Photo-Ionization of Polarized Lithium Atoms Out of an All-Optical Atom Trap: A Complete Experiment
An all-optical, near-resonant laser atom trap is used to prepare an electronically excited and polarized gas target at mK-temperature for complete photo-ionization studies. As a proof-of-principal experiment, lithium atoms in the 22P3/2(mℓ = +1) state are ionized by a 266 nm laser source, and emitted electrons and Li+ ions are momentum analyzed in a COLTRIMS spectrometer. The excellent resolution achieved in the present experiment allows not only to extract the relative phase and amplitude of all partial waves contributing to the final state, it also enables to characterize the experiment regarding target and spectrometer properties. Photo-electron angular distributions are measured for five different laser polarizations and described in a one-electron approximation with excellent agreement.
F. Thini et al., "Photo-Ionization of Polarized Lithium Atoms Out of an All-Optical Atom Trap: A Complete Experiment," Journal of Physics B: Atomic, Molecular and Optical Physics, vol. 53, no. 9, Institute of Physics - IOP Publishing, May 2020.
The definitive version is available at https://doi.org/10.1088/1361-6455/ab7671
Keywords and Phrases
Cooling And Trapping; Momentum Spectroscopy; Photo-Ionization
International Standard Serial Number (ISSN)
Article - Journal
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17 May 2020