Field-Induced Electron-Ion Recombination: A Novel Route towards Neutral (Anti-)matter

Wesdorp, C.; Robicheaux, F.; Noordam, L. D.

doi:10.1103/physrevlett.84.3799

Cited by 49 publications

(14 citation statements)

References 14 publications

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“…2d). This capture through the Stark saddle was recently observed also in an experiment with a trap-like arrangement [12]. This non-radiative, i.e.…”

Section: Dynamics Of Electron and Ion In The Electron Coolermentioning

confidence: 82%

Enhanced electron–ion recombination in ion storage rings

et al. 2006

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We review recent advances in the understanding of the enhanced electronion recombination observed in storage ring experiments. The measured recombination rates show a strong enhancement relative to what the standard radiative recombination rates predict. A transient motional electric field is induced in the merging region of an electron and an ion beam in the electron cooler. This induced field opens an additional pathway for free-bound transitions of electrons. The formed Rydberg states can be radiatively stabilized and contribute to the measured rate. We show that this "field induced recombination" (FIR) explains the gap previously observed between measurements and the standard radiative recombination rate.

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“…2d). This capture through the Stark saddle was recently observed also in an experiment with a trap-like arrangement [12]. This non-radiative, i.e.…”

Section: Dynamics Of Electron and Ion In The Electron Coolermentioning

confidence: 82%

Enhanced electron–ion recombination in ion storage rings

et al. 2006

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“…The resonances we have observed provide a simple but powerful way to enhance the recombination rate for electrons of a chosen energy. This approach, using a pulsed microwave field, complements recently described approaches to enhancing recombination using half-cycle electric field pulses [17,18].…”

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confidence: 74%

Resonant Enhancement of Dielectronic Recombination by a Microwave Field

Klimenko

Gallagher

2000

Phys. Rev. Lett.

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We have observed dielectronic recombination of Ba+ and e(-) from a continuum of finite bandwidth in the presence of microwave fields of frequencies 8.08 and 12.05 GHz and amplitudes of up to 2 V/cm. There are sharp resonant enhancements when the microwave frequency matches the Deltan = 1, 2, and 3 resonances of the intermediate autoionizing Rydberg states, and we attribute the enhancements to resonant microwave Stark l mixing. The microwave field provides a simple and powerful way to enhance the recombination rate for incident electrons of a specific energy.

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“…Other possible mechanisms are laser stimulated recombination (p + e + + hν →H + hν + hν), field assisted recombination where the Coulomb potential of the antiproton is deformed by a pulsed field to catch the positron in analogy to the well known field ionization [24] or the use of positronium (p + (e + e − ) →H + e − ) [25]. Other possible mechanisms are laser stimulated recombination (p + e + + hν →H + hν + hν), field assisted recombination where the Coulomb potential of the antiproton is deformed by a pulsed field to catch the positron in analogy to the well known field ionization [24] or the use of positronium (p + (e + e − ) →H + e − ) [25].…”

Section: Antihydrogen Production and Detectionmentioning

confidence: 99%

ATRAP — on the way to trapped Antihydrogen

Grzonka¹

2005

AIP Conference Proceedings

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The ATRAP experiment at the CERN antiproton decelerator AD aims for a test of the CPT invariance by a high precision comparison of the 1s-2s transition in the hydrogen and the antihydrogen atom.Antihydrogen production is routinely operated at ATRAP [1], [2]. and detailed studies have been performed in order to optimize the production efficiency of useful antihydrogen. The shape parameters of the antiproton and positron clouds [3], the n-state distribution of the produced Rydberg antihydrogen atoms [2] and the antihydrogen velocity [4] have been studied. Furthermore an alternative method of laser controlled antihydrogen production was successfully applied [5].For high precision measurements of atomic transitions cold antihydrogen in the ground state is required which must be trapped due to the low number of available antihydrogen atoms compared to the cold hydrogen beam used for hydrogen spectroscopy. To ensure a reasonable antihydrogen trapping efficiency a magnetic trap has to be superposed the nested Penning trap. First trapping tests of charged particles within a combined magnetic/Penning trap have started at ATRAP.

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Field-Induced Electron-Ion Recombination: A Novel Route towards Neutral (Anti-)matter

Cited by 49 publications

References 14 publications

Enhanced electron–ion recombination in ion storage rings

Enhanced electron–ion recombination in ion storage rings

Resonant Enhancement of Dielectronic Recombination by a Microwave Field

ATRAP — on the way to trapped Antihydrogen

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