Ion-Lithium Collision Dynamics Studied with a Laser-Cooled In-Ring Target

Abstract

We present a novel experimental tool allowing for kinematically complete studies of break-up processes of laser-cooled atoms. This apparatus, the 'MOTReMi,' is a combination of a magneto-optical trap (MOT) and a reaction microscope (ReMi). Operated in an ion-storage ring, the new setup enables us to study the dynamics in swift ion-atom collisions on an unprecedented level of precision and detail. In the inaugural experiment on collisions with 1.5 MeV/amu O(8+)-Li the pure ionization of the valence electron as well as the ionization-excitation of the lithium target was investigated.

Polarization and Interference Effects in Ionization of Li by Ion Impact

“…The set-up has been described in some detail earlier [31] and only the salient points will be repeated here. A pulsed 24 MeV O 8+ beam with a size of about 1 mm passed through a laser-cooled Li target in a magneto-optical trap (MOT), which is part of the MOTReMi apparatus.…”

“…Second, due to a substantially improved resolution compared to all earlier experiments obtaining FDCS, subtle features in the momentum distributions can be examined in unprecedented detail. The experiment became possible using a newly developed MOTReMi apparatus [31], i.e. a combination of a magneto-optical trap with an electron recoil-ion momentum spectrometer.…”

Doubly-differential-cross-section calculations forK-shell-vacancy production in lithium by fastO8+-ion impact

“…In Ref. [4] the SDCSs were normalized using SAE CDW-EIS for the 2s ionization channel for which the multielectron effects were found to be unimportant. The SDCS is obtained by integrating the experimental DDCS for the lowest E e = 2 eV over the transverse momentum transfer.…”

Recoil-ion momentum spectroscopy for cold rubidium in a strong femtosecond laser field

“…The photoassociation of ultracold Rb 2 arXiv:1806.06510v2 [quant-ph] 12 Aug 2018 was thus observed and optimized with the pulse-shaping technique of femtosecond laser pulses [24][25][26]. In addition, MOTRIMS had been employed for studies of photoionization dynamics of lithium (Li) atom in the free electron laser and infrared strong laser field [27][28][29], and of the few-body dynamics of Li atom in the ion collision [30].…”