A unified description of spectroscopic interferences in predissociation

Laplante, Jean-Pierre; Bandrauk, André D.; Carlone, C.

doi:10.1139/p77-001

Cited by 10 publications

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“…In strong fields, the mixing of bound states with continua introduces formal biorthogonal complex basis functions15 which are useful in discussing overlapping resonance effects in molecular multiphoton processes. 16 We will show that the coupled equation approach follows from the time-dependent theory for both weak and strong fields for the four spectroscopies mentioned above.…”

Section: Introductionmentioning

confidence: 94%

Photochemistry and photophysics of small heterocyclic molecules: 1. Multiphoton ionization and dissociation of N-isopropyldimethyloxaziridine

Michelsen¹,

Giugliano²,

BelBruno³

1985

J. Phys. Chem.

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Section: Introductionmentioning

confidence: 94%

Photochemistry and photophysics of small heterocyclic molecules: 1. Multiphoton ionization and dissociation of N-isopropyldimethyloxaziridine

Michelsen¹,

Giugliano²,

BelBruno³

1985

J. Phys. Chem.

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Coupled‐Equation Method for Multiphoton Transitions in Diatomic Molecules: Bridging the Weak‐ and Intense‐Field Limits

Bandrauk¹,

Atabek²

1989

Advances in Chemical Physics

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Coupled equations approach to multiphoton molecular processes

Bandrauk

Gélinas

1987

J Comput Chem

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Using the dressed molecule picture of molecule radiation interactions (A. D. Bandrauk et al., J . Chem. Phys., 79, 3256; 80, 4926; 83, 2840) one can deduce multiphoton processes (absorption, scattering, nonlinear optical properties, etc.) amplitudes from coupled second-order differential equations with electronic surfaces and transition moments as input data obtainable from quantum chemical calculations. The present approach enables one to include in the calculation bound and continuum states simultaneously by the use of appropriate boundary conditions for the numerical solutions of these coupled equations. In the case of weak radiative couplings, one recovers the usual Fermi-Golden rule expressions for electronic absorption, raman scattering, etc. The method is thus quite general, bridging the weak field (traditional photochemistry) and the strong field (laser chemistry) regimes which are attainable with today's lasers. The numerical solutions of the coupled equations give us the stationary states of the molecule + radiation system, called dressed molecule. Preparation of the initial state can be mimicked in the coupled equations by an artificial channel method for processes involving a final-state dissociation. Examples of such calculations will be presented in the diatomic C12 for which several ab initio electronic states and transition moments were available.

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A unified description of spectroscopic interferences in predissociation

Cited by 10 publications

References 0 publications

Photochemistry and photophysics of small heterocyclic molecules: 1. Multiphoton ionization and dissociation of N-isopropyldimethyloxaziridine

Photochemistry and photophysics of small heterocyclic molecules: 1. Multiphoton ionization and dissociation of N-isopropyldimethyloxaziridine

Coupled‐Equation Method for Multiphoton Transitions in Diatomic Molecules: Bridging the Weak‐ and Intense‐Field Limits

Coupled equations approach to multiphoton molecular processes

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