Open AccessMolecular dynamics study on the phase transition of high density helium
Author(s) -
Baoling Zhang,
Xiaoyong Song,
Qing Hou,
Jun Wang
Publication year - 2015
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.64.016202
Subject(s) - helium , materials science , melting curve analysis , thermodynamics , molecular dynamics , melting temperature , atmospheric temperature range , bubble , range (aeronautics) , atomic physics , physics , mechanics , chemistry , computational chemistry , gene , polymerase chain reaction , biochemistry , composite material
The melting curve of helium has been calculated over the temperature range of 0–1000 K using molecular dynamics method. Comparisons of the calculated melting curve and the experimental data show that the consistence between the melting curve and the experimental data may reach 500 K. When the temperature is above 600 K, no reliable experimental data have been found for comparison. In addition, the pressures inside the helium bubbles of various sizes existing in metal titanium are calculated and have a comparison with the melting curve. Results show that, at low temperatures, the helium bubbles may be in solid state as the temperature decreases. When the temperature is above 300 K, no solid helium bubble may exist.