The structural second virial coefficient: III. Nitrogen revisited

Mohamad Deraman, J. C. Dore, J. G. Powles

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Measurements of neutron scattering from nitrogen gas at 100 bar are reported. The intramolecular contribution to the differential scattering cross section has been evaluated and compared with the observations to give the difference cross section representing intermolecular contributions. The results provide an improvement over previous measurements [1] and give information on the structural second virial coefficient, B2(Q, T) which is related to the intermolecular potential. The experimental data are compared with predictions based on several different forms that have been proposed for the intermolecular potential for nitrogen and best fits have been obtained to virial, B2(T), and structural virial, B2(Q, T), data for several models.It is found that the Kihara, L-J 12-6 plus core, model give a reasonably good fit to the data. However we have found that the best fit model, of those we have investigated, is a site-site L-J 12-6 plus point quadrupole model, although with a quadrupole moment differing by some 20 per cent from the current experimental value.

Original languageEnglish
Pages (from-to)173-184
Number of pages12
JournalMolecular Physics
Volume52
Issue number1
DOIs
Publication statusPublished - 1984
Externally publishedYes

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virial coefficients
Nitrogen
nitrogen
Neutrons
quadrupoles
Gases
Neutron scattering
scattering cross sections
neutron scattering
Scattering
moments
cross sections
predictions
gases

ASJC Scopus subject areas

  • Biophysics
  • Molecular Biology
  • Physical and Theoretical Chemistry
  • Condensed Matter Physics

Cite this

The structural second virial coefficient : III. Nitrogen revisited. / Deraman, Mohamad; Dore, J. C.; Powles, J. G.

In: Molecular Physics, Vol. 52, No. 1, 1984, p. 173-184.

Research output: Contribution to journalArticle

Deraman, Mohamad ; Dore, J. C. ; Powles, J. G. / The structural second virial coefficient : III. Nitrogen revisited. In: Molecular Physics. 1984 ; Vol. 52, No. 1. pp. 173-184.
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