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The high-energy H++H impact excitation process in Debye plasma is investigated using impact parameter Born approximation method. In the cases of several different values of Debye length D, the inter-nuclear distance R of matrix elements, the weighted probability at a collision energy of 160 keV/u, and impact excitation cross sections in an energy range of 100–1000 keV/u for direct 1s → 2p transition in H for both the unscreened and screened Coulomb interactions are calculated. It is demonstrated that the magnitude of impact excitation cross section gradually reduces as screening parameter increases. According to the excitation cross section formula and the calculated results, a detailed analysis of the reason for the reduction caused by excitation cross section is given in this paper. The effects of screened Coulomb interaction on the potential of between incident particles and excited electronic and on the hydrogenatomic structure (wave function and energy level) have very important influence on the excitation cross section.
[1] Salzman D 1998 Atomic Physics in Hot Plasmas (Oxford: Oxford University Press)
[2] Murillo M S, Weisheit J C 1998 Phys. Rep. 302 1
[3] Ning L N, Qi Y Y 2012 Chin. Phys. B 21 123201
[4] Scheibner K, Weisheit J C, Lane N F 1987 Phys. Rev. A 35 1252
[5] Zeng S L, Liu L, Wang J G, Janev R K 2008 J. Phys. B: At. Mol. Phys. 41 135202
[6] Zhang H, Wang J G, He B, Qiu Y B, Janev R K 2007 Phys. Plasmas 14 053505
[7] Liu L, Wang J G, Janev R K 2008 Phys. Rev. A 77 032709
[8] Zhang H, He B, Wang J G 2007 J. Atom. Mol. Phys. (Suppl.) 65 (in Chinese) [张弘, 何斌, 王建国 2007 原子与分子 (增刊) 65]
[9] Liu L, Wang J G, Janev R K 2007 J. Atom. Mol. Phys. (Suppl.) 61 (in Chinese) [刘玲, 王建国, Janev R K 2007 原子与分子 (增刊) 61]
[10] Ding D, He B, Liu L, Zhang C H, Wang J G 2009 Acta Phys. Sin. 58 8419 (in Chinese) [丁丁, 何斌, 刘玲, 张程华, 王建国 2009 58 8419]
[11] Qi Y Y, Wu Y, Wang J G, Qu Y Z 2009 Phys. Plasmas 16 023502
[12] Mandal C R, Mandal M, Mukherjee S C 1990 Phys. Rev. A 42 1787
[13] Detleffsen D, Anton M, Werner A, Schartner K H 1994 J. Phys. B: At. Mol. Phys. 41 4195
[14] Mcdowell M R C, Coleman J P 1970 Introduction to the Theory of Ion-Atom Collisions (London: North-Holland)
[15] Zhang S B 2011 Ph. D. Dissertation (Heifei: University of Science and Technology of China) (in Chinese) [张松斌 2011 博士学位论文 (合肥: 中国科技大学)]
[16] Arfken G B, Weber H J 2005 Mathematical Methods for Physics (San Diego: Elsevier Academic Press)
[17] Qi Y Y, Wang J G, Janev R K 2008 Phys. Rev. A 78 062511
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[1] Salzman D 1998 Atomic Physics in Hot Plasmas (Oxford: Oxford University Press)
[2] Murillo M S, Weisheit J C 1998 Phys. Rep. 302 1
[3] Ning L N, Qi Y Y 2012 Chin. Phys. B 21 123201
[4] Scheibner K, Weisheit J C, Lane N F 1987 Phys. Rev. A 35 1252
[5] Zeng S L, Liu L, Wang J G, Janev R K 2008 J. Phys. B: At. Mol. Phys. 41 135202
[6] Zhang H, Wang J G, He B, Qiu Y B, Janev R K 2007 Phys. Plasmas 14 053505
[7] Liu L, Wang J G, Janev R K 2008 Phys. Rev. A 77 032709
[8] Zhang H, He B, Wang J G 2007 J. Atom. Mol. Phys. (Suppl.) 65 (in Chinese) [张弘, 何斌, 王建国 2007 原子与分子 (增刊) 65]
[9] Liu L, Wang J G, Janev R K 2007 J. Atom. Mol. Phys. (Suppl.) 61 (in Chinese) [刘玲, 王建国, Janev R K 2007 原子与分子 (增刊) 61]
[10] Ding D, He B, Liu L, Zhang C H, Wang J G 2009 Acta Phys. Sin. 58 8419 (in Chinese) [丁丁, 何斌, 刘玲, 张程华, 王建国 2009 58 8419]
[11] Qi Y Y, Wu Y, Wang J G, Qu Y Z 2009 Phys. Plasmas 16 023502
[12] Mandal C R, Mandal M, Mukherjee S C 1990 Phys. Rev. A 42 1787
[13] Detleffsen D, Anton M, Werner A, Schartner K H 1994 J. Phys. B: At. Mol. Phys. 41 4195
[14] Mcdowell M R C, Coleman J P 1970 Introduction to the Theory of Ion-Atom Collisions (London: North-Holland)
[15] Zhang S B 2011 Ph. D. Dissertation (Heifei: University of Science and Technology of China) (in Chinese) [张松斌 2011 博士学位论文 (合肥: 中国科技大学)]
[16] Arfken G B, Weber H J 2005 Mathematical Methods for Physics (San Diego: Elsevier Academic Press)
[17] Qi Y Y, Wang J G, Janev R K 2008 Phys. Rev. A 78 062511
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