Charge transfer and association of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msup><mml:mrow><mml:mi>Li</mml:mi></mml:mrow><mml:mo>+</mml:mo></mml:msup></mml:mrow></mml:math>colliding with Na from very low to intermediate energies

Li, T. C.; Qu, Yi; Wu, Yong; Liu, L.; Wang, J. G.; Liebermann, Heinz‐Peter; Buenker, R. J.

doi:10.1103/physreva.91.052702

Cited by 5 publications

(10 citation statements)

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“…where the expressions in round brackets are 3j symbols, 2S+1 L||Q 2(4) || 2S+1 L is the reduced matrix element of the quadrupole (hexadecapole) moment, and α 0 (iω) and α 2 (iω) are the scalar and tensor components of the dynamic electric dipole polarizability at imaginary frequency of the atom in the 2S+1 L state. The electronic structure data, including the potential energy curves for the ground and excited electronic states, transition electric dipole moments, and matrix elements of the spin-orbit coupling have been calculated for several ion-atom systems relevant for ongoing experimental efforts: (Na+Ca) + (Gacesa et al, 2016;Makarov et al, 2003), (Rb+Ba) + (Knecht et al, 2010;Krych et al, 2011), (Li/Na/K/Rb/Cs+Sr) + , (Rb+Ca) + (Belyaev et al, 2012;Tacconi et al, 2011), (Rb+Yb) + (Lamb et al, 2012;McLaughlin et al, 2014;Sayfutyarova et al, 2013), (Li+Yb) + da Silva Jr et al, 2015;Tomza et al, 2015), (Ca/Sr/Ba/Yb+Cr) + (Tomza, 2015), (Li+Be) + (Ghanmi et al, 2017), (Li+Mg) + (ElOualhazi and , (Li+Ca) + (Saito et al, 2017), (Li+Sr) + (Jellali et al, 2016), (Rb+Ca/Sr/Ba/Yb) + (da Silva Jr et al, 2015), (Na/Ka/Rb+Be) + (Ladjimi et al, 2018), (Li+Li) + (Bouchelaghem and Bouledroua, 2014;Bouzouita et al, 2006;Musia l et al, 2015), (Na+Na) + (Berriche, 2013;Bewicz et al, 2017), (K+K) + (Skupin et al, 2017), (Rb+Rb) + (Jraij et al, 2003;Jyothi et al, 2016), (Cs+Cs) + (Jamieson et al, 2009;Jraij et al, 2005), (Li+Na) + (Li et al, 2015;Musia l et al, 2018), (Li+K) + (Berriche et al, 2005;…”

Section: Atomic Ion and Atommentioning

confidence: 99%

“…From (Tomza, 2015). (Li et al, 2015), Na + +Rb (Yan et al, 2014(Yan et al, , 2013, Be + +Li (Rakshit and Deb, 2011), H + +Na/K (Watanabe et al, 2002), H + +D . The non-radiative charge transfer driven by nonadiabatic couplings has been theoretically investigated for Ca + +Rb (Belyaev et al, 2012;Tacconi et al, 2011) and Yb + +Rb (Sayfutyarova et al, 2013).…”

Section: Radiative and Non-radiative Charge Transfermentioning

confidence: 99%

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Cold hybrid ion-atom systems

et al. 2019

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Hybrid systems of laser-cooled trapped ions and ultracold atoms combined in a single experimental setup have recently emerged as a new platform for fundamental research in quantum physics. This paper reviews the theoretical and experimental progress in research on cold hybrid ion-atom systems which aim to combine the best features of the two well-established fields. We provide a broad overview of the theoretical description of ion-atom mixtures and their applications, and report on advances in experiments with ions trapped in Paul or dipole traps overlapped with a cloud of cold atoms, and with ions directly produced in a Bose-Einstein condensate. We start with microscopic models describing the electronic structure, interactions, and collisional physics of ion-atom systems at low and ultralow temperatures, including radiative and non-radiative charge transfer processes and their control with magnetically tunable Feshbach resonances. Then we describe the relevant experimental techniques and the intrinsic properties of hybrid systems. In particular, we discuss the impact of the micromotion of ions in Paul traps on ion-atom hybrid systems. Next, we review recent proposals for using ions immersed in ultracold gases for studying cold collisions, chemistry, many-body physics, quantum simulation, and quantum computation and their experimental realizations. In the last part we focus on the formation of molecular ions via spontaneous radiative association, photoassociation, magnetoassociation, and sympathetic cooling. We discuss applications and prospects of cold molecular ions for cold controlled chemistry and precision spectroscopy.

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Section: Atomic Ion and Atommentioning

confidence: 99%

Section: Radiative and Non-radiative Charge Transfermentioning

confidence: 99%

Cold hybrid ion-atom systems

et al. 2019

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“…The RA has been observed for Rb+Ca + [26,27] and Rb+Ba + [28], and both processes have been investigated for several molecular ion species, including H+(D + ,T + ) and D+T + [29], Rb+Na + [30,31] [36,37]. The experiments and theoretical studies with emphasis on radiative chargeexchange in atom-ion systems have been conducted for Na+Na + [20,38], Na+Ca + [39,40] [44], and others [34,45]. See Ref.…”

Section: Introductionmentioning

confidence: 99%

Production ofNaCa+molecular ions in the ground state from cold atom-ion mixtures by photoassociation via an intermediate state

2016

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We present a theoretical analysis of optical pathways for formation of cold ground state (NaCa) + molecular ions via an intermediate state. The formation schemes are based on ab initio potential energy curves and transition dipole moments calculated using effective-core-potential methods of quantum chemistry. In the proposed approach, starting from a mixture of cold trapped Ca + ions immersed into an ultracold gas of Na atoms, (NaCa) + molecular ions are photoassociated in the excited E 1 Σ + electronic state and allowed to spontaneously decay either to the ground electronic state or an intermediate state from which the population is transferred to the ground state via an additional optical excitation. By analyzing all possible pathways, we find that the efficiency of a two-photon scheme, via either B 1 Σ + or C 1 Σ + potential, is sufficient to produce significant quantities of ground state (NaCa) + molecular ions. A single-step process results in lower formation rates that would require either a high density sample or a very intense photoassociation laser to be viable.

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“…The principal motivation for studying this regime is the fundamental interest in relativistic dynamics and phenomena such as radiative charge transfer and electron-positron pair production. While the former process can also be of importance at very low collision energies [148,155], the latter is, of course, a truly relativistic effect.…”

Section: Uncertainty Assessment For Charge Transfer Collisionsmentioning

confidence: 99%

“…As mentioned above, modern (Q)MOCC methods can deal with many-electron systems in an ab initio fashion, but they have mostly been applied to one-electron transitions, i.e. single electron transfer [154,155]. For truly many-electron problems, such as multiple electron transfer to a highly charged ion, simplifications are unavoidable, which implies that further modeling, usually on the level of the semiclassical TDSE, is necessary.…”

Section: Uncertainty Assessment For Charge Transfer Collisionsmentioning

confidence: 99%

Uncertainty estimates for theoretical atomic and molecular data

Chung¹,

Braams²,

Bartschat³

et al. 2016

J. Phys. D: Appl. Phys.

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Sources of uncertainty are reviewed for calculated atomic and molecular data that are important for plasma modeling: atomic and molecular structure and cross sections for electron-atom, electron-molecule, and heavy particle collisions. We concentrate on model uncertainties due to approximations to the fundamental many-body quantum mechanical equations and we aim to provide guidelines to estimate uncertainties as a routine part of computations of data for structure and scattering.

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Charge transfer and association ofLi+colliding with Na from very low to intermediate energies

Cited by 5 publications

References 50 publications

Cold hybrid ion-atom systems

Cold hybrid ion-atom systems

Production ofNaCa+molecular ions in the ground state from cold atom-ion mixtures by photoassociation via an intermediate state

Uncertainty estimates for theoretical atomic and molecular data

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