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Molecules in Intense Laser Fields

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Part of the NATO ASI Series book series (NSSB,volume 212)

Abstract

Recent advances in tunable laser sources have stimulated a great deal of interest in the study of intense field-matter interaction physics. Whenever a molecule interacts with an intense radiation field, it can absorb multiple photons from the field and make a transition either to an excited state (excitation) or into the continuum (ionization). If the energy of an integral number of photons equals the energy difference between the initial and an excited state, the multiphoton process becomes resonant and its probability is greatly enhanced. The observation of such resonant enhanced processes requires considerably less intensity than that required for non-resonant processes. Several researchers have taken advantage of this resonance enhancement to study various aspects of resonant enhanced multiphoton ionization (REMPI) processes in molecules.1 Measurement of ionic and photoelectron spectra have illustrated features such as non-Franck-Condon effects in ionic vibrational branching ratios due to autoionization,2 shape resonances3 and Cooper minima,4 non-atomic effects in ionization of Rydberg states5 and competition between rotational and vibrational autoionization.6

Keywords

  • Excited State
  • Photoelectron Spectrum
  • Lawrence Livermore National Laboratory
  • Multiphoton Ionization
  • Rydberg Series

These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Dixit, S.N., McKoy, V. (1990). Molecules in Intense Laser Fields. In: Nicolaides, C.A., Clark, C.W., Nayfeh, M.H. (eds) Atoms in Strong Fields. NATO ASI Series, vol 212. Springer, Boston, MA. https://doi.org/10.1007/978-1-4757-9334-5_29

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  • DOI: https://doi.org/10.1007/978-1-4757-9334-5_29

  • Publisher Name: Springer, Boston, MA

  • Print ISBN: 978-1-4757-9336-9

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