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Structure and dynamics of the He-2(*) (a3 Sigma(+)(u)) molecular complex in condensed phases of helium

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Structure and dynamics of the He-2(*) (a3 Sigma(+)(u)) molecular complex in condensed phases of helium. / Kafanov, Sergey; Parshin, Alexander Y.; Todoshchenko, Igor A.

In: Journal of Experimental and Theoretical Physics, Vol. 91, No. 5, 11.2000, p. 991-999.

Research output: Contribution to Journal/MagazineJournal articlepeer-review

Harvard

Kafanov, S, Parshin, AY & Todoshchenko, IA 2000, 'Structure and dynamics of the He-2(*) (a3 Sigma(+)(u)) molecular complex in condensed phases of helium', Journal of Experimental and Theoretical Physics, vol. 91, no. 5, pp. 991-999. https://doi.org/10.1134/1.1334989

APA

Kafanov, S., Parshin, A. Y., & Todoshchenko, I. A. (2000). Structure and dynamics of the He-2(*) (a3 Sigma(+)(u)) molecular complex in condensed phases of helium. Journal of Experimental and Theoretical Physics, 91(5), 991-999. https://doi.org/10.1134/1.1334989

Vancouver

Kafanov S, Parshin AY, Todoshchenko IA. Structure and dynamics of the He-2(*) (a3 Sigma(+)(u)) molecular complex in condensed phases of helium. Journal of Experimental and Theoretical Physics. 2000 Nov;91(5):991-999. https://doi.org/10.1134/1.1334989

Author

Kafanov, Sergey ; Parshin, Alexander Y. ; Todoshchenko, Igor A. / Structure and dynamics of the He-2(*) (a3 Sigma(+)(u)) molecular complex in condensed phases of helium. In: Journal of Experimental and Theoretical Physics. 2000 ; Vol. 91, No. 5. pp. 991-999.

Bibtex

@article{30dd5f317df540a484bc48eea8abc758,
title = "Structure and dynamics of the He-2(*) (a3 Sigma(+)(u)) molecular complex in condensed phases of helium",
abstract = "An investigation is made of the absorption spectra of triplet metastable helium molecules in the a(3) Sigma (+)(u)state in liquid He-4 and He-3 at various pressures and in dense He-3 gas. An analysis of the spectrum corresponding to the a(3)Sigma (+)(u) --> c(3)Sigma (+)(g) transition confirms the conclusion that there is a microscopic bubble surrounding the molecule in liquid helium. A simple approximation is proposed for the wave function of the valence electron of the molecule and the parameters of the bubble are determined for various experimental conditions. The coefficient of molecular recombination in liquid He-3 and He-4 was determined experimentally at various pressures and in dense cold He-3 gas. The results show good agreement with the theory of mutual recombination limited by molecular diffusion under conditions of strong van der Waals interaction. It is shown that in the condensed phases of helium the polarization of the molecules under the action of the magnetic field does not lead to suppression of their mutual recombination, and this is confirmed experimentally. (C) 2000 MAIK {"}Nauka/Interperiodica{"}.",
keywords = "SUPERFLUID-HELIUM, STATES, ATOMS",
author = "Sergey Kafanov and Parshin, {Alexander Y.} and Todoshchenko, {Igor A.}",
year = "2000",
month = nov,
doi = "10.1134/1.1334989",
language = "English",
volume = "91",
pages = "991--999",
journal = "Journal of Experimental and Theoretical Physics",
issn = "1063-7761",
publisher = "AMER INST PHYSICS",
number = "5",

}

RIS

TY - JOUR

T1 - Structure and dynamics of the He-2(*) (a3 Sigma(+)(u)) molecular complex in condensed phases of helium

AU - Kafanov, Sergey

AU - Parshin, Alexander Y.

AU - Todoshchenko, Igor A.

PY - 2000/11

Y1 - 2000/11

N2 - An investigation is made of the absorption spectra of triplet metastable helium molecules in the a(3) Sigma (+)(u)state in liquid He-4 and He-3 at various pressures and in dense He-3 gas. An analysis of the spectrum corresponding to the a(3)Sigma (+)(u) --> c(3)Sigma (+)(g) transition confirms the conclusion that there is a microscopic bubble surrounding the molecule in liquid helium. A simple approximation is proposed for the wave function of the valence electron of the molecule and the parameters of the bubble are determined for various experimental conditions. The coefficient of molecular recombination in liquid He-3 and He-4 was determined experimentally at various pressures and in dense cold He-3 gas. The results show good agreement with the theory of mutual recombination limited by molecular diffusion under conditions of strong van der Waals interaction. It is shown that in the condensed phases of helium the polarization of the molecules under the action of the magnetic field does not lead to suppression of their mutual recombination, and this is confirmed experimentally. (C) 2000 MAIK "Nauka/Interperiodica".

AB - An investigation is made of the absorption spectra of triplet metastable helium molecules in the a(3) Sigma (+)(u)state in liquid He-4 and He-3 at various pressures and in dense He-3 gas. An analysis of the spectrum corresponding to the a(3)Sigma (+)(u) --> c(3)Sigma (+)(g) transition confirms the conclusion that there is a microscopic bubble surrounding the molecule in liquid helium. A simple approximation is proposed for the wave function of the valence electron of the molecule and the parameters of the bubble are determined for various experimental conditions. The coefficient of molecular recombination in liquid He-3 and He-4 was determined experimentally at various pressures and in dense cold He-3 gas. The results show good agreement with the theory of mutual recombination limited by molecular diffusion under conditions of strong van der Waals interaction. It is shown that in the condensed phases of helium the polarization of the molecules under the action of the magnetic field does not lead to suppression of their mutual recombination, and this is confirmed experimentally. (C) 2000 MAIK "Nauka/Interperiodica".

KW - SUPERFLUID-HELIUM

KW - STATES

KW - ATOMS

U2 - 10.1134/1.1334989

DO - 10.1134/1.1334989

M3 - Journal article

VL - 91

SP - 991

EP - 999

JO - Journal of Experimental and Theoretical Physics

JF - Journal of Experimental and Theoretical Physics

SN - 1063-7761

IS - 5

ER -