Formation of molecular ions by radiative association of cold trapped atoms and ions

Abstract

Radiative emission during cold collisions between trapped laser-cooled Rb atoms and alkaline-earth ions (Ca${}^{+}$, Sr${}^{+}$, Ba${}^{+}$) and Yb${}^{+}$, and between Li and Yb${}^{+}$, are studied theoretically, using accurate effective-core-potential based quantum chemistry calculations of potential energy curves and transition dipole moments of the related molecular ions. Radiative association of molecular ions is predicted to occur for all systems with a cross section two to ten times larger than the radiative charge transfer one. Partial and total rate constants are also calculated and compared to available experiments. Narrow shape resonances are expected, which could be detectable at low temperature with an experimental resolution at the limit of the present standards. Vibrational distributions are also calculated, showing that the final molecular ions are not created in their ground state level.

References in corpus (42)

• A trapped single ion inside a Bose-Einstein condensate
• Calculation of accurate permanent dipole moments of the lowest ${}^{1,3}{\Sigma }^{+}$ states of heteronuclear alkali dimers using extended basis sets
• Dynamics of a cold trapped ion in a Bose-Einstein condensate
• Observation of Cold Collisions between Trapped Ions and Trapped Atoms
• Light-assisted ion-neutral reactive processes in the cold regime: radiative molecule formation vs. charge exchange
• Millikelvin Reactive Collisions between Sympathetically-Cooled Molecular Ions and Laser-Cooled Atoms in an Ion-Atom Hybrid Trap
• Micromotion-induced Limit to Atom-Ion Sympathetic Cooling in Paul Traps
• Controlling chemical reactions of a single particle
• Calculations of static dipole polarizabilities of alkali dimers. Prospects for alignment of ultracold molecules
• Electric dipole polarizabilities at imaginary frequencies for the alkali-metal, alkaline-earth, and inert gas atoms
• Sympathetic and swap cooling of trapped ions by cold atoms in a MOT
• Cold atom-ion experiments in hybrid traps
• Quantum theory of ultracold atom-ion collisions
• Cold heteronuclear atom-ion collisions
• Emulating Solid-State Physics with a Hybrid System of Ultracold Ions and Atoms
• A single ion as a three-body reaction center in an ultracold atomic gas
• Dynamic polarizabilities and related properties of clock states of ytterbium atom
• Atom-ion quantum gate
• The ground state of the polar alkali-Strontium molecules: potential energy curve and permanent dipole moment
• Radiative charge transfer lifetime of the excited state of (NaCa)${}^{+}$
• The prospects of forming ultracold molecules in ${}^2\Sigma$ states by magnetoassociation of alkali-metal atoms with Yb
• Ion-neutral chemistry at ultralow energies: Dynamics of reactive collisions between laser-cooled Ca^+ ions and Rb atoms in an ion-atom hybrid trap
• Light-Assisted Cold Chemical Reactions of Barium Ions with Rubidium Atoms
• Evidence of sympathetic cooling of Na+ ions by a Na MOT in a hybrid trap
• Sympathetic cooling of the Ba${}^{+}$ ion by collisions with ultracold Rb atoms: theoretical prospects
• The role of electronic excitation in cold atom-ion chemistry
• A bosonic Josephson junction controlled by a single trapped ion
• Structure of the Alkali-metal-atom-Strontium molecular ions: towards photoassociation and formation of cold molecular ions
• Observation of elastic collisions between lithium atoms and calcium ions
• Quantum Langevin model for exoergic ion-molecule reactions and inelastic processes
• Formation of H${}_3^{-}$ by radiative association of H${}_2$ and H${}^{-}$ in the interstellar medium
• Micromotion in trapped atom-ion systems
• Quantum-defect theory for $-1/r^4$ type of interactions
• Ion induced density bubble in a strongly correlated one dimensional gas
• Quantum dynamics of an atomic double-well system interacting with a trapped ion
• Ground and excited state properties of the polar and paramagnetic RbSr molecule: a comparative study
• Measurement of collisions between rubidium atoms and optically dark rubidium ions
• Charge transfer in the cold Yb${}^{+}$ + Rb collisions
• Combined ion and atom trap for low temperature ion-atom physics
• Structure and interactions of ultracold Yb ions and Rb atoms
• Cold ion-atom chemistry driven by spontaneous radiative relaxation: a case study for the formation of the YbCa^{+} molecular ion
• Hybrid quantum systems of atoms and ions

Cited by in corpus (27)

• Cold hybrid ion-atom systems
• Dynamics of a ground-state cooled ion colliding with ultra-cold atoms
• Long-range vs. short-range effects in cold molecular ion-neutral collisions: Charge exchange of Rb with N${}_2^{+}$ and O${}_2^{+}$
• Observation of collisions between cold Li atoms and Yb${}^{+}$ ions
• Life and death of a cold BaRb${}^{+}$ molecule inside an ultracold cloud of Rb atoms
• Characterization of charge-exchange collisions between ultracold ${}^6\mathrm{Li}$ atoms and ${}^{40}\mathrm{C}{\mathrm{a}}^{+}$ ions
• Cold trapped molecular ions and hybrid platforms for ions and neutral particles
• Interactions and chemical reactions in ionic alkali-metal and alkaline-earth-metal diatomic $A{B}^{+}$ and triatomic $A_2{B}^{+}$ systems
• Reactive two-body and three-body collisions of Ba${}^{+}$ in an ultracold Rb gas
• Photodissociation of trapped Rb${}_2^{+}$ : Implications for simultaneous trapping of atoms and molecular ions
• Production of NaCa${}^{+}$ molecular ions in the ground state from cold atom-ion mixtures by photoassociation via an intermediate state
• Ab initio electronic structure and prospects for the formation of ultracold calcium--alkali-metal-atom molecular ions
• Controlling the nature of a charged impurity in a bath of Feshbach dimers
• Ultracold magnetically tunable interactions without radiative charge transfer losses between Ca${}^{+}$, Sr${}^{+}$, Ba${}^{+}$, and Yb${}^{+}$ ions and Cr atoms
• Effect of ion-trap parameters on energy distributions of ultra-cold atom-ion mixtures
• High-energy-resolution measurement of ultracold atom-ion collisional cross section
• Spectroscopic properties of the molecular ions BeX^+ (X=Na, K, Rb): Forming cold molecular ions from an ion-atom mixture by stimulated Raman adiabatic process
• Proposal for laser-cooling of rare-earth ions
• Electric field analysis in a cold-ion source using Stark spectroscopy of Rydberg atoms
• Rotational state-changing collisions between N${}_2^{+}$ and Rb at low energies
• Strong angular-momentum mixing in ultracold atom-ion excitation-exchange
• Ion loss events in a cold Rb-Ca${}^{+}$ hybrid trap: photodissociation, black-body radiation and non-radiative charge exchange
• High-resolution collision energy control through ion position modulation in atom-ion hybrid systems
• Charge transfer in ultracold gases via Feshbach resonances
• Minimizing rf-induced excess micromotion of a trapped ion with the help of ultracold atoms
• Vibrational quenching of cold molecular ions immersed in their parent gas
• Interactions and charge transfer dynamics of an Al${}^{+}$ ion immersed in ultracold Rb and Sr atoms