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Ultraslow isomerization in photoexcited gas-phase carbon cluster $${{\rm C}}_{10}^ -$$ C 10 -

Author

Listed:
  • K. Saha

    (Weizmann Institute of Science)

  • V. Chandrasekaran

    (Weizmann Institute of Science
    Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology)

  • O. Heber

    (Weizmann Institute of Science)

  • M. A. Iron

    (Weizmann Institute of Science)

  • M. L. Rappaport

    (Weizmann Institute of Science)

  • D. Zajfman

    (Weizmann Institute of Science)

Abstract

Isomerization and carbon chemistry in the gas phase are key processes in many scientific studies. Here we report on the isomerization process from linear $${{\rm C}}_{10}^ -$$ C 10 - to its monocyclic isomer. $${{\rm C}}_{10}^ -$$ C 10 - ions were trapped in an electrostatic ion beam trap and then excited with a laser pulse of precise energy. The neutral products formed upon photoexcitation were measured as a function of time after the laser pulse. It was found using a statistical model that, although the system is excited above its isomerization barrier energy, the actual isomerization from linear to monocyclic conformation takes place on a very long time scale of up to hundreds of microseconds. This finding may indicate a general phenomenon that can affect the interstellar medium chemistry of large molecule formation as well as other gas phase processes.

Suggested Citation

  • K. Saha & V. Chandrasekaran & O. Heber & M. A. Iron & M. L. Rappaport & D. Zajfman, 2018. "Ultraslow isomerization in photoexcited gas-phase carbon cluster $${{\rm C}}_{10}^ -$$ C 10 -," Nature Communications, Nature, vol. 9(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-03197-w
    DOI: 10.1038/s41467-018-03197-w
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