### Abstract

Chemical shifts for ^{129}Xe at 25°C are presented for densities between 5 × 10^{-3} and 2.2 × 10^{-2} mol/cm^{3}, corresponding to pressures between 50 and 1000 bar. Also presented are small angle X-ray scattering results for xenon at 28 and 45°C and pressures between 30 and 400 bar. The scattering results reveal the expected increase in aggregation and correlation length near the critical density. The chemical shifts exhibit deviations from the second-order virial equation over a broad range of densities. These deviations are also evident in calculations from integral equation theory. A departure from the cage model of solvent nearest neighbors due to repulsive solvation effects is discussed as a possible source of these deviations.

Original language | English |
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Pages (from-to) | 11846-11857 |

Number of pages | 12 |

Journal | Journal of Physical Chemistry |

Volume | 98 |

Issue number | 46 |

Publication status | Published - Jan 1 1994 |

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### ASJC Scopus subject areas

- Engineering(all)
- Physical and Theoretical Chemistry

### Cite this

*Journal of Physical Chemistry*,

*98*(46), 11846-11857.

**Fluid structure in supercritical xenon by nuclear magnetic resonance spectroscopy and small angle X-ray scattering.** / Pfund, D. M.; Zemanian, T. S.; Linehan, John; Fulton, J. L.; Yonker, C. R.

Research output: Contribution to journal › Article

*Journal of Physical Chemistry*, vol. 98, no. 46, pp. 11846-11857.

}

TY - JOUR

T1 - Fluid structure in supercritical xenon by nuclear magnetic resonance spectroscopy and small angle X-ray scattering

AU - Pfund, D. M.

AU - Zemanian, T. S.

AU - Linehan, John

AU - Fulton, J. L.

AU - Yonker, C. R.

PY - 1994/1/1

Y1 - 1994/1/1

N2 - Chemical shifts for 129Xe at 25°C are presented for densities between 5 × 10-3 and 2.2 × 10-2 mol/cm3, corresponding to pressures between 50 and 1000 bar. Also presented are small angle X-ray scattering results for xenon at 28 and 45°C and pressures between 30 and 400 bar. The scattering results reveal the expected increase in aggregation and correlation length near the critical density. The chemical shifts exhibit deviations from the second-order virial equation over a broad range of densities. These deviations are also evident in calculations from integral equation theory. A departure from the cage model of solvent nearest neighbors due to repulsive solvation effects is discussed as a possible source of these deviations.

AB - Chemical shifts for 129Xe at 25°C are presented for densities between 5 × 10-3 and 2.2 × 10-2 mol/cm3, corresponding to pressures between 50 and 1000 bar. Also presented are small angle X-ray scattering results for xenon at 28 and 45°C and pressures between 30 and 400 bar. The scattering results reveal the expected increase in aggregation and correlation length near the critical density. The chemical shifts exhibit deviations from the second-order virial equation over a broad range of densities. These deviations are also evident in calculations from integral equation theory. A departure from the cage model of solvent nearest neighbors due to repulsive solvation effects is discussed as a possible source of these deviations.

UR - http://www.scopus.com/inward/record.url?scp=0028549486&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0028549486&partnerID=8YFLogxK

M3 - Article

VL - 98

SP - 11846

EP - 11857

JO - Journal of Physical Chemistry

JF - Journal of Physical Chemistry

SN - 0022-3654

IS - 46

ER -