Photo-Ionization of Polarized Lithium Atoms Out of an All-Optical Atom Trap: A Complete Experiment

Abstract

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.

Department(s)

Physics

Keywords and Phrases

Cooling And Trapping; Momentum Spectroscopy; Photo-Ionization

International Standard Serial Number (ISSN)

0953-4075; 1361-6455

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2020 Institute of Physics - IOP Publishing, All rights reserved.

Publication Date

17 May 2020

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