Separating nuclear spin isomers using a pump–dump laser scheme

  • Rana Obaid
  • Daniel Kinzel
  • Markus Oppel
  • Leticia González
Regular Article
Part of the following topical collections:
  1. 9th Congress on Electronic Structure: Principles and Applications (ESPA 2014)


The concept of nuclear spin isomers was already introduced in the early days of quantum mechanics. Despite its importance, not much work has been done to separate them experimentally by pushing the ratio away from its equilibrium value. We propose to use ultrashort laser pulses in a pump–dump-like experiment to enhance the ratio between different nuclear spin isomers. Exemplary wave packet simulations with optimized femtosecond pump and dump laser pulses are shown on a quinodimethane derivative to illustrate that the ratio between two different groups of nuclear spin isomers is enhanced.


Pump–probe spectroscopy Quantum dynamics Nuclear spin isomers 



We specially would like to thank Jörn Manz for suggesting these calculations but also Monika Leibscher, Thomas Grohmann and Omar Deeb for fruitful discussions. Financial support by the Deutsche Forschungsgemeinschaft via projects GO 1059/7-3 and MA 515/25-3 is gratefully acknowledged.


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Copyright information

© Springer-Verlag Berlin Heidelberg 2015

Authors and Affiliations

  • Rana Obaid
    • 1
    • 2
  • Daniel Kinzel
    • 1
  • Markus Oppel
    • 1
  • Leticia González
    • 1
  1. 1.Institut für Theoretische ChemieUniversität WienViennaAustria
  2. 2.Applied Chemistry DepartmentPalestine Polytechnic UniversityHebronPalestine

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