Molecule-Frame Photoelectron Angular Distributions from Oriented<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi>CF</mml:mi></mml:mrow><mml:mrow><mml:mn>3</mml:mn></mml:mrow></mml:msub></mml:mrow><mml:mi>I</mml:mi></mml:math>Molecules

Electron-ion recoil vector correlations in dissociative ${5a}_{1}^{\ensuremath{-}1}$ photoionization of ${\mathrm{CF}}_{3}\mathrm{I}$ are examined with a photoelectron-photoion coincidence imaging technique and fixed-molecule photoionization calculations. The ${\mathrm{CF}}_{3}^{+}$ dissociation channel results are readily interpreted as molecule-frame photoelectron angular distributions from, effectively, oriented parent molecules. The competing ${\mathrm{I}}^{+}$ fragmentation channel distributions, while similar at higher ionization energies, deviate nearer to the ${\mathrm{I}}^{+}$ dissociation threshold, revealing nontrivial (non-axial-recoil) ion fragmentation dynamics in this region.

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