Quantum solvation of carbonyl sulfide with helium atoms

Jian Tang; Yunjie Xu; A. R.W. McKellar; Wolfgang Jäger

doi:10.1126/science.1073718

Quantum solvation of carbonyl sulfide with helium atoms

Jian Tang, Yunjie Xu, A. R.W. McKellar, Wolfgang Jäger

Research output: Contribution to journal › Article › peer-review

184 Citations (Scopus)

Abstract

High-resolution infrared and microwave spectra of He_N-carbonyl sulfide (He_N-OCS) clusters with N ranging from 2 to 8 have been detected and unambiguously assigned. The spectra show the formation of a solvation layer beginning with an equatorial "donut" of five helium atoms around the OCS molecule. The cluster moment of inertia increases as a function of N and overshoots the liquid droplet limit for N > 5, implying that even atoms in the first solvation shell are decoupled from the OCS rotation in helium nanodroplets. To the extent that this is due to superfluidity, the results directly explore the microscopic evolution of a phenomenon that is formally macroscopic in nature.

Original language	English
Pages (from-to)	2030-2033
Number of pages	4
Journal	Science
Volume	297
Issue number	5589
DOIs	https://doi.org/10.1126/science.1073718
Publication status	Published - Sept 20 2002
Externally published	Yes

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abstract = "High-resolution infrared and microwave spectra of HeN-carbonyl sulfide (HeN-OCS) clusters with N ranging from 2 to 8 have been detected and unambiguously assigned. The spectra show the formation of a solvation layer beginning with an equatorial {"}donut{"} of five helium atoms around the OCS molecule. The cluster moment of inertia increases as a function of N and overshoots the liquid droplet limit for N > 5, implying that even atoms in the first solvation shell are decoupled from the OCS rotation in helium nanodroplets. To the extent that this is due to superfluidity, the results directly explore the microscopic evolution of a phenomenon that is formally macroscopic in nature.",

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AU - Tang, Jian

AU - Xu, Yunjie

AU - McKellar, A. R.W.

AU - Jäger, Wolfgang

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Y1 - 2002/9/20

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AB - High-resolution infrared and microwave spectra of HeN-carbonyl sulfide (HeN-OCS) clusters with N ranging from 2 to 8 have been detected and unambiguously assigned. The spectra show the formation of a solvation layer beginning with an equatorial "donut" of five helium atoms around the OCS molecule. The cluster moment of inertia increases as a function of N and overshoots the liquid droplet limit for N > 5, implying that even atoms in the first solvation shell are decoupled from the OCS rotation in helium nanodroplets. To the extent that this is due to superfluidity, the results directly explore the microscopic evolution of a phenomenon that is formally macroscopic in nature.

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Quantum solvation of carbonyl sulfide with helium atoms

Abstract

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