| PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES |
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Methods of Generation and Detailed Characterization of Millimeter-Scale Plasmas Using a Gasbag Target |
| LI Zhi-Chao1,2**, ZHENG Jian2, JIANG Xiao-Hua1, WANG Zhe-Bin1, YANG Dong1, ZHANG Huan1, LI San-Wei1, WANG Feng1, PENG Xiao-Shi1, YIN Qiang1, ZHU Fang-Hua1, GUO Liang1,2, YUAN Peng2, LIU Shen-Ye1, DING Yong-Kun1
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1Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900
2CAS Key Laboratory of Basic Plasma Physics, and Department of Modern Physics, University of Science and Technology of China, Hefei 230026
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| Cite this article: |
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LI Zhi-Chao, ZHENG Jian, JIANG Xiao-Hua et al 2011 Chin. Phys. Lett. 28 125202 |
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Abstract Gasbag targets are useful for the research of laser-plasma interactions in inertial confinement fusion, especially in the laser overlapping regime. We report that on the Shengguang-II laser facility, millimeter−scale plasmas are successfully generated by four 0.35 µm laser beams using a gasbag target. Multiple diagnostics are applied to characterize the millimeter−scale plasmas in detail. The images from the x-ray pinhole cameras confirm that millimeter-scale plasmas are indeed created. An optical Thomson scattering system diagnoses the electron temperature of the CH filling plasmas by probing the thermal ion-acoustic fluctuations, which indicates that the electron temperature has a 600 eV flat roof in 0.7–1.3 ns. Another key parameter, i.e. the electron density of the millimeter-scale plasmas, is inferred by the spectrum of the back stimulated Raman scattering of an additional 0.53 µm laser beam. The inferred electron density keeps stable at 0.1nc in early time consistent with the controlled filling pressure and splits into a higher density in late time, which is attributed to the blast wave entering into the SRS interaction region.
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| Keywords:
52.57.-z
52.50.Jm
52.38.Bv
52.38.-r
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Received: 26 August 2011
Published: 29 November 2011
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52.57.-z
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(Laser inertial confinement)
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52.50.Jm
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(Plasma production and heating by laser beams (laser-foil, laser-cluster, etc.))
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52.38.Bv
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(Rayleigh scattering; stimulated Brillouin and Raman scattering)
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52.38.-r
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(Laser-plasma interactions)
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[1] Lindl John, Amendt Peter, Berger R L, Glendinning S G, Glenzer S H, Haan S W, Kauffman R L, Landen O L and Suter L L 2004 Phys. Plasma 11 339
[2] Jiang S E et al 2005 Chin. Phys. Lett. 22 2328
[3] Kruer W L 1988 The Physics of Laser Plasma Interactions (Redwood City, CA: Addison-Wesley)
[4] Zhang J T et al 2003 Chin. Phys. Lett. 20 1533
[5] Froula D H, Divol L, London R A, Berger R L, Doppner T, Meezan N B, Ross J S, Suter L J, Sorce C and Glenzer S H 2009 Phys. Rev. Lett. 103 045006
[6] Froula D H, Divol L, London R A, Michel P, Berger R L, Meezan N B, Neumayer P, Ross J S, Wallace R and Glenzer S H 2008 Phys. Rev. Lett. 100 015002
[7] Li S W et al 2009 Acta Phys. Sin. 58 3255
[8] Li S W et al 2011 Acta Phys. Sin. 60 055207
[9] Glenzer S H, MacGowan B J, Michel P et al 2010 Science 327 1228
[10] Meezan N B, Atherton L J, Callahan D A et al 2010 Phys. Plasma 17 056304
[11] Meezan N B, Atherton L J, Bond E J et al 2010 Phys. Plasma 17 109901
[12] Glenzer S, MacGowan B, Meezan N et al 2011 Phys. Rev. Lett. 106 085004
[13] Hinkel D E, Rosen M D, Williams E A et al 2011 Phys. Plasma 18 056312
[14] Li Z C et al 2010 Chin. Phys. B 19 125202
[15] Glenzer S, Back C, Estabrook K et al 1997 Phys. Rev. E 55 927
[16] Glenzer S, Fournier K, Decker C, Hammel B, Lee R, Lours L, MacGowan B and Osterheld A 2000 Phys. Rev. E 62 2728
[17] Stevenson R, Suter L, Oades K, Kruer W, Slark G, Fournier K, Meezan N, Kauffman R, Miller M, Glenzer S, Niemann C, Grun J, Davis J, Back C and Thomas B 2004 Phys. Plasma 11 2709
[18] Oades K, Stevenson M, Slark G, Suter L, Miller M, Grun J, Davis J and Kauffman R 2004 Proc. SPIE. Int. Soc. Opt. Eng. 5228 43
[19] Niemann C, Divol L, Froula D, Gregori G, Jones O, Kirkwood R, MacKinnon A, Meezan N, Moody J, Sorce C, Suter L, Bahr R, Seka W and Glenzer S 2005 Phys. Rev. Lett. 94 085005
[20] Lin Z, Deng X, Fan D et al 1999 Fusion Eng. Des. 44 66
[21] Wang Z B, Zheng J, Zhao B et al 2005 Phys. Plasma 12 082703
[22] Wang Z B, Zhao B, Zheng J et al 2005 Acta. Phys. Sin. 54 0211
[23] Deng X, Liang X, Chen Z, Yu W and Ma R 1986 Appl. Opt. 25 377
[24] Froula D H, Bower D, Chrisp M, Grace S, Kamperschroer J H, Kelleher T M, Kirkwood R K, MacGowan B, McCarville T, Sewall N, Shimamoto F Y, Shiromizu S J, Young B and Glenzer S H 2004 Rev. Sci. Instrum. 75 4168
[25] Evans D E, 1970 Plasma Phys. 12 573
[26] Montgomery D S and Johnson R P 2001 Rev. Sci. Instrum. 72 979
[27] Kalantar D H, Klem D E, MacGowan B J, Moody J D, Montgomery D S, Munro D H, Shepard T D, Stone G F, Failor B H and Hsing W W 1995 Phys. Plasma 2 3161
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