End-on x-ray backlighting experiments for axial diagnostics of wire-array Z-pinch plasma on PPG-1
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摘要
An X-pinch axial backlighting system has been designed to quantitatively measure the density distribution of wirearray Z-pinch plasmas. End-on backlighting experiments were carried out on a 200 kA, 100 ns pulsed-power generator(PPG-1) at the Tsinghua University. Compared with side-on backlighting, end-on measurements provide an axial view of the evolution of Z-pinch plasmas. Early stages of 2-, 4-, and 8-wire Z-pinch plasmas were observed via point-projection backlighting radiography with a relatively high success rate. The density distribution of Z-pinch plasma on the r–θ plane was obtained directly from the images with the help of step wedges, and the inward radial velocity was calculated. The ablation rates obtained by X-pinch backlighting experiments are compared in detail with those calculated by the rocket model and the results show consistency.
An X-pinch axial backlighting system has been designed to quantitatively measure the density distribution of wirearray Z-pinch plasmas. End-on backlighting experiments were carried out on a 200 kA, 100 ns pulsed-power generator(PPG-1) at the Tsinghua University. Compared with side-on backlighting, end-on measurements provide an axial view of the evolution of Z-pinch plasmas. Early stages of 2-, 4-, and 8-wire Z-pinch plasmas were observed via point-projection backlighting radiography with a relatively high success rate. The density distribution of Z-pinch plasma on the r–θ plane was obtained directly from the images with the help of step wedges, and the inward radial velocity was calculated. The ablation rates obtained by X-pinch backlighting experiments are compared in detail with those calculated by the rocket model and the results show consistency.
An X-pinch axial backlighting system has been designed to quantitatively measure the density distribution of wirearray Z-pinch plasmas. End-on backlighting experiments were carried out on a 200 kA, 100 ns pulsed-power generator(PPG-1) at the Tsinghua University. Compared with side-on backlighting, end-on measurements provide an axial view of the evolution of Z-pinch plasmas. Early stages of 2-, 4-, and 8-wire Z-pinch plasmas were observed via point-projection backlighting radiography with a relatively high success rate. The density distribution of Z-pinch plasma on the r–θ plane was obtained directly from the images with the help of step wedges, and the inward radial velocity was calculated. The ablation rates obtained by X-pinch backlighting experiments are compared in detail with those calculated by the rocket model and the results show consistency.
引文
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[18]Zhu X L,Zou X B,Zhao S,Shi H T,Zhang R,Luo H Y and Wang XX 2014 IEEE Trans.Plasma Sci.42 2522
[19]Zhao S,Zhu X L,Zhang R,Luo H Y,Zou X B and Wang X X 2014Laser Part.Beams 32 437
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[21]Beg F N,Lebedev S V,Bland S,Chittenden N J,Dangor A E and Haines M G 2002 IEEE Trans.Plasma Sci.30 552
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[25]Lebedev S V,Beg F N,Bland S N,Chittenden J P,Dangor A E,Haines M G,Pikuz S A and Shelkovenko T A 2001 Laser Part.Beams 19 355
[2]Volkov G S,Grabovskii E V,Zurin M V,Mitrofanov K N,Oleinik G Mand Porofeev I Y 2003 Instrum.Exp.Tech.47 376
[3]Kalantar D H and Hammer D A 1995 Rev.Sci.Instrum.66 779
[4]Lebedev S V,Beg F N,Bland S N,Chittenden J P,Dangor A E,Haines M G and Zakaullah M 2001 Rev.Sci.Instrum.72 671
[5]Zhao T,Zou X B,Wang X X,Zhao Y C,Du Y Q,Zhang R and Liu R2010 IEEE Trans.Plasma Sci.38 646
[6]Grabovskii E V,Mitrofanov K N,Oleinik G M and Porofeev I Y 2004Plasma Phys.Rep.30 121
[7]Kantsyrev V L,Bauer B S,Shlyaptseva A S,Fedin D A,Hansen S,Presuraa R,Batie S,Cline W,Faretto H,Galloudec B L,et al.2000Proc.SPIE 4144 51
[8]Liu R,Zou X B,Wang X X,He L Y and Zeng N G 2008 Laser Part.Beams 26 33
[9]Liu R,Wang X X,Zou X B,Zeng N G and He L Y 2008 Europhys.Lett.83 25002
[10]Liu R,Zou X B,Wang X X,Zeng N G and He L Y 2008 Laser Part.Beams 26 455
[11]Pikuz S A,Shelkovenko T A,Mingaleev A R,Romanova V M,Song B M,Chandler K M,Mitchell M D and Hammer D A 2005 Proc.SPIE5974 59740L
[12]Pikuz S A,Shelkovenko T A,Sinars D B,Chandler K M and Hammer D A 2001 Proc.SPIE 4504 234
[13]Zou X B,Liu R,Zeng N G,Han M,Yuan J Q,Wang X X and Zhang GX 2006 Laser Part.Beams 24 503
[14]Blesener I C,Greenly J B,Pikuz S A,Shelkovenko T A,Vishniakou S,Hammer D A and Kusse B R 2009 Rev.Sci.Instrum.80 123505
[15]Lebedev S V,Beg F N,Bland S N,Chittenden J P,Dangor A E,Haines M G,Kwek,K H,Pikuz S A and Shelkovenko T A 2001 Phys.Plasmas8 3734
[16]Liu R,Wang X X,Zou X B,Zeng N G,He L Y and Liu X 2007 IEEETrans.Dielectr.Electr.Insul.14 889
[17]Zhu X L,Zou X B,Zhang R,Luo H Y,Zhao S and Wang X X 2012IEEE Trans.Plasma Sci.40 3329
[18]Zhu X L,Zou X B,Zhao S,Shi H T,Zhang R,Luo H Y and Wang XX 2014 IEEE Trans.Plasma Sci.42 2522
[19]Zhao S,Zhu X L,Zhang R,Luo H Y,Zou X B and Wang X X 2014Laser Part.Beams 32 437
[20]Lebedev S V,Aliaga-Rossel R,Bland S N,Chittenden J P,Dangor AE,Haines M G and Mitchel I H 1999 Phys.Plasmas 6 2016
[21]Beg F N,Lebedev S V,Bland S,Chittenden N J,Dangor A E and Haines M G 2002 IEEE Trans.Plasma Sci.30 552
[22]Cuneo M E,Waisman E M,Lebedev S V,et al.2005 Phys.Rev.E 71046406
[23]Lebedev S V,Ampleford D J,Bland S N,et al.2005 Plasma Phys.Contr.F 47 A91
[24]Eduardo M W,Cuneo1M E,Stygar W A,Sasorov P V and Yu E P 2006Phys.Plasmas 13 062702
[25]Lebedev S V,Beg F N,Bland S N,Chittenden J P,Dangor A E,Haines M G,Pikuz S A and Shelkovenko T A 2001 Laser Part.Beams 19 355