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Updated: Aug 14, 2026

Spatial Separation of Molecular Conformers and Clusters
Published on: January 9, 2014
Structure, rotational dynamics, and superfluidity of small OCS-doped He clusters
Saverio Moroni1, Antonio Sarsa, Stefano Fantoni
1SMC INFM-Istituto Nazionale per la Fisica della Materia and Dipartimento di Fisica, Università di Roma La Sapienza, Piazzale Aldo Moro 2, I-00185 Rome, Italy.
Abstract:
The structural and dynamical properties of carbonyl sulfide (OCS) molecules solvated in helium clusters are studied using reptation quantum Monte Carlo, for cluster sizes n=3-20 He atoms. Computer simulations allow us to establish a relation between the rotational spectrum of the solvated molecule and the structure of the He solvent, and of both with the onset of superfluidity. Our results agree with a recent spectroscopic study of this system and provide a more complex and detailed microscopic picture of this system than inferred from experiments.
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