Hannover 2016 – scientific programme

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A: Fachverband Atomphysik

A 21: Interaction with strong or short laser pulses

A 21.7: Poster

Tuesday, March 1, 2016, 16:30–19:00, Empore Lichthof

Spin dynamics in tunneling as well as multiphoton ionization — •Enderalp Yakaboylu, Michael Klaiber, and Karen Z. Hatsagortsyan — Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany

Spin effects in the tunneling regime of strong field ionization of hydrogenlike highly charged ions in linearly as well as circularly polarized laser fields are investigated. The impact of the polarization of a laser field on the spin effects are analyzed. Analytical expressions for spin asymmetries and spin flip probability, depending on the laser’s polarization, are obtained for the photoelectron momentum corresponding to the maximum of tunneling probability [1]. Then, the results are extended to an arbitrary Keldysh parameter in order to reveal the non-adiabatic effects. It is shown that the spin flip is independent from the Keldysh parameter, whereas the spin asymmetries highly depend on it. All the results are comprehensively explained by an intuitive model which incorporates the spin dynamics in tunneling as well as multiphoton ionization.

[1] E. Yakaboylu, M. Klaiber, and K. Z. Hatsagortsyan Phys. Rev. A 91, 063407 (2015).