Strong-field coherent control of the proton momentum distribution arising from the n-photon (n=1,2,3) field-dressed adiabatic potentials of H2+

Document Type

Article

Publication Date

8-1-2023

Abstract

A systematic directionality coherent control of total proton momentum distributions in the dissociative-ionization of H-2(+) subjected to a strong field of six-cycle laser pulses in a full range of carrier-envelope phase theta is studied by solving a non-Born-Oppenheimer time-dependent Schrodinger equation numerically. The trend of distributions involves insightful investigation into the spatial-temporal overlap between nuclear wave packets evolving on the coupled field-dressed electronic potentials of H-2(+) associated with the n-photon potential crossings. This leads to new quantum images for the nonlinear nonperturbative interaction of H-2(+) with a strong field. It turns out that the symmetry of the theta-dependent momentum distribution begins to break after undergoing interaction with one-photon field-dressed potentials. At this point, the most probable proton momentum distribution tends to move in a forward direction indicating also that the three-photon field-dressed potentials strongly gov-ern the dissociative-ionization pathway.

Keywords

adiabatic potential, coherent control, laser pulse, proton, Schrodinger equation, strong field

Publication Title

International Journal of Quantum Chemistry

Divisions

CHEMISTRY

Funders

Universiti Malaya

Publisher

Wiley

Publisher Location

111 RIVER ST, HOBOKEN 07030-5774, NJ USA

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