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The H2+He fluid mixture will be dissociated into a three-component mixture composed of H2 molecules, H and He atoms at high temperatures and high pressures. The dissociation energy of H2 molecule will be lowered due to the interactions between all these particles. In this paper, the self-consistent fluid variational theory is used to calculate the equation of state of H2+He fluid mixture in the region of partial dissociation, in which the various interactions between particles and the correlation contributions to the dissociation energy caused by both the temperature and pressure effects are taken into account. The dissociation degree and thermodynamic parameters are obtained from nonideal dissociation equilibrium, which is determined self-consistently by the free energy function. Comparison was made with the available shock-wave experiments, other theoretical calculations and Monte Carlo simulations.
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Keywords:
- H2+He fluid mixture /
- equation of state /
- partial dissociation /
- self-consistent fluid variational theory
[1] Kowalski P M, Mazevet S, Saumon D, Challacombe M 2007 Phys.Rev.B 76 075112
[2] Redmer R, Holst B, Juranek H, Nettelmann N, Schwarz V 2006 J. Phys. A 39 4479
[3] Chabrier G, Saumon D, Potekhin A Y 2006 J. Phys. A 39 4411
[4] Saumon D, Chabrier G, van Horn H M 1995 Astrophys. J. Suppl. Ser. 99 713
[5] Eggert J, Brygoo S, Loubeyre P, McWilliams R S, Celliers P M, Hicks D G, Boehly T R, Jeanloz R, Collins G W 2008 Phys. Rev. Lett. 100 124503
[6] Boriskov G V, Bykov A I, II'kaev R I, Selemir V D, Simakov G V, Trunin R F, Urlin V D, Shuikin A N 2005 Phys. Rev. B 71 092104
[7] Boehly T R, Hicks D G, Celliers P M, Collins T J B, Earley R, Eggert J H, Jacobs-Perkins D, Moon S J, Vianello E, Meyerhofer D D, Collins G W 2004 Phys. Plasmas 11 L49
[8] Knudson M D, Hanson D L, Bailey J E, Hall C A, Asay J R, Deeney C 2004 Phys. Rev. B 69 144209
[9] Nellis W J, Weir S T, Mitchell A C 1999 Phys. Rev. B 59 3434
[10] Holmes N C, Ross M, Nellis W J 1995 Phys. Rev. B 52 15835
[11] Xue X Y, Sun J X 2007 Chem. Phys. 337 39
[12] Chen Q F, Cai L C, Chen D Q, Jing F Q, Zhao X G 2003 Chin. J. High Pressure Phys. 17 173(in Chinese)[陈其峰、 蔡灵仓、 陈栋泉、 经福谦、赵宪庚 2003 高压 17 173] 〖13] Ree F H 1983 J. Chem. Phys. 78 409
[13] Gu Y J, Chen Q F, Cai L C, Chen Z Y, Zheng J, Jing F Q 2009 J. Chem. Phys. 130 184506
[14] Ternovoi V Y, Kvitov S V, Pyalling A A, Filimonov A S, Fortov V E 2004 JETP Lett. 796
[15] Chen Q F, Cai L C, Zhang Y, Gu Y J, Jing F Q 2006 J. Chem. Phys. 124 074510
[16] Chen Q F, Cai L C, Zhang Y, Gu Y J 2008 J. Chem. Phys. 128 104512
[17] Chen Q F, Zhang Y, Cai L C, Gu Y J, Jing F Q 2007 Phys. Plasmas 14 012703
[18] Zhang Y, Chen Q F, Gu Y J, Cai L C, Lu T C 2007 Acta Phys. Sin. 56 1318(in Chinese) [张 颖、陈其峰、顾云军、蔡灵仓、卢铁城 2007 56 1318]
[19] Chen Q F, Cai L C, Gu Y J, Gu Y 2009 Phys. Rev. E 79 016409
[20] Juranek H, Redmer R 2000 J. Chem. Phys. 112 3780
[21] Ebeling W, Frster A, Fortov V E, Gryaznov V K, Polishchuk A Y 1991 Thermophysical Properties of Hot Dense Plasmas (Stuttgart.Leipzig:Teubner Verlagsgesellschaft )p24
[22] van Thiel M, Ree F H 1996 J. Chem. Phys. 104 5019
[23] Ross M 1987 J. Chem. Phys. 86 7110
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[1] Kowalski P M, Mazevet S, Saumon D, Challacombe M 2007 Phys.Rev.B 76 075112
[2] Redmer R, Holst B, Juranek H, Nettelmann N, Schwarz V 2006 J. Phys. A 39 4479
[3] Chabrier G, Saumon D, Potekhin A Y 2006 J. Phys. A 39 4411
[4] Saumon D, Chabrier G, van Horn H M 1995 Astrophys. J. Suppl. Ser. 99 713
[5] Eggert J, Brygoo S, Loubeyre P, McWilliams R S, Celliers P M, Hicks D G, Boehly T R, Jeanloz R, Collins G W 2008 Phys. Rev. Lett. 100 124503
[6] Boriskov G V, Bykov A I, II'kaev R I, Selemir V D, Simakov G V, Trunin R F, Urlin V D, Shuikin A N 2005 Phys. Rev. B 71 092104
[7] Boehly T R, Hicks D G, Celliers P M, Collins T J B, Earley R, Eggert J H, Jacobs-Perkins D, Moon S J, Vianello E, Meyerhofer D D, Collins G W 2004 Phys. Plasmas 11 L49
[8] Knudson M D, Hanson D L, Bailey J E, Hall C A, Asay J R, Deeney C 2004 Phys. Rev. B 69 144209
[9] Nellis W J, Weir S T, Mitchell A C 1999 Phys. Rev. B 59 3434
[10] Holmes N C, Ross M, Nellis W J 1995 Phys. Rev. B 52 15835
[11] Xue X Y, Sun J X 2007 Chem. Phys. 337 39
[12] Chen Q F, Cai L C, Chen D Q, Jing F Q, Zhao X G 2003 Chin. J. High Pressure Phys. 17 173(in Chinese)[陈其峰、 蔡灵仓、 陈栋泉、 经福谦、赵宪庚 2003 高压 17 173] 〖13] Ree F H 1983 J. Chem. Phys. 78 409
[13] Gu Y J, Chen Q F, Cai L C, Chen Z Y, Zheng J, Jing F Q 2009 J. Chem. Phys. 130 184506
[14] Ternovoi V Y, Kvitov S V, Pyalling A A, Filimonov A S, Fortov V E 2004 JETP Lett. 796
[15] Chen Q F, Cai L C, Zhang Y, Gu Y J, Jing F Q 2006 J. Chem. Phys. 124 074510
[16] Chen Q F, Cai L C, Zhang Y, Gu Y J 2008 J. Chem. Phys. 128 104512
[17] Chen Q F, Zhang Y, Cai L C, Gu Y J, Jing F Q 2007 Phys. Plasmas 14 012703
[18] Zhang Y, Chen Q F, Gu Y J, Cai L C, Lu T C 2007 Acta Phys. Sin. 56 1318(in Chinese) [张 颖、陈其峰、顾云军、蔡灵仓、卢铁城 2007 56 1318]
[19] Chen Q F, Cai L C, Gu Y J, Gu Y 2009 Phys. Rev. E 79 016409
[20] Juranek H, Redmer R 2000 J. Chem. Phys. 112 3780
[21] Ebeling W, Frster A, Fortov V E, Gryaznov V K, Polishchuk A Y 1991 Thermophysical Properties of Hot Dense Plasmas (Stuttgart.Leipzig:Teubner Verlagsgesellschaft )p24
[22] van Thiel M, Ree F H 1996 J. Chem. Phys. 104 5019
[23] Ross M 1987 J. Chem. Phys. 86 7110
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