Skip to main content

The Occurrence of Transitions between the Electronic States of Molecular Ions

  • Chapter
Gaseous Molecular Ions

Part of the book series: Topics in Physical Chemistry ((TOPPHYSCHEM,volume 2))

  • 139 Accesses

Abstract

It was repeatedly shown in Chapter 1 that the absorption of energy by molecular systems above their first ionization energy results in the creation of all possible electronic states of the molecular ion allowed by the appropriate selection rules. The decay of such excited electronic states of molecular ions can take place either by emission of radiation or by successive non radiative processes. Allowed emission of radiation requires times ranging from 10−9 to 10−7 s. Other decay processes are generally faster than radiative desexcitation, e.g. direct dissociation (10−14 to 10−13 s) and non-radiative transitions, precisely invoked when the radiative emissions are completely quenched.

This is a preview of subscription content, log in via an institution to check access.

Access this chapter

Chapter
USD 29.95
Price excludes VAT (USA)
  • Available as PDF
  • Read on any device
  • Instant download
  • Own it forever
eBook
USD 39.99
Price excludes VAT (USA)
  • Available as PDF
  • Read on any device
  • Instant download
  • Own it forever
Softcover Book
USD 54.99
Price excludes VAT (USA)
  • Compact, lightweight edition
  • Dispatched in 3 to 5 business days
  • Free shipping worldwide - see info

Tax calculation will be finalised at checkout

Purchases are for personal use only

Institutional subscriptions

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. Landau L, Lifschitz E, Mecanique Quantique, 2nd edn. Edition MIR. Moscow 1967 p 423

    Google Scholar 

  2. Teller E (1937) The Crossing of Potential Surfaces. J Phys Chem 41: 109–116

    Article  CAS  Google Scholar 

  3. Sakei S, Kato S, Morokuma K, Kusunoki I (1981) Potential Energy Surfaces of the Reaction C+ + H2 → CH+ + H. J Chem Phys 75: 5398–5409

    Article  Google Scholar 

  4. Desouter-Lecomte M, Dehareng D, Leyh-Nihant B, Praet MT, Lorquet AJ, Lorquet JC (1985) Nonadiabatic Unimolecular Reactions of Polyatomic Molecules. J Phys Chem 89: 214–222

    Article  CAS  Google Scholar 

  5. Desouter-Lecomte M, Leyh-Nihant B, Praet MT, Lorquet JC (1987) Avoided Crossings: A Study of the Nonadiabatic Transition Probabilities. J Chem Phys 86: 7025–7034

    Article  CAS  Google Scholar 

  6. Herzberg G (1966) Molecular Spectra and Molecular Structure III. Electronic Spectra and Electronic Structure of Polyatomic Molecules. Van Nostrand Reinhold Company, New York

    Google Scholar 

  7. Maier JP (1979) Decay Processes of the Lowest Excited Electronic States of Polyatomic Radical Cations. In: Ausloos P (ed) Kinetics of Ion-Molecule Reactions, Vol B40. Plenum Press, New York

    Google Scholar 

  8. Leach S, Dujardin G, Taieb G (1980) Radiationless Transitions in Gas Phase Molecular Ions. J de Chim Physique et de Physico-Chimie Biologique 77: 705–718

    CAS  Google Scholar 

  9. Maier JP (1982) Open-Shell Organic Cations: Spectroscopic Studies by Means of their Radiative Decay in the Gas Phase. Acc Chem Res 15: 18–23

    Article  CAS  Google Scholar 

  10. Dannacher J (1980) Photoelectron-Photoion Coincidence Study of Polyatomic Radical Cations for which Competition between Radiative and Dissociative Decay is Observed. Adv Mass Spectrom 8A: 37–46

    Google Scholar 

  11. Stadelmann JP, Vogt J (1980) Isolated State Dissociations from Electronically Excited Radical Cations of Fluoroethenes Studied by Photoelectron-Photoion Coincidence Spectroscopy. Adv Mass Spectrom 8A: 47–55

    Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Rights and permissions

Reprints and permissions

Copyright information

© 1992 Springer-Verlag Berlin Heidelberg

About this chapter

Cite this chapter

Illenberger, E., Momigny, J. (1992). The Occurrence of Transitions between the Electronic States of Molecular Ions. In: Gaseous Molecular Ions. Topics in Physical Chemistry, vol 2. Steinkopff, Heidelberg. https://doi.org/10.1007/978-3-662-07383-4_5

Download citation

  • DOI: https://doi.org/10.1007/978-3-662-07383-4_5

  • Publisher Name: Steinkopff, Heidelberg

  • Print ISBN: 978-3-662-07385-8

  • Online ISBN: 978-3-662-07383-4

  • eBook Packages: Springer Book Archive

Publish with us

Policies and ethics