Rate constants for collision-induced transitions in ground-state Li<sub>2</sub>from two-laser spectroscopy

Ottinger, Ch.; Schroder, M

doi:10.1088/0022-3700/12/21/011

Cited by 13 publications

(3 citation statements)

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“…[21] experimental result for sodium but in agreement with Ottinger's result for lithium [22], We have shown that a semiclassical analysis of RET which used conservation laws of the S-operator, led to results which might be hard to obtain from a partial wave analysis. However, the provisions may apply to the almost adiabatic case which represents the other extreme to the sudden case.…”

Section: Other Models and Conclusionsupporting

confidence: 71%

“…This result has been reported by several experimentalists for Na z [20,21], For Li 2. however, no such dissymmetry was seen [22], For the Na2-molecule in the ground state X ~X; the law (16) proved valid as shown by Brunner et al [21] who quantitatively fitted by it their experimental results. This result has been reported by several experimentalists for Na z [20,21], For Li 2. however, no such dissymmetry was seen [22], For the Na2-molecule in the ground state X ~X; the law (16) proved valid as shown by Brunner et al [21] who quantitatively fitted by it their experimental results.…”

Section: Application Of the Scattering Operator To Rotational Energy mentioning

confidence: 78%

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Mj-selection rule of rotational energy transfer

Elbel

1982

Z Physik A

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Inelastic collisional processes like the changing of the rotational state J of diatomic molecules are accompanied by a change of the pertinent Zeeman quantum number mj, as well. Changes of the m j-state have a strong bearing on orientation and alignment transfer whose experimental proof has been given previously by McCaffery et al. In this paper a model is proposed which describes mj selection in accordance with Grawert's general considerations. The model succeeds in explaining Brunner's experimental result that the total transfer rate from J to ,f is inversely proportional to 2J+l and proportional to 2J< + 1, J< being the minimum of J and J.

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Section: Other Models and Conclusionsupporting

confidence: 71%

Section: Application Of the Scattering Operator To Rotational Energy mentioning

confidence: 78%

Mj-selection rule of rotational energy transfer

Elbel

1982

Z Physik A

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“…Many of these experiments were carried out with the lighter alkali dimers Li2 [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18] and Na2 [19][20][21][22][23] due to their relatively simple electronic structure and the convenient transition wavelengths for laser excitation in the visible and near IR regions. Examples of other homonuclear as well as heteronuclear diatomic molecules that were used in such studies include I2 [24][25][26], Br2 [27,28], N2 [29], NaLi [30], NaK [31][32][33], NaCs [33], CsF [34], and BaO [40], among others.…”

Section: Introductionmentioning

confidence: 99%

The effect of collisions on the rotational angular momentum of diatomic molecules studied using polarized light

Arndt

Huennekens

Packard

et al. 2020

The Journal of Chemical Physics

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We report results of an experimental study of the changes in the alignment of the rotational angular momentum of diatomic molecules during elastic collisions. The experiment involved collisions of diatomic lithium molecules in the 1 u A +  excited electronic state with noble gas atoms (helium and argon) in a thermal gas phase sample. Polarized light for excitation was combined with detection of polarization-specific fluorescence in order to achieve magnetic sublevel state selectivity. We also report results for rotationally inelastic collisions of Li2 in the lowest lying rotational levels of the

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Ab initio studies on van der Waals molecules. A comparative study with several basis sets of the C2v HeLi2 system

Matías

Tel

Novoa³

1987

J Comput Chem

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The potential energy surface of the van der Waals system HeLi2 is computed for the case in which the system has C2v symmetry and at the Li-Li distance (5.005 bohrs). A comparative study of the results for the two methods used, ab znitio Hartree-Fock and second-order Mdler-Plesset, and several basis sets, ranging from minimal to near Hartree-Fock quality, is also done. The results show the importance of correcting the basis set superposition error, and the need, in order to obtain a good description of the potential, of basis sets with polarization functions on all the atoms, when the Mdler-Plesset method is used. At the Hartree-Fock level, the MINI-1 basis gives results almost of the same quality as the near Hartree-Fock basis.

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Rate constants for collision-induced transitions in ground-state Li₂from two-laser spectroscopy

Cited by 13 publications

References 20 publications

Mj-selection rule of rotational energy transfer

Mj-selection rule of rotational energy transfer

The effect of collisions on the rotational angular momentum of diatomic molecules studied using polarized light

Ab initio studies on van der Waals molecules. A comparative study with several basis sets of the C2v HeLi2 system

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Rate constants for collision-induced transitions in ground-state Li2from two-laser spectroscopy

Cited by 13 publications

References 20 publications

Mj-selection rule of rotational energy transfer

Mj-selection rule of rotational energy transfer

The effect of collisions on the rotational angular momentum of diatomic molecules studied using polarized light

Ab initio studies on van der Waals molecules. A comparative study with several basis sets of the C2v HeLi2 system

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Product

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Rate constants for collision-induced transitions in ground-state Li₂from two-laser spectroscopy