Journal ArticleDOI
Nonadiabatic molecular dynamics simulation of ultrafast pump-probe experiments on I2 in solid rare gases
Victor S. Batista,David F. Coker +1 more
TLDR
In this article, a semi-empirical diatomics-in-molecules (DIM) excited state electronic structure technique is used to compute the ion pair states of the I2-rare gas crystal system and use these states together with a model of the configurational dependence of the electronic dipole operator matrix elements to calculate the time resolved probe absorption signals in these pump-probe experiments using a simple golden rule result.Abstract:
Recent experimental studies of both A and B state photoexcitation of I2 and the ensuing many-body dynamics in rare gas matrices by Apkarian and co-workers are simulated using the methods we presented in an earlier work combining nonadiabatic molecular dynamics with semiempirical diatomics-in-molecules (DIM) excited state electronic structure techniques. We extend our DIM methods to compute the ion pair states of the I2-rare gas crystal system and use these states together with a model of the configurational dependence of the electronic dipole operator matrix elements to calculate the time resolved probe absorption signals in these pump - probe experiments using a simple golden rule result. Our computed signals are in remarkable agreement with experiments and we use our calculations to provide a detailed microscopic analysis of the channels to predissociation and recombination underlying these experiments.read more
Citations
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Journal ArticleDOI
Molecular Photodynamics in Rare Gas Solids.
TL;DR: Photon-Induced Harpooning, Channeled Migration, and Forced and Delayed Cage Exit 1503 A. Cl2 in XesDissociation without cage Exit 1502 IX.
Journal ArticleDOI
Chemical reaction dynamics beyond the born-oppenheimer approximation
TL;DR: The experiments reviewed here investigate how the breakdown of the Born-Oppenheimer approximation at a barrier along an adiabatic reaction coordinate can alter the dynamics of and the expected branching between molecular dissociation pathways.
Journal ArticleDOI
Quantized Hamilton dynamics
TL;DR: In this article, the Hamilton approach to classical dynamics is extended to incorporate quantum effects and a specific dynamics algorithm is presented and tested against model applications that exhibit tunneling and zero point motion effects.
Journal ArticleDOI
Femtosecond photoelectron spectroscopy of the I2− anion: A semiclassical molecular dynamics simulation method
Victor S. Batista,Martin T. Zanni,B. Jefferys Greenblatt,Daniel M. Neumark,William H. Miller +4 more
TL;DR: In this article, a new semiclassical method for simulating femtosecond pump-probe photoelectron spectroscopy was proposed, and its implementation was implemented to study the excited state photodissociation dynamics of the I 2 anion.
Journal ArticleDOI
Nonadiabatic molecular dynamics simulations of the photofragmentation and geminate recombination dynamics in size-selected I2−⋅Arn cluster ions
V. S. Batista,David F. Coker +1 more
TL;DR: In this article, the photodissociation, geminate recombination and relaxation dynamics in size-selected I2−⋅Arn cluster ions using a coupled quantum-classical molecular dynamics method and a model Hamiltonian gained from diatomics-in-ionic systems were investigated.
References
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Journal ArticleDOI
Molecular dynamics with electronic transitions
TL;DR: In this article, a method for carrying out molecular dynamics simulations of processes that involve electronic transitions is proposed, where the time dependent electronic Schrodinger equation is solved self-consistently with the classical mechanical equations of motion of the atoms.
Journal ArticleDOI
Theory of Electric Polarization
Journal ArticleDOI
Proton transfer in solution: Molecular dynamics with quantum transitions
TL;DR: In this article, the authors apply the surface-hopping method to proton transfer in solution, where the quantum particle is an atom, using full classical mechanical molecular dynamics for the heavy atom degrees of freedom, including the solvent molecules.
Journal ArticleDOI
Binding Energy and Dipole Moment of Alkali Halide Molecules
TL;DR: In this article, a simple theory of alkali halide gas molecules in the spirit of Born-Mayer lattice theory is presented, where each molecule is constituted of ions, each of which is polarized by the electrostatic field of the other.
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Nonadiabatic molecular dynamics simulation of photodissociation and geminate recombination of i2 liquid xenon
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