IR laser excitation in molecules: Chaos and diffusive energy growth

Conference · Thu Jan 01 04:00:00 EST 1987

DOI:https://doi.org/10.1007/978-1-4613-0967-3_49· OSTI ID:6267194

Ackerhalt, J R; Milonni, P W

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.

• Research Organization: Los Alamos National Lab., NM (USA)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 6267194
• Report Number(s): LA-UR-87-2311; CONF-870784-1; ON: DE87013147
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400500 -- Photochemistry
640302* -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
ELECTROMAGNETIC RADIATION
ENERGY LEVELS
EXCITED STATES
INFRARED RADIATION
MATHEMATICAL MODELS
MOLECULES
MOTION
MULTI-PHOTON PROCESSES
POLYATOMIC MOLECULES
RADIATIONS
ROTATION
VIBRATIONAL STATES