间接驱动的内爆不对称性随腔长和时间变化的研究

黎航; 蒲昱东; 景龙飞; 林雉伟; 陈伯伦; 蒋炜; 周近宇; 黄天晅; 张海鹰; 于瑞珍; 张继彦; 缪文勇; 郑志坚; 曹柱荣; 杨家敏; 刘慎业; 江少恩; 丁永坤; 况龙钰; 胡广月; 郑坚

doi:10.7498/aps.62.225204

摘要

在激光间接驱动惯性约束聚变中, 为达到高密度压缩以实现点火, 对靶丸内爆对称性和黑腔辐射场均匀性有严格的要求. 为了研究内爆不对称性随腔长和时间的变化, 实验中采用了三种不同尺寸的黑腔, 利用X光分幅相机观测了靶丸燃料区自发光, 获得了压缩变形过程和椭圆度变化规律, 初步判断了在三种腔型中腔长1700 μm 的黑腔较接近神光Ⅲ原型装置内爆对称性要求. 根据视角因子程序计算得到辐射流不对称性随时间变化情况, 通过一个简化的解析模型推导出内爆形变不对称性随时间变化过程, 与实验结果大致符合. 由此进一步分析了黑腔辐射场不均匀性的演化导致内爆不对称性随腔长和时间变化的物理机制.

关键词:

Abstract

In order to achieve the high density compression in laser indirect-drive inertial confinement fusion, the implosion symmetry and hohlraum radiation uniformity are strictly required. To study the variations of implosion asymmetry with hohlraum length and time, three kinds of hohlraum lengths are adopted in experiment. X-ray emission from capsule fuel is measured by an X-ray framing camera. Based on measured capsule compression process and ellipticity variation, it is preliminarily judged that the medium hohlraum of 1700 μm long is the closest to implosion symmetry demand of Shenguang Ⅲ prototype laser facility. Time-resolved implosion asymmetry is derived from a simplified analytic model, in which used is the time-resolved hohlraum radiation nonuniformity derived from a view-factor code. The derived results of the time-resolved implosion asymmetry are basically in agreement with experimental results. The physical mechanism for how hohlraum radiation nonuniformity evolution induces the variations of implosion asymmetry with hohlraum length and time is analyzed.

Keywords:

作者及机构信息

1.
中国科学技术大学近代物理系, 中国科学院基础等离子体重点实验室, 合肥 230026;

2.
中国工程物理研究院激光聚变研究中心, 绵阳 621900

Authors and contacts

1.
CAS Key Laboratory of Basic Plasma Physics and Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China;

2.
Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, China

参考文献

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[23]	Pu Y D, Huang T X, Li H, Zhan X Y, Peng X S, Tang Q, Song Z F, Chen J B, Song T M, Chen M, Yu R Z, He X A, Li C G, Zhang L, Zheng J H, Jing L F, Chen B L, Su M, Jiang W, Yu B, Yan J, Li P, Lei H L, Jiang S E, Ding Y K 2012 Phys. Plasmas 19 072708
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施引文献

[1]	Lindl J D 1995 Phys. Plasmas 2 3933
[2]	Lindl J D, Amendt P, Berger R L, Glendinning S G, Glenzer S H, Haan S W, Kauffman R L, Landen O L, Suter L J 2004 Phys. Plasmas 11 339
[3]	Atzeni S, Meyer-ter-Vehn J 2003 Inertial Fusion (Oxford: Clarendon Press) p45
[4]	Jiang S E, Ding Y K, Miao W Y, Liu S Y, Zheng Z J, Zhang B H, Huang T X, Li S W, Chen J B, Jiang X H, Yi R Q, Yang G H, Yang J M, Hu X, Cao Z R, Huang Y X 2009 Sci. China G 39 1571 (in Chinese) [江少恩, 丁永坤, 缪文勇, 刘慎业, 郑志坚, 张保汉, 黄天晅, 李三伟, 陈家斌, 蒋小华, 易荣清, 杨国洪, 杨家敏, 胡昕, 曹柱荣, 黄翼翔 2009 中国科学 G辑 39 1571]
[5]	Hauer A, Delamater N, Ress D, Hsing W, Suter L, Powers L, Landen O, Harris D, Thiessen R, Magelssen G, Lindman E, Phillion D, Amendt P, Watt R, Hammel B 1995 Rev. Sci. Instrum. 66 672
[6]	Hauer A, Suter L, Delamater N, Ress D, Powers L, Magelssen G, Harris D, Landen O, Lindmann E, Hsing W, Wilson D, Amendt P, Thiessen R, Kopp R, Phillion D, Hammel B, Baker D, Wallace J, Turner R, Cray M, Watt R, Kilkenny J, Mack J 1995 Phys. Plasmas 2 2488
[7]	Turner R E, Amendt P, Landen O L, Glendinning S G, Bell P, Decker C, Hammel B A, Kalantar D, Lee D, Wallace R, Bradley D, Cable M, Craxton R S, Kremens R, Seka W, Schnittman J, Thorp K, Murphy T J, Delamater N, Barnes C W, Hauer A, Magelssen G, Wallace J 2000 Phys.Plasmas 7 333
[8]	Glenzer S H, MacGowan B J, Michel P, Meezan N B, Suter L J, Dixit S N, Kline J L, Kyrala G A, Bradley D K, Callahan D A, Dewald E L, Divol L, Dzenitis E, Edwards M J, Hamza A V, Haynam C A, Hinkel D E, Kalantar D H, Kilkenny J D, Landen O L, Lindl J D, LePape S, Moody J D, Nikroo A, Parham T, Schneider M B, Town R P J, Wegner P, Widmann K, Whitman P, Young B K F, van Wonterghem B, Atherton L J, Moses E I 2010 Science 327 1228
[9]	Kilkenny J D 1991 Laser Part. Beams 9 49
[10]	Eberhardt E H 1979 Appl. Opt. 18 1418
[11]	Cheng J X, Chang Z H 1996 High Power Laser Part. Beams 8 73 (in Chinese) [成金秀, 常增虎 1996 强激光与粒子束 8 73]
[12]	Cheng J X, Zheng Z J, Chen H S, Miao W Y, Chen B, Wang Y M, Hu X 2004 Acta Phys. Sin. 53 3419 (in Chinese) [成金秀, 郑志坚, 陈红素, 缪文勇, 陈波, 王耀梅, 胡昕 2004 53 3419]
[13]	Li H, Li S W, Zhou J Y, Zhang H Y, Cao Z R, Yi R Q, Liu S Y, Ding Y K 2009 High Power Laser Part. Beams 21 699 (in Chinese) [黎航, 李三伟, 周近宇, 张海鹰, 曹柱荣, 易荣清, 刘慎业, 丁永坤 2009 强激光与粒子束 21 699]
[14]	Sun J W 2003 High Temperature Plasma X-Ray Spectroscopy (Beijing: National Defense Industry Press) p72 (in Chinese) [孙景文 2003 高温等离子体X射线谱学(北京: 国防工业出版社) 第72页]
[15]	Rochau G A, Bailey J E, Chandler G A, Nash T J, Nielsen D S, Dunham G S, Garcia O F, Joseph N R, Keister J W, Madlener M J, Morgan D V, Moy K J, Wu M 2006 Rev. Sci. Instrum. 77 4
[16]	Yuan Z, Liu S Y, Xiao S L, Cao Z R, Li H, Wang L W 2009 Acta Photon. Sin. 38 2495 (in Chinese) [袁铮, 刘慎业, 肖沙里, 曹柱荣, 黎航, 王丽伟 2009 光子学报 38 2495]
[17]	Li H, Yang J M, Zhang H Y, Yu R Z, Wu S C, Zheng J H, Pu Y D, Lin Z W, Zhu T, Cao Z R, Miao W Y, Liu S Y, Jiang S E, Ding Y K 2012 High Power Laser Part. Beams 24 2355 (in Chinese) [黎航, 杨家敏, 张海鹰, 于瑞珍, 巫顺超, 郑建华, 蒲昱东, 林雉伟, 朱托, 曹柱荣, 缪文勇, 刘慎业, 江少恩, 丁永坤 2012 强激光与粒子束 24 2355]
[18]	Zhou J Y, Huang T X, Meng L, Jiang W, Li H, Zhang H Y, Zhao Z Q, Yang D 2008 High Power Laser Part. Beams 20 1658 (in Chinese) [周近宇, 黄天晅, 蒙林, 蒋炜, 黎航, 张海鹰, 赵宗清, 杨冬 2008 强激光与粒子束 20 1658]
[19]	Zhou J Y, Huang T X, Meng L, Jiang W, Li H, Zhang H Y 2010 High Power Laser Part. Beams 22 1053 (in Chinese) [周近宇, 黄天晅, 蒙林, 蒋炜, 黎航, 张海鹰 2010 强激光与粒子束 22 1053]
[20]	Zhou J Y, Huang T X, Meng L, Jiang W 2010 Acta Phys. Sin. 59 1913 (in Chinese) [周近宇, 黄天晅, 蒙林, 蒋炜 2010 59 1913]
[21]	Jing L F, Huang T X, Jiang S E, Chen B L, Pu Y D, Hu F, Chen S B 2012 Acta Phys. Sin. 61 105205 (in Chinese) [景龙飞, 黄天晅, 江少恩, 陈伯伦, 蒲昱东, 胡峰, 程书博 2012 61 105205]
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[23]	Pu Y D, Huang T X, Li H, Zhan X Y, Peng X S, Tang Q, Song Z F, Chen J B, Song T M, Chen M, Yu R Z, He X A, Li C G, Zhang L, Zheng J H, Jing L F, Chen B L, Su M, Jiang W, Yu B, Yan J, Li P, Lei H L, Jiang S E, Ding Y K 2012 Phys. Plasmas 19 072708
[24]	Yuan Z, Liu S Y, Cao Z R, Xiao S L, Li H, Zhang H Y, Wang L W 2009 High Power Laser Part. Beams 21 704 (in Chinese) [袁铮, 刘慎业, 曹柱荣, 肖沙里, 黎航, 张海鹰, 王丽伟 2009 强激光与粒子束 21 704]
[25]	McCarville T, Fulkerson S, Booth R, Emig J, Young B, Anderson S, Heeter B 2005 Rev. Sci. Instrum. 76 103501
[26]	Horsfield C J, Parker K W, Rothman S D, Fincke J, Lanier N E 2004 Rev. Sci. Instrum. 75 3947

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