Pathway of D${}^{+}$ in Sequential Double Ionization of D${}_2$ in an Intense Laser Pulse

Abstract

We show the details of the pathway for dissociative ionization process of ground electronic state of aligned D${}_2^{+}$ due to first ionization of D${}_2$ in short ($\sim$100 fs) and intense ($4.0\times 10^{14}$ W cm${}^{-2}$) 480 nm laser pulses. The initial vibrational state of D${}_2^{+}$ comes from the vertical transformation of the ground state of D${}_2$. The initial wavepacket in the ground electronic state of D${}_2^{+}$ is outgoing through dissociation-ionization channel accompanied by a strong coupling between $1s{\sigma }_g$ and $2p{\sigma }_u$ electronic states. We show explicitly that the transition from the coupling states $1s{\sigma }_g$ and $2p{\sigma }_u$ to the ionization state is not a direct transition but takes place through other intermediate states with some dissociation energy that results in the internuclear distribution of the ionization to move considerably to larger internuclear distances.

7 pages, 7 figures

References in corpus (3)

• Dynamic tunnelling ionization of $H_2^{+}$ in intense fields
• H2 Double Ionization with Few-Cycle Laser Pulses
• Nuclear kinetic energy spectra of D_2^+ in intense laser field: Beyond Born Oppenheimer approximation

Cited by in corpus (2)

• Nuclear classical dynamics of H${}_2$ in intense laser field
• Precise Calculation of Single and Double Ionization of Hydrogen Molecule in Intense Laser Pulses