Selectivity of elementary molecular processes in molecule-surface collisions

Gadzuk, J. W.

doi:10.1016/0009-2614(87)80275-0

Cited by 18 publications

(3 citation statements)

References 18 publications

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“…[7][8][9] Gadzuk, who has pioneered most of the theoretical modeling of such processes, has further speculated that, ''control of the intermediate state lifetime forms the basis of theoretical proposals to attain bondselective specificity in chemical reaction dynamics.'' 10 Several experimental groups have been energetically investigating the mechanism governing the photodesorption of small molecules from metal surfaces. 6,[11][12][13][14] A representative example is the uv-laser photodesorption study of NO from Pt͑111͒ performed by the NIST group.…”

Section: Introductionmentioning

confidence: 99%

Hot electron mediated photodesorption: A time-dependent approach applied to NO/Pt(111)

Harris¹,

Holloway²,

Darling³

1995

The Journal of Chemical Physics

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Section: Introductionmentioning

confidence: 99%

Hot electron mediated photodesorption: A time-dependent approach applied to NO/Pt(111)

Harris¹,

Holloway²,

Darling³

1995

The Journal of Chemical Physics

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“…The present study emerged from a longstanding interest in possible realizations [34] of the Tannor-Rice proposal [7] for control of intramolecular dynamics relevant to surface femtochemistry [13]. As discussed in section 2 here, the essential features with respect to BME are a sequence (at least two) of Hamiltonian switches.…”

Section: Double Switchingmentioning

confidence: 99%

Breathing mode excitation in near-harmonic systems: resonant mass capture, desorption and atoms in optical lattices

Gadzuk¹

1998

J. Phys. B: At. Mol. Opt. Phys.

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The phenomenon of breathing mode excitation or bound-state wavepacket squeezing and spreading driven by a time-dependent oscillator frequency (due to either a transient force constant or mass) is considered here. An easily implemented theory of stimulated wavepacket dynamics for near-harmonic systems is presented which describes a variety of generic time dependences such as single sudden excitation, double switching (excitation/time delay/de-excitation) and decaying initially excited states which characterize many processes in spectroscopy, pump-probe control in intramolecular dynamics, and femtochemistry. The model is used as the theoretical basis for understanding such diverse phenomena as quantum excitation due to temporary neutron capture, stimulated bond-breaking resulting in delocalization, desorption, or dissociation, and breathing mode excitation of ultracold atoms trapped in optical lattices. Whilst the first two examples are speculative, results for transient wavepacket dynamics of the occupied excited optical lattice are in accord with recent experimental observations reported by the NIST Laser Cooling Group. Emphasis on the inherent theoretical simplicity and the multidisciplinary aspects of near-harmonic breathing mode excitation, as exemplified by the specific realizations considered here, has been a major intent of this topical review.

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“…Schins et a/ (1993) found that excited Rydberg states, Hz,, exhibit dissociation dynamics similar but not identical to those of H : on the Ag(ll1) surface. The reason that molecules exhibit memory of the initial chargdelectronic state, even though atoms do not, is because motion along vibrational coordinates differs within each electronic state; hence, the evolution of intramolecular motion, which leads to reaction, depends on the exact sequence of electronic transitions (see the article by Gadzuk (1987)).…”

Section: Electronic Energymentioning

confidence: 99%

The role of internal energy and approach geometry in molecule/surface reactive scattering

Jacobs

1995

J. Phys.: Condens. Matter

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The detailed mechanisms of many surface reactions are manifest through dynamical studies on well defined systems. In particular, the initial electronic, vibrational, and rotational energies, as well as the molecule's orientation and point of impact at the surface, are important in determining whether a molecule will react upon collision with a surface. These effects are delineated through state-resolved experiments involving various combinations of molecular beam, ion-beam, electrostatic field, laser excitation, and angle-resolved detection techniques. In conjunction with theoretical models, comprehensive surface-scattering experiments reveal the atomic motion that reactants undergo as they transform into scattered or adsorbed products.

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Selectivity of elementary molecular processes in molecule-surface collisions

Cited by 18 publications

References 18 publications

Hot electron mediated photodesorption: A time-dependent approach applied to NO/Pt(111)

Hot electron mediated photodesorption: A time-dependent approach applied to NO/Pt(111)

Breathing mode excitation in near-harmonic systems: resonant mass capture, desorption and atoms in optical lattices

The role of internal energy and approach geometry in molecule/surface reactive scattering

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