"Strong field atomic ionization with linear and circular polarized light: Spectra, Cusps and Time delay"

Who: Anatoli Kheifets. Australian National University, Canberra, Australia

Place: Donostia International Physics Center (DIPC). Paseo Manuel de Lardizabal, 4, Donostia

Date: Friday, 24 April 2015, 12:00

We made significant progress in understanding strong field atomic ionization with short
and intense electromagnetic pulses of various degree of polarization. The photoelectron
spectra reveal peculiarity of strong field ionization in multi-photon and tunneling regimes
and display a Coulomb singularity which can be removed by switching from linear to
circular polarization. The time delay studies provide rigorous tests to various attosecond
measuring devices.

References: Spectra and Cusps

I.A. Ivanov et al., Transverse electron momentum distribution in tunneling and over the
barrier ionization regimes (in preparation)

Li Zhang et al., Attosecond spatial control of electron wave packet emission dynamics
Phys. Rev. A 90, 061401(R) (2014)

A. S. Kheifets and I. A. Ivanov
Transverse electron momentum distribution in a pump-probe sequential double ionization
Phys. Rev. A 90, 033404 (2014)

I. A. Ivanov, Transverse photoelectron-momentum distribution for atomic ionization
driven by a laser pulse with varying ellipticity
Phys. Rev. A 90, 013418 (2014).

References: time delay

L. Torlina et al., Interpreting Attoclock Measurements of Tunnelling Times
Nature Physics (submitted) arXiv:1402.5620

I. A. Ivanov and A. S. Kheifets
Strong-field ionization of He by elliptically polarized light in attoclock configuration
Phys. Rev. A 89, 021402(R) (2014)

D. Guènot et al., Measurements of relative photoemission time delays in noble gas atoms
J. Phys. B 47, 245602 (2014)

Caryn Palatchi et al., Atomic Delay in Helium, Neon, Argon and Krypton
J. Phys. B 47, 245003 (2014)

E. P. Månsson et al., Double Ionization of Xenon Probed on the Attosecond Time Scale
Nature Physics 292, 1689 (2014)

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