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Register a new userThe study of the influence of Interaction Potential forms on Pressure and Internal Energy of Argon Crystal at High Temperatures
دراسة تأثير أشكال الكمون المتبادل على الضغط و الطاقة الداخلية لبلورة الأرغون عند درجات الحرارة العالية
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يتناول هذا البحث دراسة تأثير الأشكال المختلفة لكمون التأثير المتبادل بين الذرات على الضغط و الطاقة الداخلية لبلورات الأرغون على امتداد المنحنيات الإيزوحرارية الموافقة لدرجات الحرارة العالية الممتدة من درجة حرارة الانصهار حتى درجة حرارة الغرفة من أجل قيم مختلفة لحجم البلورة المولي تصل حتى قيمته الموافقة لمنحنيات التوازن التجريبية مع الطورين الغازي و السائل و ضمن حدود تطبيق التقريب شبه التقليدي. و تأخذ هذه الدراسة بعين الاعتبار قوى التأثير المتبادل الثنائية و قوى التأثير المتبادل الثلاثية. و تقارن نتائج هذه الدراسة المتعلقة بالضغط و الطاقة الداخلية لبلورة الأرغون مع المعطيات التجريبية المتوفرة حيث تشير المقارنة بوضوح إلى توافق نتائج الدراسة مع النتائج التجريبية.
This work is assigned to study the influence of different interaction potential forms on the pressure and internal energy of crystalline argon along its isothermal curves at high temperatures, expanded from melting point temperature up to room temperature at different molar volume values expanded up to its value, corresponded experimental equilibrium curves with gaseous and liquid phases within the framework of quasi-classical approximation. The pair-wise inter-atomic forces in conjunction with three-body forces were taken into consideration. The results of this study regarding the pressure and internal energy of crystalline Argon were compared with available experimental data. The comparison clearly indicates that the calculated results coincide well with the experimental results.
References used
BORN, M., HUANG, K. Dynamical Theory of Crystal Lattices. Oxford Science Publications, Oxford, 1985,420
HORTON, G. K.; MARADUDIN, A. A. Dynamical Properties of Solids. Vol. 2, North-Holland, Amsterdam,1975
CHARTRAND, D.J.; LE ROY R, J.; KUMAR, A; MEATH, W.J. Effect of Three- Body Forces on the Statics and Dynamics of SF6-Rgn and Rg13 Clusters. J. Chem. Phys., Vol. 98,1993, 5668-5678
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