An all-optical atom trap as a target for MOTRIMS-like collision experiments
| Autor: | K. L. Romans, Alexander Dorn, Daniel Fischer, V. L. B. de Jesus, N. W. Parris, Sachin Sharma, B. P. Acharya, A. H. N. C. De Silva, B. J. Ramsey |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Physics
Condensed Matter::Quantum Gases Atomic Physics (physics.atom-ph) Scattering FOS: Physical sciences Electron 01 natural sciences Ion Physics - Atomic Physics 010309 optics Recoil Laser cooling 0103 physical sciences Atom Trapping region Physics::Atomic Physics Atomic physics 010306 general physics Spectroscopy |
| Popis: | Momentum-resolved scattering experiments with laser-cooled atomic targets have been performed since almost two decades with MOTRIMS (Magneto-Optical Trap Recoil Ion Momentum Spectroscopy) setups. Compared to experiments with gas-jet targets, MOTRIMS features significantly lower target temperatures allowing for an excellent recoil ion momentum resolution. However, the coincident and momentum-resolved detection of electrons was long rendered impossible due to incompatible magnetic field requirements. Here we report on a novel experimental approach which is based on an all-optical $^6$Li atom trap that -- in contrast to magneto-optical traps -- does not require magnetic field gradients in the trapping region. Atom temperatures of about 2 mK and number densities up to 10$^9$ cm$^{-3}$ make this trap ideally suited for momentum-resolved electron-ion coincidence experiments. The overall configuration of the new trap is very similar to conventional magneto-optical traps. It mainly requires small modifications of laser beam geometries and polarization which makes it easily implementable in other existing MOTRIMS experiments. submitted to Phys. Rev. A |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|