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Showing 1–8 of 8 results
Advanced filters: Author: Edvardas Narevicius Clear advanced filters

  • In cold chemistry, quantum phenomena in reactants' translational motion lead to the temporary trapping of reactants in a collisional complex. It is now shown that this metastable complex is responsible for a dramatic quantum kinetic isotope effect as observed in Penning ionization reactions at low temperatures.

    • Etay Lavert-Ofir
    • Yuval Shagam
    • Edvardas Narevicius
    Research
    Nature Chemistry
    Volume: 6, P: 332-335

  • Here the authors use ion-electron coincidence imaging method to explore collision dynamics. They observe Feshbach resonance in the Penning ionization collision of argon and excited helium atoms, resulting in singly charged argon ion and ground state helium.

    • Baruch Margulis
    • Julia Narevicius
    • Edvardas Narevicius
    ResearchOpen Access
    Nature Communications
    Volume: 11, P: 1-6

  • Probing resonance features in a scattering process is of fundamental interest. Here the authors discuss the Fano interference due to different angular momentum components in the angle resolved scattering cross section of He*-D2 elastic collisions.

    • Prerna Paliwal
    • Alexander Blech
    • Edvardas Narevicius
    ResearchOpen Access
    Nature Communications
    Volume: 12, P: 1-6

  • Low-temperature scattering leads to the formation of quantum resonances or quasi-bound states, which are observable as peaks in the measured collision cross-sections. Now it has been shown that two different formation mechanisms, quantum tunnelling and quantum reflection, can be distinguished by measuring and comparing elastic and inelastic scattering, which probe the spatial localization of the resonance wavefunctions.

    • Prerna Paliwal
    • Nabanita Deb
    • Edvardas Narevicius
    Research
    Nature Chemistry
    Volume: 13, P: 94-98

  • The lifetime of decaying quantum states has been thought to depend on the strength of the coupling causing the decay. Here the authors demonstrate that quantum mechanical interference can dominate this process, observing Fano-Feshbach resonance lifetimes covering several orders of magnitude.

    • Alexander Blech
    • Yuval Shagam
    • Christiane P. Koch
    ResearchOpen Access
    Nature Communications
    Volume: 11, P: 1-7

  • The rotational state of a molecule is not generally considered to play a role in how fast it reacts; however, when the temperature is low quantum effects become more important. Now, it is shown that at low temperatures rotationally excited H2 molecules react with He faster than non-rotating ground-state molecules — a process mediated by stronger long-range attraction.

    • Yuval Shagam
    • Ayelet Klein
    • Edvardas Narevicius
    Research
    Nature Chemistry
    Volume: 7, P: 921-926