Neon

Neon (Ne)

Lennard-Jones parameters

Some Lennard-Jones parameters for neon are listed in the following table:

Authors	$\epsilon$ (meV)	$\sigma$ (nm)	Reference
Herrero	3.0840	0.2782
Ramírez and Herrero	3.2135	0.2782

Buckingham potential

The Buckingham potential for neon is given by (Eq. 26 ):

$E(r)=25.7\times 10^{-10}e^{-r/0.235}-9\times 10^{-12}r^{-6}$

where $E$ is in ergs ( 10⁻⁷ J) and $r$ in Å.

Phase diagram

The phase diagram for temperatures in the range of 17–50 K and pressures between 10⁻² and 2×10³ bar has been calculated in Ref. 2. The critical point was located at $T_{c}=46.7~{\mathrm {K} }$ and $p_{c}=27.7$ bar (Ref. 2 Table I), and the triple point at $T_{tp}=24.55~{\mathrm {K} }$ and $p_{tp}=0.315$ bar (Ref. 2 Table II).

References

Related reading

• John Edward Lennard-Jones "On the Atomic Fields of Helium and Neon", Proceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character 107 pp. 157-170 (1925)
• J. G. Powles and J. L. F. Abascal "The structure of liquid neon: an anomaly resolved", Journal of Physics C: Solid State Physics 16 L441 (1983)
• R. Ramírez, C. P. Herrero, A. Antonelli, and E. R. Hernández "Path integral calculation of free energies: Quantum effects on the melting temperature of neon", Journal of Chemical Physics 129 064110 (2008)