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The generation of hot electrons and the coupling efficiency from laser to hot electrons are very important issues in fast ignition of inertial confinement fusion, which are important for optimizing the parameters of laser pulse and plasma and reducing the requirement for laser pulse. Laser interaction with nanolayered target is considered to be one of available ways of enhancing the coupling efficiency of laser to hot electrons. In order to understand the heating mechanism of hot electrons in the interaction between laser and nanolayered target in great detail, two-dimensional particle-in-cell simulation is carried out in this paper. Reflux for cold electrons moving to the interaction-face and then being accelerated near the interaction-face is detected by observing the tracks of electrons in the nanolayered target. It is found that the energies of inverse electrons are far smaller than those of forward electrons and the most inverse electrons are from the reflux of cold electrons by investigating the variations of the electron density and the electron energy density in one laser period. The J B heating mechanism is found to be a dominate mechanism in the generation of hot electrons by comparing the field and the locations of hot electrons at different times.
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Keywords:
- nanolayered target /
- particle-in-cell code /
- hot electrons /
- heating mechanism
[1] Cai H B, Mima K, Zhou W M, Jozaki T, Nagatomo H, Sunahara A, Mason R J 2009 Phys. Rev. Lett. 102 245001
[2] Dong K G, Gu Y Q, Zhu B, Wu Y C, Cao L F, He Y L, Liu H J, Hong W, Zhou W M, Zhao Z Q, Jiao C Y, Wen X L, Zhang B H, Wang X F 2010 Acta Phys. Sin. 59 8733 (in Chinese) [董克攻, 谷渝秋, 朱 斌, 吴玉迟, 曹磊峰, 何颖玲, 刘红杰, 洪 伟, 周维民, 赵宗青, 焦春晔, 温贤伦, 张保汉, 王晓方 2010 59 8733]
[3] Xu H, Sheng Z M, Zhang J 2007 Acta Phys. Sin. 56 968 (in Chinese) [徐 慧, 盛政明, 张 杰2007 56 968 ]
[4] Ma Y Y, Sheng Z M, Li Y T, Chang W W, Yuan X H, Chen M, Chen H C, Zheng J, Zhang J 2006 Phys. Plasmas 13 110702
[5] Zhou C T, He X T 2007 Opt. Lett. 32 2444
[6] Kodama R, Tanaka K, Sentoku Y, Matsushita T, Takahashi K, Kato Y, Fujita H, Kitagawa Y, Kanabe T, Yamanaka T, Mima K 2000 Phys. Rev. Lett. 84 674
[7] Bastiani S, Rousse A, Geindre J P, Audebert P, Quoix C, Hamoniaux G, Antonetti A, Gauthier J C 1997 Phys. Rev. E. 56 7179
[8] Ruhl H, Sentoku Y, Mima K, Tanaka K A, Kodama R 1999 Phys. Rev. Lett. 82 743
[9] Li C K, Séguin F H, Frenje J A, Rygg J R, Petrasso R D, Town R P J, Amendt P A, Hatchett S P, Landen O L, Mackinnon A J, Patel P K, Smalyuk V A, Sangster T C, Knauer J P 2006 Phys. Rev. Lett. 97 135003
[10] Marshall F J, McKenty P W, Delettrez J A, Epstein R, Knauer J P, Smalyuk V A, Frenje J A, Li C K, Petrasso R D, Séguin F H, Mancini R C 2009 Phys. Rev. Lett. 102 185004
[11] Li C K, Séguin F H, Frenje J A, Petrasso R D, Amendt P A, Town R P J, Landen O L, Rygg J R, Betti R, Knauer J P, Meyerhofer D D, Soures J M, Back C A, Kilkenny J D, Nikroo A 2009 Phys. Rev. Lett. 102 205001
[12] Li C K, Séguin F H, Frenje J A, Manuel M, Casey D, Sinenian N, Petrasso R D, Amendt P A, Landen O L, Rygg J R, Town R P J, Betti R, Delettrez J, Knauer J P, Marshall F, Meyerhofer D D, Sangster T C, Shvarts D, Smalyuk V A, Soures J M, Back C A, Kilkenny J D, Nikroo A 2009 Phys. Plasmas 16 056304
[13] Malka V, Fritzler S, Lefebvre E, d'Humieres E, Ferrand R, Grillon G, Albaret C, Meyroneinc S, Chambaret J P, Antonetti A, Hulin D 2004 Med. Phys. 311587
[14] Tabak M, Hammer J, Glinsky M E, Kruer W L, Wilks S C, Woodworth J, Campbell E M, Perry M D, Mason R J 1994 Phys. Plasmas 1 1626
[15] Cao L H, Gu Y Q, Zhao Z Q, Cao L F, Huang W Z, Zhou W M, Cai H B, He X T, Yu W, Yu M Y 2010 Phys. Plasmas 17 103106
[16] Cao L H, Gu Y Q, Zhao Z Q, Cao L F, Huang W Z, Zhou W M, He X T, Yu W, Yu M Y 2010 Phys. Plasmas 17 043103
[17] Zhao Z Q, Cao L H, Cao L H, Wang J, Huang W Z, Jiang W, He Y L, Wu Y C, Zhu B, Dong K G, Ding Y K, Zhang B H, Gu Y Q, Yu M Y, and He X T 2010 Phys. Plasmas 17 123108
[18] Ji Y L, Jiang G, Wu W D, Wang C Y, Gu Y Q, Tang Y J 2010 Appl. Phys. Lett. 96 041504
[19] Zhou W M, Gu Y Q, Hong W, Zhao Z Q, Ding Y K, Zhang B H, Cai H B, Mima K 2010Laser and Particle Beams. 28 585
[20] Zhou W M, Mima K, Nakamura T, Nagatomo H 2008 Phys. Plasmas 15 093107
[21] Yu J Q, Zhou W M, Cao L H, Zhao Z Q, Cao L F, Shan L Q, Liu D X, Jin X L, Li B, Gu Y Q 2012 Appl. Phys. Lett. 100 204101
[22] Yu J Q, Zhao Z Q, Jin X L, Wu F J, Yan Y H, Zhou W M, Cao L F, Li B, Gu Y Q 2012 Phys. Plasmas 19 053108
[23] Atzeni S, Meyer-ter-vehn J 2004 The Physics of Inertial Fusion (Oxford Science Publications)
[24] Gibbon P 2005 Short Pulse Laser Interactions with Matter (Imperical College Press)
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[1] Cai H B, Mima K, Zhou W M, Jozaki T, Nagatomo H, Sunahara A, Mason R J 2009 Phys. Rev. Lett. 102 245001
[2] Dong K G, Gu Y Q, Zhu B, Wu Y C, Cao L F, He Y L, Liu H J, Hong W, Zhou W M, Zhao Z Q, Jiao C Y, Wen X L, Zhang B H, Wang X F 2010 Acta Phys. Sin. 59 8733 (in Chinese) [董克攻, 谷渝秋, 朱 斌, 吴玉迟, 曹磊峰, 何颖玲, 刘红杰, 洪 伟, 周维民, 赵宗青, 焦春晔, 温贤伦, 张保汉, 王晓方 2010 59 8733]
[3] Xu H, Sheng Z M, Zhang J 2007 Acta Phys. Sin. 56 968 (in Chinese) [徐 慧, 盛政明, 张 杰2007 56 968 ]
[4] Ma Y Y, Sheng Z M, Li Y T, Chang W W, Yuan X H, Chen M, Chen H C, Zheng J, Zhang J 2006 Phys. Plasmas 13 110702
[5] Zhou C T, He X T 2007 Opt. Lett. 32 2444
[6] Kodama R, Tanaka K, Sentoku Y, Matsushita T, Takahashi K, Kato Y, Fujita H, Kitagawa Y, Kanabe T, Yamanaka T, Mima K 2000 Phys. Rev. Lett. 84 674
[7] Bastiani S, Rousse A, Geindre J P, Audebert P, Quoix C, Hamoniaux G, Antonetti A, Gauthier J C 1997 Phys. Rev. E. 56 7179
[8] Ruhl H, Sentoku Y, Mima K, Tanaka K A, Kodama R 1999 Phys. Rev. Lett. 82 743
[9] Li C K, Séguin F H, Frenje J A, Rygg J R, Petrasso R D, Town R P J, Amendt P A, Hatchett S P, Landen O L, Mackinnon A J, Patel P K, Smalyuk V A, Sangster T C, Knauer J P 2006 Phys. Rev. Lett. 97 135003
[10] Marshall F J, McKenty P W, Delettrez J A, Epstein R, Knauer J P, Smalyuk V A, Frenje J A, Li C K, Petrasso R D, Séguin F H, Mancini R C 2009 Phys. Rev. Lett. 102 185004
[11] Li C K, Séguin F H, Frenje J A, Petrasso R D, Amendt P A, Town R P J, Landen O L, Rygg J R, Betti R, Knauer J P, Meyerhofer D D, Soures J M, Back C A, Kilkenny J D, Nikroo A 2009 Phys. Rev. Lett. 102 205001
[12] Li C K, Séguin F H, Frenje J A, Manuel M, Casey D, Sinenian N, Petrasso R D, Amendt P A, Landen O L, Rygg J R, Town R P J, Betti R, Delettrez J, Knauer J P, Marshall F, Meyerhofer D D, Sangster T C, Shvarts D, Smalyuk V A, Soures J M, Back C A, Kilkenny J D, Nikroo A 2009 Phys. Plasmas 16 056304
[13] Malka V, Fritzler S, Lefebvre E, d'Humieres E, Ferrand R, Grillon G, Albaret C, Meyroneinc S, Chambaret J P, Antonetti A, Hulin D 2004 Med. Phys. 311587
[14] Tabak M, Hammer J, Glinsky M E, Kruer W L, Wilks S C, Woodworth J, Campbell E M, Perry M D, Mason R J 1994 Phys. Plasmas 1 1626
[15] Cao L H, Gu Y Q, Zhao Z Q, Cao L F, Huang W Z, Zhou W M, Cai H B, He X T, Yu W, Yu M Y 2010 Phys. Plasmas 17 103106
[16] Cao L H, Gu Y Q, Zhao Z Q, Cao L F, Huang W Z, Zhou W M, He X T, Yu W, Yu M Y 2010 Phys. Plasmas 17 043103
[17] Zhao Z Q, Cao L H, Cao L H, Wang J, Huang W Z, Jiang W, He Y L, Wu Y C, Zhu B, Dong K G, Ding Y K, Zhang B H, Gu Y Q, Yu M Y, and He X T 2010 Phys. Plasmas 17 123108
[18] Ji Y L, Jiang G, Wu W D, Wang C Y, Gu Y Q, Tang Y J 2010 Appl. Phys. Lett. 96 041504
[19] Zhou W M, Gu Y Q, Hong W, Zhao Z Q, Ding Y K, Zhang B H, Cai H B, Mima K 2010Laser and Particle Beams. 28 585
[20] Zhou W M, Mima K, Nakamura T, Nagatomo H 2008 Phys. Plasmas 15 093107
[21] Yu J Q, Zhou W M, Cao L H, Zhao Z Q, Cao L F, Shan L Q, Liu D X, Jin X L, Li B, Gu Y Q 2012 Appl. Phys. Lett. 100 204101
[22] Yu J Q, Zhao Z Q, Jin X L, Wu F J, Yan Y H, Zhou W M, Cao L F, Li B, Gu Y Q 2012 Phys. Plasmas 19 053108
[23] Atzeni S, Meyer-ter-vehn J 2004 The Physics of Inertial Fusion (Oxford Science Publications)
[24] Gibbon P 2005 Short Pulse Laser Interactions with Matter (Imperical College Press)
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