Computed lifetimes of metastable states of CO2+

Abstract:We study the evolution of nuclear wave packets launched in molecular nitrogen, oxygen and carbon monoxide by intense 8fs infrared pulses.We use velocity map imaging to measure the momentum of the ion fragments when these wave packets are interrogated by a second such pulse after a variable time delay. Both quasi-bound and dissociative wave packets are observed. For the former, measurements of bound-state oscillations are used to identify the participating states and in some cases extract properties of the relevant potential energy surfaces. Vibrational structure is resolved in both energy and oscillation-frequency for the cations of oxygen and carbon monoxide, displaying the same quantum wave packet motion in both energy and time domains. In addition, vibrational structure is seen in the dication of carbon 2 monoxide in a situation where the energy resolution by itself is inadequate to resolve the structure.

show abstract

“…A number of other dissociative states may contribute as well in this region [28,44] . [30,31,[40][41][42]. Fig.…”

Section: Fig 8 Ker Spectrum For the Observation Of C + Ions From Comentioning

confidence: 99%

Following dynamic nuclear wave packets in N2,O2, and CO with few-cycle infrared pulses

Magrakvelidze

Bocharova

et al. 2011

Phys. Rev. A

View full text Add to dashboard Cite

show abstract

“…2. Unlike in the case of CO 2+ , where the s-o curves are smooth, 22 all four s-o interactions of the 4 ⌸ state with the remaining states exhibit abrupt changes at about R = 2.1 bohrs. This is obviously caused by an avoided crossing of the two lowest 4 ⌸ states in this region.…”

Section: Resultsmentioning

confidence: 64%

“…[18][19][20][21] In our previous study, 22 we used the stabilization, complex-scaling, and log-amplitude-phase ͑LA͒ methods to determine the spin-orbit induced lifetimes of 13 vibronic levels of CO 2+ . The first step of that study involved the calculation of the potential energy curves and spin-orbit ͑S-O͒ coupling functions using highly correlated wave functions.…”

Section: Introductionmentioning

confidence: 99%

Computed lifetimes of metastable states of the NO2+ dication

Baková

Fišer

Šedivcová-Uhlíková

et al. 2008

The Journal of Chemical Physics

Self Cite

View full text Add to dashboard Cite

Based on the ab initio potential energy, spin-orbit coupling, electronic transition dipole moment, and radial nonadiabatic coupling functions, the energy level positions, lifetimes, and radiative transition probabilities (Einstein A coefficients) have been determined for the lowest electronic states of NO2+ using the log-amplitude-phase, stabilization, and complex-scaling methods. The calculated characteristics are in reasonable agreement to the available experimental data, thus, evidencing the reliability of the theoretical predictions for the characteristics unobserved to date. With the exception of the v

show abstract

“…As demonstrated in Ref. [29], CO 2+ with KER (C+,O+) above 10.2 eV dissociates on the purely repulsive curve of 3 − [32,33] for the events in the direct breakup region. This potential-energy curve deviates from the pure Coulomb potential curve 1/R at short internuclear distance [see Fig.…”

Section: Geometry Probingmentioning

confidence: 92%

Simultaneous probing of geometry and electronic orbital of ArCO by Coulomb-explosion imaging and angle-dependent tunneling rates

et al. 2013

View full text Add to dashboard Cite

We simultaneously probe the molecular structure and the symmetry of valence electronic orbital of an anisotropic atomic-molecular complex of ArCO by tracing its three-body Coulomb breakup following triple ionization in a phase-controlled elliptically polarized two-color pulse. The geometry of ArCO is found to be tilted T shaped, where the angle between the covalent and van der Waals bonds is 65 • with oxygen pointing towards argon. The asymmetric profiles of the outmost orbitals from the CO site are probed by directional dissociation of the contained CO subunit as a function of the laser phase. Our results clearly image the asymmetric geometry of ArCO and thus reveal the anisotropic interaction between a rare-gas atom and a heteronuclear diatomic molecule.

show abstract

Computed lifetimes of metastable states of CO2+

Cited by 35 publications

References 43 publications

Following dynamic nuclear wave packets in N2,O2, and CO with few-cycle infrared pulses

Following dynamic nuclear wave packets in N2,O2, and CO with few-cycle infrared pulses

Computed lifetimes of metastable states of the NO2+ dication

Simultaneous probing of geometry and electronic orbital of ArCO by Coulomb-explosion imaging and angle-dependent tunneling rates

Contact Info

Product

Resources

About