双层喷气Z箍缩氖等离子体K层辐射研究

吴刚; 邱爱慈; 王亮平; 吕敏; 邱孟通; 丛培天

doi:10.7498/aps.60.015203

摘要

报道了"强光一号"(1.6 MA,70 ns)加速器驱动双层喷Ne气Z箍缩负载产生K层辐射(光子能量约1 keV)的实验研究.喷气负载出口半径为1.5—1.4 cm和0.75—0.6 cm(半径比2 ∶1).充气压力相同情况下外层和内层质量比约2.8 ∶1.在内爆时间约120 ns、负载线质量估计值60—70 μg/cm时,获得K层辐射产额约7 kJ、峰值功率0.28 TW,脉冲宽度20 ns.X射线分幅图像表明内爆阶段的不稳定性影响较小,最终内爆速度超过25 cm/μs,等离

关键词:

Abstract

The main results of investigation on K-shell X-ray production of double-shell neon gas puff Z-pinch, driven by Qiangguang-I facility (1.6 MA, 70 ns), are reported. The exit radii of the outer and inner shells are 1.5—1.4 cm and 0.75—0.6 cm, respectively. Both shells have a throat width of 0.32 mm, while the ratio of the throat radii is 2.8 ∶1, to which the mass ratio would be approximately equal for identical plenum pressures. K-shell yield and peak power up to 7 kJ and 0.28 TW, respectively, for a 20 ns full width at half maximum pulse have been obtained with about 120 ns implosions, the load mass per unit length of which are estimated to be 60—70 μg/cm. Time-resolved X-ray images show that RT instability during the implosion stage has been well suppressed, resulting in a final pinch diameter compressed to less than 2.5 mm. The final implosion velocity exceeds 25 cm/μs. K-shell yields and peak powers are largely reduced with longer implosion time. For shots with lower mass, i.e. 28—63 μg/cm, the electron temperature inferred from time-gated K-shell spectra should be greater than 500 eV, implying an overheated plasma column being formed in the stagnation stage. While for shots with load mass of 72—80 μg/cm, time resolved electron temperatures are in the range of 300—400 eV. The inferred ion densities of the K-shell emitting region are in the range of (3—9)×1019 cm-3, which have been used to calculate the mass fractions that contribute to K-shell radiation. Those shots with near 7 kJ yields also have maximum K-shell emitting load mass (about 46 μg/cm).

Keywords:

作者及机构信息

(1)清华大学工程物理系,北京 100084; (2)清华大学工程物理系,北京 100084;西北核技术研究所,西安 710024; (3)西北核技术研究所,西安 710024

基金项目: 国家自然科学基金(批准号:10635050和10475065)资助的课题.

Authors and contacts

(1)Department of Engineering Physics, Tsinghua University,Beijing 100084, China; (2)Department of Engineering Physics, Tsinghua University,Beijing 100084, China;Northwest Institute of Nuclear Technology, Xi'an 710024, China; (3)Northwest Institute of Nuclear Technology, Xi'an 710024, China

参考文献

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[2]	Qiu A C 2000 Engineering Science 2 24 (in Chinese) [邱爱慈 2000 中国工程科学 2 24]
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[9]	Kuai B, Cong P T, Zeng Z Z, Qiu A C, Qiu M T, Chen H, Liang T X, He W L, Wang L P, Zhang Z 2002 Plas. Sci. Tech. 4 1329
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[14]	Qiu A C, Kuai B, Wang L P, Wu G, Cong P T 2008 High Power Laser and Particle Beams 20 1911 (in Chinese) [邱爱慈、蒯斌、王亮平、吴刚、丛培天 2008 强激光与粒子束 20 1911]
[15]	Chung H K, Chen M H, Morgan W L, Ralchenko Y, Lee R W 2005 High Energy Density Physics 1 3
[16]	Apruzese J P, Whitney K G, Davis J, Kepple P C 1997 J. Quant. Spectrosc. Radiat. Transfer 57 41
[17]	Qiu M T, Lv 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]
[18]	Wu G, Qiu A C, Lv M, Hei D W, Sheng L, Wei F L, Kuai B, Wang L P, Cong P T, Lei T S, Han J J, Sun T P 2009 High Power Laser and Particle Beams 21 1115 (in Chinese) [吴刚、邱爱慈、吕敏、黑东炜、盛亮、魏福利、蒯斌、王亮平、丛培天、雷天时、韩娟娟、孙铁平 2009 强激光与粒子束 21 1115]
[19]	Mosher D, Weber B V, Moosman B, Commisso R J, Coleman P, Waisman E, Sze H, Song Y, Parks D, Steen P, Levine J, Failor B, Fisher A 2001 Laser and Particle Beams 19 579
[20]	Douglas M R, Deeney C, Roderick N F 1997 Phys. Rev. Lett. 78 4577
[21]	Commisso R J, Apruzese J P, Black D C, Boller J R, Moosman B, Mosher D, Stephanakis S J, Weber B V, Young F C 1998 IEEE Trans. Plasma Sci. 26 1068
[22]	Thornhill J W, Velikovich A L, Clark R W, Apruzese J P, Davis J, Whitney K G, Coleman P L, Coverdale C A, Deeney C, Jones B M, LePell P D 2006 IEEE Trans. Plasma Sci. 34 2377
[23]	Velikovich A L, Cochran F L, Davis J 1996 Phys. Rev. Lett. 77 853
[24]	DeGroot J S, Toor A, Golberg S M, Liberman M A 1997 Phys. Plasmas 4 737
[25]	Sze H, Coleman P L, Failor B H, Fisher A, Levine J S, Song Y, Waisman E M, Apruzese J P, Chong Y K, Davis J, Cochran F L, Thornhill J W, Velikovich A L, Weber B V, Deeney C, Coverdale C A, Schneider R 2000 Phys. Plasmas 7 4223
[26]	Deeney C, Douglas M R, Spielman R B, Nash T J, Peterson D L, LEplattenier P, Chandler G A, Seamen, J F, Struve K W 1998 Phys. Rev. Lett. 81 4883

施引文献

[1]	Hua X S, Peng X J 2009 High Power Laser and Particle Beams 21 801 (in Chinese) [华欣生、彭先觉 2009 强激光与粒子束 21 801]
[2]	Qiu A C 2000 Engineering Science 2 24 (in Chinese) [邱爱慈 2000 中国工程科学 2 24]
[3]	Wu G, Qiu A C, Lv M, Kuai B, Wang L P, Cong P T, Qiu M T, Lei T S, Sun T P, Guo N, Han J J, Zhang X J, Huang T, Zhang G W, Qiao K L 2009 Acta Phys. Sci. 58 4779 (in Chinese) [吴刚、邱爱慈、吕敏、蒯斌、王亮平、丛培天、邱孟通、雷天时、孙铁平、郭宁、韩娟娟、张信军、黄涛、张国伟、乔开来 2009 58 4779]
[4]	Spielman R B, Deeney C, Chandler G A, Douglas M R, Fehl D L, Matzen M K, McDaniel D H, Nash T J, Porter J L, Sanford T W L, Seamen J F, Stygar W A, Struve K W, Breeze S P, McGurn J S, Torres J A, Zagar D M, Gilliland T L, Jobe D O, McKenney J L, Mock R C, Vargas M, Wagoner T, Peterson D L 1998 Phys. Plasmas 5 2105
[5]	Coverdale C A, Deeney D, Jones B, Thornhill J W, Whitney K G, Velikovich A L, Clark R W, Chong Y K, Apruzese J P, Davis J, Lepell P D 2007 IEEE Trans. Plasma Sci. 35 582
[6]	Sze H, Levine J S, Banister J, Failor B H, Qi N, Steen P, Velikovich A L, Davis J, Wilson A 2007 Phys. Plasmas 14 056307
[7]	Xu R K, Li Z H, Ning J M, Guo C, Xu Z P, Yang J L, Li L B, Xia G X, Hua X S, Ding N, Liu Q, Gu Y C, Grabovsky E V, Oleynic G M, Nedoseev S L, Alexandro V V, Mitrofanov K N, Zurin M V, Volkov G S, Porofeev I A, Frolov I N, Smirnov V P 2005 Chin. Phys. 14 1613
[8]	Qiu A C, Kuai B, Zeng Z Z, Wang W S, Qiu M T, Wang L P, Cong P T, Lv 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、丛培天、吕敏 2006 55 5917]
[9]	Kuai B, Cong P T, Zeng Z Z, Qiu A C, Qiu M T, Chen H, Liang T X, He W L, Wang L P, Zhang Z 2002 Plas. Sci. Tech. 4 1329
[10]	Huang X B, Yang L B, Gu Y C, Deng J J, Zhou R G, Zou J, Zhou S T, Zhang S Q, Chen G H, Chang L H, Li F P, Ouyang K, Li J, Yang L, Wang X, Zhang Z H 2006 Acta Phys. Sin. 55 1900 (in Chinese) [黄显宾、杨礼兵、顾元朝、邓建军、周荣国、邹杰、周少彤、张思群、陈光华、畅里华、李丰平、欧阳凯、李军、杨亮、王雄、张朝辉 2006 55 1900]
[11]	Ren X D, Huang X B, Zhou S T, Zhang S Q, Li J, Yang L B, Li P 2009 Acta Phys. Sin. 58 7067 (in Chinese) [任晓东、黄显宾、周少彤、张思群、李晶、杨礼兵、李平 2009 58 7067]
[12]	Stephanakis S J, Apruzese J P, Burkhalter P G, Davis J, Meger R A, McDonald S W, Mehlman G, Ottinger P F, Young F C 1986 Appl. Phys. Lett. 48 829
[13]	Deeney C, LePell P D, Roth I, Nash T, Warren L, Prasad R R, Coulter M C, Whitney K G 1992 J. Appl. Phys. 72 1297
[14]	Qiu A C, Kuai B, Wang L P, Wu G, Cong P T 2008 High Power Laser and Particle Beams 20 1911 (in Chinese) [邱爱慈、蒯斌、王亮平、吴刚、丛培天 2008 强激光与粒子束 20 1911]
[15]	Chung H K, Chen M H, Morgan W L, Ralchenko Y, Lee R W 2005 High Energy Density Physics 1 3
[16]	Apruzese J P, Whitney K G, Davis J, Kepple P C 1997 J. Quant. Spectrosc. Radiat. Transfer 57 41
[17]	Qiu M T, Lv 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]
[18]	Wu G, Qiu A C, Lv M, Hei D W, Sheng L, Wei F L, Kuai B, Wang L P, Cong P T, Lei T S, Han J J, Sun T P 2009 High Power Laser and Particle Beams 21 1115 (in Chinese) [吴刚、邱爱慈、吕敏、黑东炜、盛亮、魏福利、蒯斌、王亮平、丛培天、雷天时、韩娟娟、孙铁平 2009 强激光与粒子束 21 1115]
[19]	Mosher D, Weber B V, Moosman B, Commisso R J, Coleman P, Waisman E, Sze H, Song Y, Parks D, Steen P, Levine J, Failor B, Fisher A 2001 Laser and Particle Beams 19 579
[20]	Douglas M R, Deeney C, Roderick N F 1997 Phys. Rev. Lett. 78 4577
[21]	Commisso R J, Apruzese J P, Black D C, Boller J R, Moosman B, Mosher D, Stephanakis S J, Weber B V, Young F C 1998 IEEE Trans. Plasma Sci. 26 1068
[22]	Thornhill J W, Velikovich A L, Clark R W, Apruzese J P, Davis J, Whitney K G, Coleman P L, Coverdale C A, Deeney C, Jones B M, LePell P D 2006 IEEE Trans. Plasma Sci. 34 2377
[23]	Velikovich A L, Cochran F L, Davis J 1996 Phys. Rev. Lett. 77 853
[24]	DeGroot J S, Toor A, Golberg S M, Liberman M A 1997 Phys. Plasmas 4 737
[25]	Sze H, Coleman P L, Failor B H, Fisher A, Levine J S, Song Y, Waisman E M, Apruzese J P, Chong Y K, Davis J, Cochran F L, Thornhill J W, Velikovich A L, Weber B V, Deeney C, Coverdale C A, Schneider R 2000 Phys. Plasmas 7 4223
[26]	Deeney C, Douglas M R, Spielman R B, Nash T J, Peterson D L, LEplattenier P, Chandler G A, Seamen, J F, Struve K W 1998 Phys. Rev. Lett. 81 4883

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