Photoionization of endohedral fullerenes using soft x-ray coincidence spectroscopy

ORAL

Abstract

Endohedral fullerenes are a model system to understand the reorganization dynamics of highly charged molecular systems with delocalized electronic clouds in the multiphoton excitation regime. Previous experiments at the Linac Coherent Light Source (LCLS) using free-electron laser (FEL) and ultrafast IR laser pulses studied this feature in Ho3N@C80. The question remains whether these dynamics can be studied in the site-specific single photo-ionization regime. Ho3N@C80 is particularly interesting since the inner molecule, Ho3N, is unstable in its natural form. The presence of the encapsulating cage, with the charge exchange characteristics of Holmium, stabilizes the whole molecule. In this study, we will present the charge fragmentation dynamics of this species in the single photoionization process of inner shell electrons (4d) of Holmium using the Advanced Light Source (ALS) at LBNL. Photoion-photoion correlation data, alongside with qualitative electron data will be presented.

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Authors

  • Razib Obaid

    University of Connecticut

  • Hui Xiong

    Dept of Physics, University of Connecticut, Univ of Connecticut - Storrs, University of Connecticut

  • Utuq Ablikim

    J. R. Macdonald Laboratory, Physics. Dept, Kansas State University, Kansas State University

  • Sven Augustin

    Max-Planck-Institut für Kernphysik

  • Kirsten Schnorr

    University of California, Berkeley

  • Andrea Battistoni

    Stanford University

  • Thomas Wolf

    Stanford University

  • Ann Marie Carroll

    University of Connecticut

  • Rene Bilodeau

    University of Connecticut

  • Timur Osipov

    Linac Coherent Light Source, SLAC National Accelerator Laboratory

  • Daniel Rolles

    Kansas State University

  • Nora Berrah

    Dept of Physics, University of Connecticut, University of Connecticut