Abstract
The rich occurrence of helium and hydrogen in space makes their properties highly interesting.By means of molecular dynamics (MD), we have examined two interatomic potentials for4He. Both potentials are demonstrated to reproduce high-pressure solid and liquid equation ofstate (EOS) data. The EOS, solid–solid transitions and melting at high pressures(P) were studied using a two-phase method. The Buckingham potential shows agood agreement with theoretical and experimental EOS, but does not reproduceexperimental melting data. The Aziz potential shows a perfect match with theoreticalmelting data. We conclude that there is a stable body-centred-cubic (bcc) phase for4He attemperatures (T) above 340 K and pressures above 22 GPa for the Buckingham potential,whereas no bcc phase is found for the Aziz potential in the appliedPT range.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
