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The modified screened Coulomb potential is obtained with considering the changes of plasma number density. Both the analytical results and molecular dynamical simulation show that the modification due to the changes of number density has a minor effect on the dynamical and structural properties of the two-dimensional dusty plasmas. However, further modifications including such as the particle size, ion drag force and pressure force possibly change the profile of the spherically asymmetric Coulomb potential. Motivated by the above speculation, the modified screened Coulomb potential with a set of margin parameters is used to investigate the dynamical and structural properties of the two-dimensional dusty plasmas. It is found that the diffusion of system is extensively decreased, particularly, a circle configuration is formed, which is similar ho the experimental observation of spherical assemble. Additionally, a uniform magnetic field is used to investigate the effects on the dynamical and structural properties of the two-dimensional dusty plasmas.
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Keywords:
- modified screened Coulomb potential /
- two-dimensional dusty plasmas /
- molecular dynamical simulation
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[2] Thomas H, Morfill G E, Demmel V 1994 Phys. Rev. Lett. 73 652
[3] Kong W, Wang X, Liu S F, Hu B L, Wang L 2007 Commun. Theor. Phys. 47 569
[4] Kong W, Liu S F, Wang Q L, Hu B L, Wang L 2007 J. Phys. A Math. Theor. 40 1171
[5] Liu S F, Wang X, Hu B L, Wang L, Liu Y H 2005 J. Phys. A Math. Gen. 38 1
[6] Liu B, Liu Y H, Chen Y P, Yang S Z, Wang L 2003 Chin. Phys. 12 765
[7] Liu Y H, Liu B, Yang S Z, Wang L 2002 J. Phys. A Math. Gen. 35 9535
[8] Hua J J, Liu Y H, Ye M F, Wang L, Zhang Z H 2003 Chin. Phys. Lett. 20 155
[9] Yang X F, Wang X G, Liu Y 2009 Chin. Phys. B 18 4938
[10] Zhang L P, Xue J K 2008 Chin. Phys. B 17 2594
[11] Xue J K 2006 Chin. Phys. 15 562
[12] Huang F, Ye M F, Wang L, Jiang N 2004 Chin. Phys. 13 1896
[13] Sun X X, Wang C H, Wang X G 2007 Chin. Phys. Lett. 24 771
[14] Ren L W, Wang Z X, Liu Y 2007 Chin. Phys. Lett. 24 767
[15] Sun X W, Chu Y D, Liu Z J, Liu Y X, Wang C W, Liu W M 2005 Acta Phys. Sin. 54 5830 (in Chinese) [孙小伟, 褚衍东, 刘子江, 刘玉孝, 王成伟, 刘维民 2005 54 5830]
[16] Li P, Ning X J, Wang Y 2005 Acta Phys. Sin. 54 2847(in Chinese) [李鹏, 宁西京, 王音 2005 54 2847]
[17] Hou L J, Wang Y N 2003 Acta Phys. Sin. 52 0434 (in Chinese) [侯璐景, 王友年 2003 52 0434]
[18] Liu J Y, Chen L, Wang F, Wang N, Duan P 2010 Acta Phys. Sin. 59 8692 (in Chinese) [刘金远, 陈龙, 王丰, 王楠, 段萍 2010 59 8692]
[19] Xi Y B, Zhang Y, Wang X G, Liu Y, Yu H, Jiang D G 2005 Acta Phys. Sin. 54 165 (in Chinese) [奚衍斌, 张宇, 王晓刚, 刘悦, 余虹, 姜东光 2005 54 165]
[20] Resendes D R, Mendonca J T, Shukla P K 1998 Phys. Lett. A 239 181
[21] Hamaguchi S, Rarouki R T 1994 Phys. Rev. E 49 4430
[22] Choi S J, Kushner M J 1993 Appl. Phys. Lett. 62 2197
[23] Boeuf J P 1992 Phys. Rev. A 46 7910
[24] Liu Y H, Liu B, Yang S Z, Wang L 2002 J. Phys. A Math. Theor. 35 9535
[25] Oliver Arp, Dietmar Block, Alexander Piel 2004 Phys. Rev. Lett. 93 165004
[26] Wang Z X, Liu J Y, Zou X, Liu Y, Wang X G 2004 Acta Phys. Sin. 53 0793 (in Chinese) [王正汹, 刘金远, 邹秀, 刘悦, 王晓刚 2004 53 0793]
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[1] Chu J H, Lin I 1994 Phys. Rev. Lett. 72 4009
[2] Thomas H, Morfill G E, Demmel V 1994 Phys. Rev. Lett. 73 652
[3] Kong W, Wang X, Liu S F, Hu B L, Wang L 2007 Commun. Theor. Phys. 47 569
[4] Kong W, Liu S F, Wang Q L, Hu B L, Wang L 2007 J. Phys. A Math. Theor. 40 1171
[5] Liu S F, Wang X, Hu B L, Wang L, Liu Y H 2005 J. Phys. A Math. Gen. 38 1
[6] Liu B, Liu Y H, Chen Y P, Yang S Z, Wang L 2003 Chin. Phys. 12 765
[7] Liu Y H, Liu B, Yang S Z, Wang L 2002 J. Phys. A Math. Gen. 35 9535
[8] Hua J J, Liu Y H, Ye M F, Wang L, Zhang Z H 2003 Chin. Phys. Lett. 20 155
[9] Yang X F, Wang X G, Liu Y 2009 Chin. Phys. B 18 4938
[10] Zhang L P, Xue J K 2008 Chin. Phys. B 17 2594
[11] Xue J K 2006 Chin. Phys. 15 562
[12] Huang F, Ye M F, Wang L, Jiang N 2004 Chin. Phys. 13 1896
[13] Sun X X, Wang C H, Wang X G 2007 Chin. Phys. Lett. 24 771
[14] Ren L W, Wang Z X, Liu Y 2007 Chin. Phys. Lett. 24 767
[15] Sun X W, Chu Y D, Liu Z J, Liu Y X, Wang C W, Liu W M 2005 Acta Phys. Sin. 54 5830 (in Chinese) [孙小伟, 褚衍东, 刘子江, 刘玉孝, 王成伟, 刘维民 2005 54 5830]
[16] Li P, Ning X J, Wang Y 2005 Acta Phys. Sin. 54 2847(in Chinese) [李鹏, 宁西京, 王音 2005 54 2847]
[17] Hou L J, Wang Y N 2003 Acta Phys. Sin. 52 0434 (in Chinese) [侯璐景, 王友年 2003 52 0434]
[18] Liu J Y, Chen L, Wang F, Wang N, Duan P 2010 Acta Phys. Sin. 59 8692 (in Chinese) [刘金远, 陈龙, 王丰, 王楠, 段萍 2010 59 8692]
[19] Xi Y B, Zhang Y, Wang X G, Liu Y, Yu H, Jiang D G 2005 Acta Phys. Sin. 54 165 (in Chinese) [奚衍斌, 张宇, 王晓刚, 刘悦, 余虹, 姜东光 2005 54 165]
[20] Resendes D R, Mendonca J T, Shukla P K 1998 Phys. Lett. A 239 181
[21] Hamaguchi S, Rarouki R T 1994 Phys. Rev. E 49 4430
[22] Choi S J, Kushner M J 1993 Appl. Phys. Lett. 62 2197
[23] Boeuf J P 1992 Phys. Rev. A 46 7910
[24] Liu Y H, Liu B, Yang S Z, Wang L 2002 J. Phys. A Math. Theor. 35 9535
[25] Oliver Arp, Dietmar Block, Alexander Piel 2004 Phys. Rev. Lett. 93 165004
[26] Wang Z X, Liu J Y, Zou X, Liu Y, Wang X G 2004 Acta Phys. Sin. 53 0793 (in Chinese) [王正汹, 刘金远, 邹秀, 刘悦, 王晓刚 2004 53 0793]
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