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
Divisions
CHEMISTRY
Funders
Universiti Malaya
Publication Title
International Journal of Quantum Chemistry
Publisher
Wiley
Publisher Location
111 RIVER ST, HOBOKEN 07030-5774, NJ USA