Pathway of D{sup +} in sequential double ionization of D{sub 2} in an intense laser pulse

Journal Article · Sat May 15 04:00:00 EDT 2010 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.81.053408· OSTI ID:21408845

Vafaee, Mohsen; Shokri, Babak ^[1]

---

1. Laser-Plasma Research Institute, Shahid Beheshti University, G. C., Evin, Tehran 19839-63113 (Iran, Islamic Republic of)

Details of the pathway for the dissociative ionization process of the ground electronic state of aligned D{sub 2}{sup +} produced from the first ionization of D{sub 2} in a short ({approx}100 fs) and intense (4.0x10{sup 14} W cm{sup -2}) 480 nm laser pulse are analyzed and visualized. The initial vibrational state of D{sub 2}{sup +} comes from the vertical transformation of the ground state of D{sub 2}. The initial wave packet in the ground electronic state of D{sub 2}{sup +} is outgoing through a dissociation-ionization channel accompanied by a strong coupling between the 1s{sigma}{sub g} and 2p{sigma}{sub u} electronic states. We show explicitly that the transition from the coupling states 1s{sigma}{sub g} and 2p{sigma}{sub u} to the ionization state is not a direct transition, but takes place through other intermediate states having some dissociative energy that results in a relatively wide internuclear distribution of the ionization state.

• OSTI ID: 21408845
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 5 Vol. 81; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
CHARGED PARTICLES
COUPLING
DEUTERIUM IONS
DISSOCIATION
DISTRIBUTION
ENERGY LEVELS
EXCITED STATES
GROUND STATES
IONIZATION
IONS
LASERS
MATHEMATICAL MODELS
PARTICLE MODELS
PULSES
STRONG-COUPLING MODEL
TRANSFORMATIONS
VIBRATIONAL STATES
WAVE PACKETS