N₂⁺(²Σ_g) and Rb(²S) in a hybrid trap: modeling ion losses from radiative association paths

Abstract

N2+ + Rb → (N2Rb)+(v) + ħω radiative association: partial vibronic cross-sections corresponding to the R8 transition as a function of the emitted photon energies and wavelengths in the ultraviolet region.

Non-destructive State Detection and Spectroscopy of Single Molecules

“…2. [27] The duration of a narrow 729 nm laser pulse, t 729 , in resonance with a motional sideband on the Ca + (4s) 2 S 1/2 →(3d) 2 D 5/2 transition was scanned in order to induce present experiments, we use the 14 N + 2 molecular ion and the 40 Ca + atomic ion as prototypical examples. However, the methods presented here are general and applicable to a broad range of systems.…”

“…[36][37][38] Such weak transitions exhibit extremely narrow natural linewidths and consequently very long state lifetimes. These properties render N + 2 an ideal test-bed for precision spectroscopic studies, [37,38] for chemical reactions and collision studies in specific internal states, [16,[39][40][41] for the realization of mid-IR frequency standards and molecular clocks, [37,42] for tests of possible temporal variations in the electron-to-proton mass ratio [43] and for the implementation of molecular qubits used in quantum information and computation applications. [37]…”

“…1. Illustration of the present method for the non-destructive quantum-state detection of single 14 N + 2 molecular ions with single 40 Ca + atomic ions. Both species (molecule in blue and atom in purple) were simultaneously trapped in an ion trap (grey rods).…”

Rotational-state-changing collisions between N2+ and Rb at low energies

“…In this scenario, charge exchange will likely be the kinetically dominating process, as in N + 2 + Rb and most probably also O + 2 + Rb [24]. Rotationally inelastic collisions, as studied here, and competing reactive processes such as radiative association [26] are likely to exhibit considerably smaller rates. Of course, this does not preclude the possibility of other fast chemical processes which may occur depending on the specific system [23].…”

“…The potential-energy surface (PES) used in the present scattering calculations is the same as in our previous study [26], where details on the relevant computational methods can be found. Fig.…”