IR laser excitation in molecules: Chaos and diffusive energy growth

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Description

After a short review of a generic vibrational model of ir multiple-photon excitation, the model is generalized to include rotations. It is shown that the combination of chaotic dynamics and rotational averaging leads to fluence-dependent absorption which removes the sensitivity of the results to model-dependent parameters. The classical rotation-vibration dynamics observed in this model correlate very well with quantum intuition based on a molecule's P, Q, and R-branch structure and on the red-shift of the vibrational absorption with excitation. The implication of these results for MPE experiments is discussed.

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Pages: 12

Creation Information

Ackerhalt, J.R. & Milonni, P.W. January 1, 1987.

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Description

After a short review of a generic vibrational model of ir multiple-photon excitation, the model is generalized to include rotations. It is shown that the combination of chaotic dynamics and rotational averaging leads to fluence-dependent absorption which removes the sensitivity of the results to model-dependent parameters. The classical rotation-vibration dynamics observed in this model correlate very well with quantum intuition based on a molecule's P, Q, and R-branch structure and on the red-shift of the vibrational absorption with excitation. The implication of these results for MPE experiments is discussed.

Physical Description

Pages: 12

Notes

NTIS, PC A02/MF A01; 1.

Source

  • NATO workshop on atomic and molecular processes with short intense laser pulse, Sherbrooke, Canada, 19 Jul 1987

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  • Other: DE87013147
  • Report No.: LA-UR-87-2311
  • Report No.: CONF-870784-1
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 6267194
  • Archival Resource Key: ark:/67531/metadc1110412

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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Creation Date

  • January 1, 1987

Added to The UNT Digital Library

  • Feb. 22, 2018, 7:45 p.m.

Description Last Updated

  • May 29, 2018, 6:53 p.m.

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Ackerhalt, J.R. & Milonni, P.W. IR laser excitation in molecules: Chaos and diffusive energy growth, article, January 1, 1987; New Mexico. (digital.library.unt.edu/ark:/67531/metadc1110412/: accessed October 19, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.