Understanding the elastic bending mechanism in a 9,10-anthraquinone crystal through thermal expansion study

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Abstract

Thermal expansion study has been used to understand the mechanism of elastic bending in 9,10-anthraquinone. Expansion along the bending axis due to bending is expected to resemble the thermal expansion along the same direction.

Abstract

The crystal structures of Cu(acac) ₂ and 9,10-anthraquinone are very similar and both of them exhibit elastic bending. The mechanism of thermal expansion has been correlated with the mechanism of bending for Cu(acac) ₂. Then this idea has been used to postulate the bending mechanism in a 9,10-anthraquinone crystal from a thermal expansion study.

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Double-slit photoelectron interference in strong-field ionization of the neon dimer

Maksim Kunitski, Nicolas Eicke, Pia Huber … (2019)

Wave-particle duality is an inherent peculiarity of the quantum world. The double-slit experiment has been frequently used for understanding different aspects of this fundamental concept. The occurrence of interference rests on the lack of which-way information and on the absence of decoherence mechanisms, which could scramble the wave fronts. Here, we report on the observation of two-center interference in the molecular-frame photoelectron momentum distribution upon ionization of the neon dimer by a strong laser field. Postselection of ions, which are measured in coincidence with electrons, allows choosing the symmetry of the residual ion, leading to observation of both, gerade and ungerade, types of interference.