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The implosion dynamics of wire array Z pinch can be divided into four stages: (1) wire ablation; (2) formation of plasma shell; (3) implosion; (4) stagnation. Based on the optical-framing camera and the soft X-ray framing camera, lots of experiments on the early stage of wire array Z pinch and imploding dynamics have been carried out. Images of wire array Z pinch from wire ablation to plasma column breakdown were obtained. The main results were as follows: (1) There is a long ablation stage, and the wire ablation is not uniform along the axis. The imploding experimental trajectory is consistent with the phenomenological model. (2) The cathode emission is obviously observed in both optical images and X ray images. In the late stage of implosion, there is obvious trailing radiation distribution around the cathode. (3) The precursor plasma column is formed after the collision of the ablating plasma at the axis, which expands at first, then becomes compressed. (4) The temperature and ionization stage of corona plasma were estimated according to its azimuthally expanding velocity.
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Keywords:
- wire array /
- implosion dynamics /
- Z pinch /
- pulsed power technology
[1] Hussey W 1990 J. Appl. Phys. 51 1452
[2] Ryutov D D, Derzon M S, Matzen M K 2000, Reviews of Modern Physics 72 167
[3] Sanford T W L, Allshouse G O, Marder B M, Nash T J, Mock R C, Spielman R B, Seamen J F, McGurn J S, Jobe D, Gilliland T L, Vargas M, Struve K W, Stygar W A, Douglas M R, Matzen M K, Hammer J H, DeGroot J S, Eddleman J L, Peterson D L, Mosher D, Whitney K G, Thornhill J W, Pulsifer P E, Apruzese J P, Maron Y 1996 Physical Review Letters 77 5063
[4] Deeney C, Douglas M R, Spielman R B, Nash T J, Peterson D L, ’Eplattenier P L, Chandler G A, Seamen J F, Strve K W 1998 Physical Review Letters 81 4883
[5] Lebedev S V, Beg F N, Bland S N, Chittenden J P, Dangor A E, Haines M G, Kwek K H, Pikuz S A, Shelkovenko T A 2001 Phys. Plasmas 8 3734
[6] Xia G X, Zhang F Q, Xu Z P, Xu R K, Chen J C, Ning J M 2010 Acta Phys Sin. 59 97(in Chinese) [夏广新、章法强、许泽平、徐荣昆、陈进川、宁家敏 2010 59 97]
[7] Qiu A C, Kuai B, Zeng Z Z, Wang W S, Qiu M T, Wang L P, Cong P T, Lü M 2006 Acta. Phys. Sin. 55 5917 (in Chinese) [邱爱慈、蒯斌、曾正中、王文生、邱孟通、王亮平、从培天、吕 敏 2006 55 5917]
[8] Ye F, Li Z H, Qin Y, Jiang S Q, Xue F B, Yang J L, Xu R K, Jin Y J. 2010 Chin. Phys. B 19 075204
[9] Sheng L, Wei F L, Lü M, Wang K L, Qiu A C, Hei D W, Qiu M T, Yuan Y, Zhao J Z, Wang P W 2006 High Power Laser and Particle Beams 18 1936 (in Chinese) [盛 亮、魏福利、吕 敏、王奎禄、邱爱慈、黑东炜、邱孟通、袁 媛、赵吉祯、王培伟 2006 强激光与粒子束 18 1936]
[10] Qiu M T, Lü M, Wang K L, Hei D W, Qiu A C, Zeng Z Z, Du J Y, Kuai B, Yuan Y, Tian H, Sun F R, Luo J H 2003 High Power Laser and Particle Beams 15 101 (in Chinese) [邱孟通、吕 敏、王奎禄、黑东炜、邱爱慈、曾正中、杜继业、蒯 斌、袁 媛、田 慧、孙凤荣、罗建辉 2003 强激光与粒子束 15 101]
[11] Haines M G 1998 IEEE Transactions on Plasma Science 26 1275
[12] Aleksandrov V V, Branitskii A V, Volkov G S, Grabovskii E V, Zurin M V, Nedoseev S L, Oleinik G M, Samokhin A A, Sasorov P V, Smirnov V P, Fedulov M V, Frolov I N 2001 Plasma Physics Reports 27 89
[13] Duan Y Y, Guo Y H, Wang W S, Qiu A C 2004 Acta Phys Sin. 53 2654 (In Chinese) [段耀勇、郭永辉、王文生、邱爱慈 2004 53 2654]
[14] Salzmann Davis 1998 Atomic physics in hot plasmas (New York, USA: Oxford University Press)
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[1] Hussey W 1990 J. Appl. Phys. 51 1452
[2] Ryutov D D, Derzon M S, Matzen M K 2000, Reviews of Modern Physics 72 167
[3] Sanford T W L, Allshouse G O, Marder B M, Nash T J, Mock R C, Spielman R B, Seamen J F, McGurn J S, Jobe D, Gilliland T L, Vargas M, Struve K W, Stygar W A, Douglas M R, Matzen M K, Hammer J H, DeGroot J S, Eddleman J L, Peterson D L, Mosher D, Whitney K G, Thornhill J W, Pulsifer P E, Apruzese J P, Maron Y 1996 Physical Review Letters 77 5063
[4] Deeney C, Douglas M R, Spielman R B, Nash T J, Peterson D L, ’Eplattenier P L, Chandler G A, Seamen J F, Strve K W 1998 Physical Review Letters 81 4883
[5] Lebedev S V, Beg F N, Bland S N, Chittenden J P, Dangor A E, Haines M G, Kwek K H, Pikuz S A, Shelkovenko T A 2001 Phys. Plasmas 8 3734
[6] Xia G X, Zhang F Q, Xu Z P, Xu R K, Chen J C, Ning J M 2010 Acta Phys Sin. 59 97(in Chinese) [夏广新、章法强、许泽平、徐荣昆、陈进川、宁家敏 2010 59 97]
[7] Qiu A C, Kuai B, Zeng Z Z, Wang W S, Qiu M T, Wang L P, Cong P T, Lü M 2006 Acta. Phys. Sin. 55 5917 (in Chinese) [邱爱慈、蒯斌、曾正中、王文生、邱孟通、王亮平、从培天、吕 敏 2006 55 5917]
[8] Ye F, Li Z H, Qin Y, Jiang S Q, Xue F B, Yang J L, Xu R K, Jin Y J. 2010 Chin. Phys. B 19 075204
[9] Sheng L, Wei F L, Lü M, Wang K L, Qiu A C, Hei D W, Qiu M T, Yuan Y, Zhao J Z, Wang P W 2006 High Power Laser and Particle Beams 18 1936 (in Chinese) [盛 亮、魏福利、吕 敏、王奎禄、邱爱慈、黑东炜、邱孟通、袁 媛、赵吉祯、王培伟 2006 强激光与粒子束 18 1936]
[10] Qiu M T, Lü M, Wang K L, Hei D W, Qiu A C, Zeng Z Z, Du J Y, Kuai B, Yuan Y, Tian H, Sun F R, Luo J H 2003 High Power Laser and Particle Beams 15 101 (in Chinese) [邱孟通、吕 敏、王奎禄、黑东炜、邱爱慈、曾正中、杜继业、蒯 斌、袁 媛、田 慧、孙凤荣、罗建辉 2003 强激光与粒子束 15 101]
[11] Haines M G 1998 IEEE Transactions on Plasma Science 26 1275
[12] Aleksandrov V V, Branitskii A V, Volkov G S, Grabovskii E V, Zurin M V, Nedoseev S L, Oleinik G M, Samokhin A A, Sasorov P V, Smirnov V P, Fedulov M V, Frolov I N 2001 Plasma Physics Reports 27 89
[13] Duan Y Y, Guo Y H, Wang W S, Qiu A C 2004 Acta Phys Sin. 53 2654 (In Chinese) [段耀勇、郭永辉、王文生、邱爱慈 2004 53 2654]
[14] Salzmann Davis 1998 Atomic physics in hot plasmas (New York, USA: Oxford University Press)
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