Rotational cooling of Li2(1Σg +) molecules by ultracold collisions with a helium gas buffer

E. Bodo; F. A. Gianturco; F. Sebastianelli; E. Yurtsever; M. Yurtsever

doi:10.1007/s00214-004-0586-z

Rotational cooling of Li₂(¹Σ_g ⁺) molecules by ultracold collisions with a helium gas buffer

E. Bodo, F. A. Gianturco^*, F. Sebastianelli, E. Yurtsever, M. Yurtsever

^*Corresponding author for this work

Department of Chemistry

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

16 Citations (Scopus)

Abstract

The very weak interaction of Li₂ with He atoms has been obtained from accurate ab initio calculations and is here analyzed in terms of its anisotropic features. Quantum scattering calculations of the rotational inelastic de-excitation cross sections are carried out using a recently proposed multichannel treatment, the modified variable phase method, implemented by the authors and applied here to ultralow collision energies. General conclusions on the low efficiency of a He buffer gas in cooling down molecular rotations in this system are presented and analyzed.

Original language	English
Pages (from-to)	263-269
Number of pages	7
Journal	Theoretical Chemistry Accounts
Volume	112
Issue number	4
DOIs	https://doi.org/10.1007/s00214-004-0586-z
Publication status	Published - Sept 2004

Keywords

Atom-molecule quantum scattering
Molecular collisions
Ultralow energy scatterring
Van dewaals interaction forces
Vibrational collisional cooling

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title = "Rotational cooling of Li2(1Σg +) molecules by ultracold collisions with a helium gas buffer",

abstract = "The very weak interaction of Li2 with He atoms has been obtained from accurate ab initio calculations and is here analyzed in terms of its anisotropic features. Quantum scattering calculations of the rotational inelastic de-excitation cross sections are carried out using a recently proposed multichannel treatment, the modified variable phase method, implemented by the authors and applied here to ultralow collision energies. General conclusions on the low efficiency of a He buffer gas in cooling down molecular rotations in this system are presented and analyzed.",

keywords = "Atom-molecule quantum scattering, Molecular collisions, Ultralow energy scatterring, Van dewaals interaction forces, Vibrational collisional cooling",

author = "E. Bodo and Gianturco, {F. A.} and F. Sebastianelli and E. Yurtsever and M. Yurtsever",

year = "2004",

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doi = "10.1007/s00214-004-0586-z",

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T1 - Rotational cooling of Li2(1Σg +) molecules by ultracold collisions with a helium gas buffer

AU - Bodo, E.

AU - Gianturco, F. A.

AU - Sebastianelli, F.

AU - Yurtsever, E.

AU - Yurtsever, M.

PY - 2004/9

Y1 - 2004/9

N2 - The very weak interaction of Li2 with He atoms has been obtained from accurate ab initio calculations and is here analyzed in terms of its anisotropic features. Quantum scattering calculations of the rotational inelastic de-excitation cross sections are carried out using a recently proposed multichannel treatment, the modified variable phase method, implemented by the authors and applied here to ultralow collision energies. General conclusions on the low efficiency of a He buffer gas in cooling down molecular rotations in this system are presented and analyzed.

AB - The very weak interaction of Li2 with He atoms has been obtained from accurate ab initio calculations and is here analyzed in terms of its anisotropic features. Quantum scattering calculations of the rotational inelastic de-excitation cross sections are carried out using a recently proposed multichannel treatment, the modified variable phase method, implemented by the authors and applied here to ultralow collision energies. General conclusions on the low efficiency of a He buffer gas in cooling down molecular rotations in this system are presented and analyzed.

KW - Atom-molecule quantum scattering

KW - Molecular collisions

KW - Ultralow energy scatterring

KW - Van dewaals interaction forces

KW - Vibrational collisional cooling

UR - http://www.scopus.com/inward/record.url?scp=4944234693&partnerID=8YFLogxK

U2 - 10.1007/s00214-004-0586-z

DO - 10.1007/s00214-004-0586-z

M3 - Article

AN - SCOPUS:4944234693

SN - 1432-881X

VL - 112

SP - 263

EP - 269

JO - Theoretical Chemistry Accounts

JF - Theoretical Chemistry Accounts

IS - 4

ER -

Rotational cooling of Li₂(¹Σ_g ⁺) molecules by ultracold collisions with a helium gas buffer

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Keywords

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