激光等离子体受激散射的线性理论研究

项江; 郑春阳; 刘占军

doi:10.7498/aps.59.8717

摘要

利用包含两种阻尼(Landau阻尼和碰撞阻尼)成分的受激拉曼散射(SRS)、受激布里渊散射线性分析程序LIP,在给定的等离子体状态下分析了阻尼成分、激光强度以及等离子体组分对点火尺度等离子体中受激散射不稳定性发展的影响.详细评估了碰撞阻尼的效应,发现碰撞阻尼在接近1/4临界密度处能有效抑制受激散射的增长,从而造成SRS光谱上的"缝"现象.同时,电子温度的升高会在特定的密度区域促进SRS的发展.研究结果可为点火实验的设计提供参考.

关键词:

Abstract

The linear theory and the post process program LIP are developed to describe the stimulated scattering in laser-plasma-interaction. The two damping rates, especially the collision damping rate, are included in the program LIP. The effects of the laser intensity and electron temperature are investigated in an ignition scale plasma. The importance of the collision damping is revealed, and it is found that the growth rate of the stimulated scattering is effectively reduced by the collision damping when the plasma density is close to one-quarter of critical density. Whereas, the electron temperature is responsible for the increase of the growth rate on the specific density scale. The results may provide the reference for the ignition design in reducing the reflectivity.

Keywords:

作者及机构信息

(1)北京应用物理与计算数学研究所,北京 100094; (2)北京应用物理与计算数学研究所,北京 100094;北京大学应用物理与技术中心,北京 100871

基金项目: 国家自然科学基金(批准号:10975023, 10935003)和国家重点基础研究发展计划(批准号:2007CB814802)资助的课题.

Authors and contacts

(1)Institute of Applied Physics and Computational Mathematics, Beijing 100094, China; (2)Institute of Applied Physics and Computational Mathematics, Beijing 100094, China;Center for Applied Physics and Technology, Peking University, Beijing 100871, China; (3)Institute of Applied Physics and Computational Mathematics, Beijing 100094, China;Center for Applied Physics and Technology, Peking University, Beijing 100872, China

参考文献

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[2]	Meezan N B, Atherton L J, Callahan D A, Dewald E L, Dixit S, Dzenitis E G, Edwards M J, Haynam C A, Hinkel D E, Jones O S, Landen O, London R A, Michel P A, Moody J D, Milovich J L, Schneider M B, Thomas C A, Town R P J, Warrick A L, Weber S V, Widmann K, Glenzer S H, Suter L J, MacGowan B J, Kline J L, Kyrala G A, Nikroo A 2010 Phys. Plasmas 17 056304
[3]	Michel P, Divol L, Williams E A, Weber S, Thomas C A, Callahan D A, Haan S W, Salmonson J D, Dixit S, Hinkel D E, Edwards M J, MacGowan B J, Lindl J D, Glenzer S H, Suter L J 2009 Phys. Rev. Lett. 102 025004
[4]	Liu Z J, Zheng C Y, Cao L H, Li B, Zhu S P 2006 Acta Phys. Sin. 55 304 (in Chinese) [刘占军、郑春阳、曹莉华、李斌、朱少平 2006 55 304]
[5]	Wu J, Wu J, Cesar L H 2007 Chin. Phys. 16 558
[6]	Liu Z J, Zhu S P, Cao L H, Zheng C Y 2007 Acta Phys. Sin. 56 7084 (in Chinese) [刘占军、朱少平、曹莉华、郑春阳 2007 56 7084]
[7]	Froula D H, Divol L, London R A, Berger R L, Dppner T, Meezan N B, Ross J S, Suter L J, Sorce C, Glenzer S H 2009 Phys. Rev. Lett. 103 045006
[8]	Neumayer P, Berger R L, Callahan D, Divol L, Froula D H, London R A, MacGowan B J, Meezan N B, Michel P A, Ross J S, Sorce C, Widmann K, Suter L J, Glenzer S H 2008 Phys. Plasmas 15 056307
[9]	Strozzi D J, Williams E A, Hinkel D E, Froula D H, London R A, Callahan D A 2008 Phys. Plasmas 15 102703
[10]	Berger R L, Williams E A, Simon A 1989 Phys. Fluids B 1 414
[11]	Kruer W L 1988 The Physics of Laser Plasma Interaction (New York: Addison-Wesley) p96
[12]	Li B W, Zheng C Y, Song M, Liu Z J 2006 Acta Phys. Sin. 55 5325 (in Chinese) [李百文、郑春阳、宋敏、刘占军 2006 55 5325]
[13]	Zhang L, Dong Q L, Zhao J, Wang S J, Sheng Z M, He M Q, Zhang J 2009 Acta Phys. Sin. 58 1833 (in Chinese) [张蕾、董全力、赵静、王首钧、盛政明、何民卿、张杰 2009 58 1833]
[14]	Peng Z L, Zhu S P 2003 Acta Phys. Sin. 52 2500 (in Chinese) [彭忠林、朱少平 2003 52 2500]

施引文献

[1]	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
[2]	Meezan N B, Atherton L J, Callahan D A, Dewald E L, Dixit S, Dzenitis E G, Edwards M J, Haynam C A, Hinkel D E, Jones O S, Landen O, London R A, Michel P A, Moody J D, Milovich J L, Schneider M B, Thomas C A, Town R P J, Warrick A L, Weber S V, Widmann K, Glenzer S H, Suter L J, MacGowan B J, Kline J L, Kyrala G A, Nikroo A 2010 Phys. Plasmas 17 056304
[3]	Michel P, Divol L, Williams E A, Weber S, Thomas C A, Callahan D A, Haan S W, Salmonson J D, Dixit S, Hinkel D E, Edwards M J, MacGowan B J, Lindl J D, Glenzer S H, Suter L J 2009 Phys. Rev. Lett. 102 025004
[4]	Liu Z J, Zheng C Y, Cao L H, Li B, Zhu S P 2006 Acta Phys. Sin. 55 304 (in Chinese) [刘占军、郑春阳、曹莉华、李斌、朱少平 2006 55 304]
[5]	Wu J, Wu J, Cesar L H 2007 Chin. Phys. 16 558
[6]	Liu Z J, Zhu S P, Cao L H, Zheng C Y 2007 Acta Phys. Sin. 56 7084 (in Chinese) [刘占军、朱少平、曹莉华、郑春阳 2007 56 7084]
[7]	Froula D H, Divol L, London R A, Berger R L, Dppner T, Meezan N B, Ross J S, Suter L J, Sorce C, Glenzer S H 2009 Phys. Rev. Lett. 103 045006
[8]	Neumayer P, Berger R L, Callahan D, Divol L, Froula D H, London R A, MacGowan B J, Meezan N B, Michel P A, Ross J S, Sorce C, Widmann K, Suter L J, Glenzer S H 2008 Phys. Plasmas 15 056307
[9]	Strozzi D J, Williams E A, Hinkel D E, Froula D H, London R A, Callahan D A 2008 Phys. Plasmas 15 102703
[10]	Berger R L, Williams E A, Simon A 1989 Phys. Fluids B 1 414
[11]	Kruer W L 1988 The Physics of Laser Plasma Interaction (New York: Addison-Wesley) p96
[12]	Li B W, Zheng C Y, Song M, Liu Z J 2006 Acta Phys. Sin. 55 5325 (in Chinese) [李百文、郑春阳、宋敏、刘占军 2006 55 5325]
[13]	Zhang L, Dong Q L, Zhao J, Wang S J, Sheng Z M, He M Q, Zhang J 2009 Acta Phys. Sin. 58 1833 (in Chinese) [张蕾、董全力、赵静、王首钧、盛政明、何民卿、张杰 2009 58 1833]
[14]	Peng Z L, Zhu S P 2003 Acta Phys. Sin. 52 2500 (in Chinese) [彭忠林、朱少平 2003 52 2500]

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