Molar volume of solid isotopic helium mixtures

@article{Herrero2008MolarVO,
  title={Molar volume of solid isotopic helium mixtures},
  author={C. Herrero},
  journal={arXiv: Materials Science},
  year={2008}
}
  • C. Herrero
  • Published 3 April 2008
  • Materials Science, Physics
  • arXiv: Materials Science
Solid isotopic helium mixtures have been studied by path-integral Monte Carlo simulations in the isothermal-isobaric ensemble. This method allowed us to study the molar volume as a function of temperature, pressure, and isotopic composition. At 25 K and 0.2 GPa, the relative difference between molar volumes of isotopically-pure crystals of 3He and 4He is found to be about 3%. This difference decreases under pressure, and for 12 GPa it is smaller than 1%. For isotopically-mixed crystals, a… Expand
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References

SHOWING 1-10 OF 47 REFERENCES
Solid helium at high pressure: a path-integral Monte Carlo simulation
Solid helium (3He and 4He) in the hcp and fcc phases has been studied by the path-integral Monte Carlo technique. Simulations were carried out in the isothermal–isobaric (NPT) ensemble at pressuresExpand
Isotopic effect in the lattice parameter of rare-gas solids
The dependence of the lattice parameter of rare-gas (Lennard-Jones) solids on isotopic mass has been studied by the path-integral Monte Carlo method. Simulations were carried out in theExpand
Isotopic shift of helium melting pressure: Path integral Monte Carlo study.
TLDR
The isotopic shift of helium melting pressure in the temperature range (T > 100 K) where a discrepancy between theory and experiment has been recently reported is computed by Path Integral Monte Carlo with realistic Aziz pair potential together with Bruch-McGee three-body forces. Expand
Isotope effects in structural and thermodynamic properties of solid neon
Path-integral Monte Carlo simulations in the isothermal-isobaric ensemble have been carried out to study isotope effects in solid neon. This computational method allows a quantitative andExpand
The isotopic mass and lattice parameter of diamond; a path-integral simulation
The dependence of the lattice parameter of diamond upon the isotopic mass has been studied by path-integral Monte Carlo simulations in the isothermal-isobaric ensemble. This computational methodExpand
Isotopic effect on the lattice constant of silicon a quantum Monte Carlo simulation
Path-integral Monte Carlo simulations in the isothermal-isobaric ensemble have been carried out to study the dependence of the lattice parameter of silicon upon the isotopic mass. This computationalExpand
Isotopic shift in the melting curve of helium: A path integral Monte Carlo study
The path integral Monte Carlo method is used to estimate the difference in the melting pressures of 4He and 3He. Thermodynamic and structural properties of both isotopes are also computed using anExpand
Rare-gas solids under pressure: A path-integral Monte Carlo simulation
Rare-gas solids (Ne, Ar, Kr, and Xe) under hydrostatic pressure up to 30 kbar have been studied by path-integral Monte Carlo simulations in the isothermal-isobaric ensemble. Results of theseExpand
Quantum momentum distribution and kinetic energy in solid 4He.
TLDR
It is shown that n(k) in this highly anharmonic, quantum solid differs significantly from a Gaussian, and is more sharply peaked with larger occupation of low momentum states than in a Maxwell-Boltzmann distribution. Expand
Kinetic Energy of Liquid and Solid 4He.
We report new path-integral calculations and measurements of the kinetic energy of condensed helium and construct an overall dependence of kinetic energy on temperature for densities less than 70Expand
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