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激光辐照靶产生的等离子体电子密度的诊断对于惯性约束聚变、高能量密度物理等相关领域的研究具有重要意义,特别是高Z材料等离子体临界面附近的电子密度分布信息的测量. 利用软X射线激光作为探针是诊断等离子体电子密度分布的一种重要方法,但在诊断激光辐照高Z材料产生的等离子体研究中,遇到了高Z材料等离子体自发辐射过大的问题,难以开展. 为此,针对软X射线激光的特点,发展了多种具体的实验技术. 通过综合利用这些技术,大大的抑制了待测等离子体自发辐射对信号的影响,使得软X射线激光探针诊断高Z材料等离子体成为可能. 作为典型例子,实验诊断了激光辐照金平面靶的等离子体,获得了清晰的实验图像,表明相关的技术是有效和可行的.It is important to diagnose electron density of a plasma irradiated by lasers for inertial confinement fusion, in high energy density physics and related fields, especially for measuring high-Z plasma near the interface. Use of soft X-ray laser as a probe is an important method in diagnosis of plasma electron density distribution. However, it is difficult to carry out the research in high-Z laser plasma, because of the problem of excessive plasma spontaneous radiation. In view of the characteristics of soft X-ray laser, several specific experimental techniques have been developed. By using these techniques, which can greatly suppress effects of spontaneous radiation, diagnosis of high-Z plasma with soft X-ray laser probe method becomes possible. As a typical example, an experiment of diagnosing gold plasma is performed and clear images are obtained, indicating that the techniques are effective and feasible.
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Keywords:
- diagnoses of plasma /
- laser probe technique /
- soft X-ray laser /
- high-Z plasma
[1] Cauble R, Da Silva L B, Barbee Jr T W, Celliers P, Moreno J C, Wan A S 1995 Phys. Rev. Lett. 74 3816
[2] Ress D, DaSilva L B, London R A, Trebes J E, Mrowka S, Procassini R J, Barbee Jr T W, Lehr D E 1994 Science 265 514
[3] Baidis H A, Dunn J, Foord M E, Rozmus W 2002 Rev. Sci. Instrum. 73 4223
[4] Wang C, An H H, Qiao X M, Fang Z H, Xiong J, Wang W, Sun J R, Zheng W D 2013 Acta Phys. Sin. 62 135203 (in Chinese) [王琛, 安红海, 乔秀梅, 方智恒, 熊俊, 王伟, 孙今人, 郑无敌 2013 62 135203]
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[6] Wang C, Wang W, Sun J R, Fang Z H, Wu J, Fu S Z, Ma W X, Gu Y, Wang S J, Zhang G P, Zheng W D, Zhang T X, Peng H M, Shao P, Yi K, Lin Z Q, Wang Z S, Wang H C, Zhou B, Chen L Y and Jin C S 2005 Acta Phys. Sin. 54 202 (in Chinese) [王琛, 王伟, 孙今人, 方智恒, 吴江, 傅思祖, 马伟新, 顾援, 王世绩, 张国平, 郑无敌, 张覃鑫, 彭惠民, 邵平, 易葵, 林尊琪, 王占山, 王宏昌, 周斌, 陈玲燕, 金春水 2005 54 202]
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[8] Le Déroff L, Salières P, Carré, Joyeux D, Phalippou D 2000 Phys. Rev. A 61 043802
[9] Rocca J J, Moreno C H, Marconi M C, Kanizay K 1999 Opt. Lett. 24 420
[10] Wang C, An H H, Wang W, Fang Z H, Jia G, Meng X F, Sun J R, Liu Z K, Fu S J, Qiao X M, Zheng W D, Wang S J 2014 Acta Phys. Sin. 63 125210 (in Chinese) [王琛, 安红海, 王伟, 方智恒, 贾果, 孟祥富, 孙今人, 刘正坤, 付绍军, 乔秀梅, 郑无敌, 王世绩 2014 63 125210]
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[12] Wang R R, Chen W M, Wang W, Dong J Q, Xiao S L 2010 Chin. Phys. B 19 075202
[13] Xiong J, Dong J Q, Jia G, Wang R R, Wang W, Fu S Z, Zheng W D 2013 Chin. Phys. B 22 065201
[14] Zhang L, He F, Li S C, Ouyang J T 2013 Chin. Phys. B 22 125202
[15] Peng H M 2008 Radiation Transport and Radiation Hydrodynamics in plasma (Beijing: National Defence of Industry Press) p178 (in Chinese) [彭惠民2008等离子体中辐射输运和辐射流体力学(北京: 国防工业出版社)第178页]
[16] Wang W, Ni Y L, Wang B G, Sun J R, Wu J, Wang C, Sun Y Q, Zhou G L, Gu Y, Wang S J 2001 High Power Laser and Particle Beams 13 525 (in Chinese) [王伟, 倪元龙, 万炳根, 孙今人, 吴江, 王琛, 孙玉琴, 周关林, 顾援, 王世绩 2001 强激光与粒子束 13 525]
[17] Wang Z S, Zhang Z, Wang F L, Wu W J, Wang H C, Qin S J, Cheng L Y 2004 High Power Laser and Particle Beams 16 1089 (in Chinese) [王占山, 张众, 王风丽, 吴文娟, 王洪昌, 秦树基, 陈玲燕 2004 强激光与粒子束 16 1089]
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[1] Cauble R, Da Silva L B, Barbee Jr T W, Celliers P, Moreno J C, Wan A S 1995 Phys. Rev. Lett. 74 3816
[2] Ress D, DaSilva L B, London R A, Trebes J E, Mrowka S, Procassini R J, Barbee Jr T W, Lehr D E 1994 Science 265 514
[3] Baidis H A, Dunn J, Foord M E, Rozmus W 2002 Rev. Sci. Instrum. 73 4223
[4] Wang C, An H H, Qiao X M, Fang Z H, Xiong J, Wang W, Sun J R, Zheng W D 2013 Acta Phys. Sin. 62 135203 (in Chinese) [王琛, 安红海, 乔秀梅, 方智恒, 熊俊, 王伟, 孙今人, 郑无敌 2013 62 135203]
[5] DaSilva L B, Barbee T W, Cauble R, Celliers P, Ciarlo D, Libby S, London R A, Matthews D, Mrowka S, Moreno J C, Ress D, Trebes J E, Wan A S and Weber F 1995 Phys. Rev. Lett. 74 3991
[6] Wang C, Wang W, Sun J R, Fang Z H, Wu J, Fu S Z, Ma W X, Gu Y, Wang S J, Zhang G P, Zheng W D, Zhang T X, Peng H M, Shao P, Yi K, Lin Z Q, Wang Z S, Wang H C, Zhou B, Chen L Y and Jin C S 2005 Acta Phys. Sin. 54 202 (in Chinese) [王琛, 王伟, 孙今人, 方智恒, 吴江, 傅思祖, 马伟新, 顾援, 王世绩, 张国平, 郑无敌, 张覃鑫, 彭惠民, 邵平, 易葵, 林尊琪, 王占山, 王宏昌, 周斌, 陈玲燕, 金春水 2005 54 202]
[7] Filevich J, Kanizay K, Marconi M C, Chilla J L, Rocca J J 2000 Opt. Lett. 25 356
[8] Le Déroff L, Salières P, Carré, Joyeux D, Phalippou D 2000 Phys. Rev. A 61 043802
[9] Rocca J J, Moreno C H, Marconi M C, Kanizay K 1999 Opt. Lett. 24 420
[10] Wang C, An H H, Wang W, Fang Z H, Jia G, Meng X F, Sun J R, Liu Z K, Fu S J, Qiao X M, Zheng W D, Wang S J 2014 Acta Phys. Sin. 63 125210 (in Chinese) [王琛, 安红海, 王伟, 方智恒, 贾果, 孟祥富, 孙今人, 刘正坤, 付绍军, 乔秀梅, 郑无敌, 王世绩 2014 63 125210]
[11] Liu L, Li L M, Xu Q F, Chang L, Wen J C 2009 Chin. Phys. B 18 3367
[12] Wang R R, Chen W M, Wang W, Dong J Q, Xiao S L 2010 Chin. Phys. B 19 075202
[13] Xiong J, Dong J Q, Jia G, Wang R R, Wang W, Fu S Z, Zheng W D 2013 Chin. Phys. B 22 065201
[14] Zhang L, He F, Li S C, Ouyang J T 2013 Chin. Phys. B 22 125202
[15] Peng H M 2008 Radiation Transport and Radiation Hydrodynamics in plasma (Beijing: National Defence of Industry Press) p178 (in Chinese) [彭惠民2008等离子体中辐射输运和辐射流体力学(北京: 国防工业出版社)第178页]
[16] Wang W, Ni Y L, Wang B G, Sun J R, Wu J, Wang C, Sun Y Q, Zhou G L, Gu Y, Wang S J 2001 High Power Laser and Particle Beams 13 525 (in Chinese) [王伟, 倪元龙, 万炳根, 孙今人, 吴江, 王琛, 孙玉琴, 周关林, 顾援, 王世绩 2001 强激光与粒子束 13 525]
[17] Wang Z S, Zhang Z, Wang F L, Wu W J, Wang H C, Qin S J, Cheng L Y 2004 High Power Laser and Particle Beams 16 1089 (in Chinese) [王占山, 张众, 王风丽, 吴文娟, 王洪昌, 秦树基, 陈玲燕 2004 强激光与粒子束 16 1089]
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