Modeling quantum dynamics of photodetachment from closed-shell anions: Static versus fluctuating well-depth models

Mondal, Chandan Kumar; Chaudhury, Pinaki; Bhattacharyya, S.

doi:10.1002/(sici)1097-461x(1999)73:6<469::aid-qua2>3.0.co;2-e

Cited by 8 publications

(8 citation statements)

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“…Several experimental results are available on these systems, 27, 28. A few theoretical results too are available 29–31. The key quantities of interest have been the average detachment rate constant ( k av ) and its dependence on the intensity and frequency of the bichromatic light used.…”

Section: Introductionmentioning

confidence: 99%

Photodetachment dynamics from closed‐shell anions in the presence of a bichromatic field

Mondal

2005

Int J of Quantum Chemistry

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The two parameters V 0 and are fixed by requiring V(x) to reproduce the experimentally observed ground-state ionization energy of the halide ions concerned. The potentials so generated are shown to support only one bound state in each case. The time-dependent Fourier grid Hamiltonian method is used to follow the detachment dynamics with fairly high intensities of light. The environmental effects on the dynamics are sought to be modeled by allowing the well depth (V 0 ) to fluctuate randomly (V 0 (t) ϭ V 0 [1 ϩ ⌬VR(t)]; R(t) randomly fluctuates between ϩ1 and Ϫ1 with time, when ⌬V is fixed). The average detachment rate constants k av are seen to increase with increase in the intensities of used bichromatic field. An alternative model potential, V(x) ϭ ϪV 0 e Ϫx , is also shown to yield similar results.

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Section: Introductionmentioning

confidence: 99%

Photodetachment dynamics from closed‐shell anions in the presence of a bichromatic field

Mondal

2005

Int J of Quantum Chemistry

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“…To study the dynamics of the system within the Ehrenfest description, we have used the well‐studied time‐dependent Fourier Grid Hamiltonian (TDFGH) method which is a natural extension of the standard Fourier Grid Hamiltonian (FGH) method and has been applied to analyze various simple as well as complex system dynamics . In what follows, we present the salient features of the method in present context.…”

Section: Methodsmentioning

confidence: 99%

Fermi accelerator: A new insight from quantum theory of motion

Kar

Carbó‐Dorca

Chattaraj

2015

Int. J. Quantum Chem.

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Quantum localization is observed in the Fermi accelerator model with monochromatic fluctuation using the Ehrenfest description of quantum dynamics as well as through the quantum theory of motion (QTM). The effects of variations in time period and amplitude of an oscillating wall for a particle in a box, on energy and quantum phase space structures are analyzed. The effects of fluctuation decay with an increase in distance from the fluctuating wall. It is also observed that small amplitude as well as high frequency fluctuation provides enhanced quantum localization. The "quantum phase space structure" in the Ehrenfest description is constructed by following time-dependent Fourier grid Hamiltonian method while that for the grid points are formed from their trajectories obtained from QTM.

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“…It has already been applied to analyze and understand dynamics of simple as well as complex dynamical systems [26][27]. We present here the salient features of the method in the context of the present problem.…”

Section: Methodsmentioning

confidence: 99%

Tunneling time in fluctuating symmetric double wells: Suppression and enhancement of tunneling by spatial symmetry-preserving perturbations

Kar

Bhattacharyya

2011

Chemical Physics

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Modeling quantum dynamics of photodetachment from closed-shell anions: Static versus fluctuating well-depth models

Abstract: The electronic states of halide ions are modeled by a one-dimensional Ž . y x 2 Hamiltonian with a potential V x s yV e . The two parameters V and are fixed 0 0 0

Cited by 8 publications

References 28 publications

Photodetachment dynamics from closed‐shell anions in the presence of a bichromatic field

Photodetachment dynamics from closed‐shell anions in the presence of a bichromatic field

Fermi accelerator: A new insight from quantum theory of motion

Tunneling time in fluctuating symmetric double wells: Suppression and enhancement of tunneling by spatial symmetry-preserving perturbations

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