Large amplitude motion of the acetylene molecule within acetylene-neon complexes hosted in helium droplets

Superfluid helium droplets provide an ideal environment for spectroscopic studies with rotational resolution. Nevertheless, the molecular rotation is hindered because the embedded molecules are surrounded by a non-superfluid component. The present work explores the dynamical role of this component i...

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Bibliographic Details
Published in:Physical chemistry chemical physics : PCCP 2016-06, Vol.18 (24), p.16414-16422
Main Authors: Briant, M, Mengesha, E, de Pujo, P, Gaveau, M.-A, Soep, B, Mestdagh, J.-M, Poisson, L
Format: Article
Language:English
Subjects:
Acetylene
Chemical Sciences
Droplets
Fluids
Helium
or physical chemistry
Physical chemistry
Rotational
Simulation
Spectra
Theoretical and
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Summary:Superfluid helium droplets provide an ideal environment for spectroscopic studies with rotational resolution. Nevertheless, the molecular rotation is hindered because the embedded molecules are surrounded by a non-superfluid component. The present work explores the dynamical role of this component in the hindered rotation of C 2 H 2 within the C 2 H 2 -Ne complex. A HENDI experiment was built and near-infrared spectroscopy of C 2 H 2 -Ne and C 2 H 2 was performed in the spectral region overlapping the ν 3 / ν 2 + ν 4 + ν 5 Fermi-type resonance of C 2 H 2 . The comparison between measured and simulated spectra helped to address the above issue. This work examines how the non-superfluid component of helium droplets hosting a C 2 H 2 -Ne complex affects the hindered rotation of C 2 H 2 within the complex.
ISSN:1463-9076
1463-9084
DOI:10.1039/c6cp02989b