Spin-dependent rescattering in strong-field ionization of helium. (28th February 2017)

• Record Type: Journal Article
• Authors: Zille, D; Seipt, D; Möller, M; Fritzsche, S; Gräfe, S; Müller, C; Paulus, G G
• Is Part Of: Journal of physics. Volume 50:Number 6(2017:Mar. 15)
• Publication Date: 2017-02-28
• Subjects: metastable helium -- spin dynamics -- semi-classical Monte Carlo -- 3 step model -- rescattering -- strong-field ionization; Atoms -- Periodicals; Molecules -- Periodicals; Optics -- Periodicals; Nuclear physics -- Periodicals; 539.6
• DOI: 10.1088/1361-6455/aa5db1
• Languages: English
• ISSNs: 0953-4075

Abstract

Abstract: We investigate the influence of singlet and triplet spin states on rescattered photoelectrons in strong-field ionization of excited helium. Choosing either a symmetric or antisymmetric spatial wave function as the initial state results in different scattering cross sections for the 1 s 2 s 1 S and 3 S states. These cross sections are used in the semi-classical model of strong-field ionization. Our investigations show that the photoelectron momentum distributions of rescattered electrons exhibit a significant dependence on the relative spin state of the projectile and the bound electron which should be observable in experiments. The proposed experimental approach can be understood as a testbed for probing the spin dynamics of electrons during strong-field ionization and the presented results as a baseline for their identification.