 more
doaj   +1 more source

Fast thermometry for trapped ions using dark resonances

open access: yesNew Journal of Physics, 2015
We experimentally demonstrate a method to determine the temperature of trapped ions which is suitable for monitoring fast thermalization processes.
J Roßnagel   +3 more
doaj   +1 more source

Instability Heating of Sympathetically-Cooled Ions in a Linear Paul Trap [PDF]

open access: yes, 2002
Sympathetic laser cooling of ions stored within a linear-geometry, radio frequency, electric-quadrupole trap has been investigated using computational and theoretical techniques. The simulation, which allows 5 sample ions to interact with 35 laser-cooled
A. C. Truscott   +18 more
core   +2 more sources

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