Cold Heteronuclear Atom-Ion Collisions

Zipkes, Christoph; Palzer, Stefan; Ratschbacher, Lothar; Sias, Carlo; Köhl, M.

doi:10.1103/physrevlett.105.133201

Cited by 126 publications

(202 citation statements)

References 27 publications

Supporting

Mentioning

190

Contrasting

Order By: Relevance

“…The inelastic collisions can result in either charge exchange or molecular ion formation and, in order to determine a detailed mechanism, mass spectrometry [5,15,16] of the reaction products is performed following the inelastic collisions. In these trials, a pure Ca + ion cloud consisting of ∼400 ions is mixed with Li atoms for 4 s. Subsequently, an oscillating electric field is applied to one of the ion trap electrodes to excite the radial motions of the ions.…”

Section: Resultsmentioning

confidence: 99%

Charge-exchange collisions between ultracold fermionic lithium atoms and calcium ions

et al. 2015

View full text Add to dashboard Cite

Charge exchange collisions between ultracold fermionic 6 Li atoms and 40 Ca + ions are observed in the mK temperature range. The reaction product of the charge exchange collision is identified via mass spectrometry during which the motion of the ions is excited parametrically. The crosssections of the charge exchange collisions between 6 Li atoms in the ground state and 40 Ca + ions in the ground and metastable excited states are determined. Investigation of the inelastic collision characteristics in the atom-ion mixture is an important step toward ultracold chemistry based on ultracold atoms and ions.

show abstract

Section: Resultsmentioning

confidence: 99%

Charge-exchange collisions between ultracold fermionic lithium atoms and calcium ions

et al. 2015

View full text Add to dashboard Cite

show abstract

“…Hybrid ion-atom systems are of great interest [7] since these are inherently strongly interacting systems with a longer-range potential and inelastic processes can be studied. Recently, these systems have been explored considering two-body collisions, in which both collision partners are translationally cold [8], and on the many-body level [9], where the sympathetic cooling of the ion with ultracold atoms was observed. The study of these systems in the quantum regime can be applied to hybrid atom-ion devices [10] and in addressing fundamental many-body effects of ionic impurities, * hlamb01@qub.ac.uk.…”

Section: Introductionmentioning

confidence: 99%

“…In recent experiments [8,9,18], a single trapped ion of 174 Yb + in a Paul trap was immersed in a condensate of neutral 87 Rb atoms confined in a magneto-optical trap. A study of charge-transfer cross sections showed that the simple classical Langevin model was inadequate to explain the reaction rates [9].…”

Section: Introductionmentioning

confidence: 99%

Structure and interactions of ultracold Yb ions and Rb atoms

et al. 2012

View full text Add to dashboard Cite

In order to study ultracold charge-transfer processes in hybrid atom-ion traps, we have mapped out the potential-energy curves and molecular parameters for several low-lying states of the Rb, Yb+ system. We employ both a multireference configuration interaction and a full configuration interaction (FCI) approach. Turning points, crossing points, potential minima, and spectroscopic molecular constants are obtained for the lowest five molecular states. Long-range parameters, including the dispersion coefficients, are estimated from our ab initio data. The separated-atom ionization potentials and atomic polarizability of the ytterbium atom (alpha(d) = 128.4 atomic units) are in good agreement with experiment and previous calculations. We present some dynamical calculations for (adiabatic) scattering lengths for the two lowest (Yb, Rb+) channels that were carried out in our work. However, we find that the pseudopotential approximation is rather limited in validity and only applies to nK temperatures. The adiabatic scattering lengths for both the triplet and singlet channels indicate that both are large and negative in the FCI approximation

show abstract

“…Renewed interest in QDT for −C 4 /r 4 polarization potential has arisen with the emergence of cold ion-atom [11][12][13][14][15][16][17][18][19][20] and ion-molecule interactions and reactions [21][22][23][24][25][26]. For such heavier systems, the QDT takes on a different magnitude of importance for three primary reasons.…”

Section: Introductionmentioning

confidence: 99%

Quantum-defect theory for−1/r4-type interactions

Gao

2013

Phys. Rev. A

View full text Add to dashboard Cite

We present a quantum-defect theory (QDT) for the −1/r 4 type of long-range potential, as a foundation for a systematic understanding of charge-neutral quantum systems such as ion-atom, ionmolecule, electron-atom, and positron-atom interactions. The theory incorporates both conceptual and mathematical advances since earlier formulations of the theory. It also includes more detailed discussions of the concept of resonance spectrum and its representations, universal properties in charge-neutral quantum systems, and the QDT description of scattering resonances that is applicable to any −1/r n potential with n > 2.

show abstract

Cold Heteronuclear Atom-Ion Collisions

Cited by 126 publications

References 27 publications

Charge-exchange collisions between ultracold fermionic lithium atoms and calcium ions

Charge-exchange collisions between ultracold fermionic lithium atoms and calcium ions

Structure and interactions of ultracold Yb ions and Rb atoms

Quantum-defect theory for−1/r4-type interactions

Contact Info

Product

Resources

About