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超强圆偏振激光直接加速产生超高能量电子束

尹传磊 王伟民 廖国前 李梦超 李玉同 张杰

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超强圆偏振激光直接加速产生超高能量电子束

尹传磊, 王伟民, 廖国前, 李梦超, 李玉同, 张杰

Ultrahigh-energy electron beam generated by ultra-intense circularly polarized laser pulses

Yin Chuan-Lei, Wang Wei-Min, Liao Guo-Qian, Li Meng-Chao, Li Yu-Tong, Zhang Jie
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  • 研究表明, 峰值强度为1022–1025 W/cm2量级的圆偏振激光脉冲的有质动力场可以直接加速并产生GeV–TeV的单能电子束, 其中被加速电子的能量与激光脉冲的峰值强度成线性定标关系. 为了获得更高能量的电子束, 通过对一维解析模型的分析得到: 如果电子束在激光传播的方向上具一个初始能量E0, 那么这种线性的定标关系可以被打破, 被加速电子束最终的能量可以被放大E0倍. 这是由于具有一定初始能量的电子束不容易被激光脉冲抛在后面, 进而获得更高的加速距离. 二维粒子模拟结果显示: 当电子束的初始能量E0为MeV量级时这个方法是有效的, 而当E0过大时这个方法失效. 这是因为当电子的加速距离远大于激光脉冲的瑞利长度时, 激光强度的衰减使得电子束的加速错过了最佳加速场.
    The earlier research showed that circularly polarized laser pulses with peak intensities in a range of 1022-1025 W/cm2 can directly accelerate and generate GeV-TeV monoenergetic electron beams with a linear energy scaling with the laser intensity. To obtain higher energy electron beams, a scheme is proposed to use an electron beam with an initial energy E0 along the laser propagation direction. This scheme can overcome the linear energy scaling with E0=0 obtained previously and enhance the beam energy by E0 folds. This is because an electron beam with an initial energy can move with the laser pulse together and therefore obtain a longer acceleration distance. Two-dimensional particle-in-cell simulation shows that this scheme is effective only for the electron beams initially with low energy on the order of MeV. With overhigh energy, electrons will miss the optimum acceleration field because the electron acceleration distance is much longer than the Rayleigh distance and the laser intensity is significantly attenuated.
    • 基金项目: 国家重点基础研究发展计划(批准号: 2013CBA01501)和国家自然科学基金(批准号: 11105217, 11375261, 11375262)资助的课题.
    • Funds: Project supported by the State Key Development Program for Basic Research of China (Grant No. 2013CBA01501) and the National Natural Science Foundation of China (Grant Nos. 11105217, 11375261, 11375262).
    [1]

    DesRosiers C, Moskvin V, Bielajew A F, Papiez L 2000 Phys. Med. Biol. 45 1781

    [2]

    Glinec Y Y, Faure J, Malka V V, Fuchs T, Szymanowski H, Oelfke U 2006 Med. Phys. 33 155

    [3]

    Glinec Y, Faure J, Le Dain L, Darbon S, Hosokai T, Santos J J, Lefebvre E, Rousseau J P, Burgy F, Mercier B, Malka V 2005 Phys. Rev. Lett. 94 025003

    [4]

    Kneip S, McGuffey C, Martins J L, Martins S F, Bellei C, Chvykov V, Dollar F, Fonseca R, Huntington C, Kalintchenko G, Maksimchuk A, Mangles S P D, Matsuoka T, Nagel S R, Palmer C A J, Schreiber J, Phuoc K T, Thomas A G R, Yanovsky V, Silva L O, Krushelnick K, Najmudin Z 2010 Nature Phys. 6 980

    [5]

    Cipiccia S, Islam M R, Ersfeld B, Shanks R P, Brunetti E, Vieux G, Yang X, Issac R C, Wiggins S M, Welsh G H, Anania M P, Maneuski D, Montgomery R, Smith G, Hoek M, Hamilton D J, Lemos N R C, Symes D, Rajeev P P, Shea V O, Dias J M, Jaroszynski D A 2011 Nature Phys. 7 867

    [6]

    Phuoc K T, Corde S, Thaury C, Malka V, Tafzi A, Goddet J P, Shah R C, Sebban S, Rousse A 2012 Nature Photon. 6 308

    [7]

    Chen L M, Yan W C, Li D Z, Hu Z D, Zhang L, Wang W M, Hafz N A M, Mao J Y, Huang K, Ma Y, Zhao J R, Ma J L, Li Y T, Lu X, Sheng Z M, Wei Z Y, Gao J, Zhang J 2013 Sci. Report 3 1912

    [8]

    Tan F, Zhu B, Han D, Xin J T, Zhao Z Q, Cao L F, Gu Y Q, Zhang B H 2014 Chin. Phys. B 23 034104

    [9]

    Leemans W P, Geddes C G R, Faure J, Toth C, van Tilborg J, Schroeder C B, Esarey E, Fubiani G, Auerbach D, Marcelis B, Carnahan M A, Kaindl R A, Byrd J, Martin M C 2003 Phys. Rev. Lett. 91 074802

    [10]

    Shen Y, Watanabe T, Arena D A, Kao C C, Murphy J B, Tsang T Y, Wang X J, Carr G L 2007 Phys. Rev. Lett. 99 043901

    [11]

    Wang W M, Kawata S, Sheng Z M, Li Y T, Chen L M, Qian L J, Zhang J 2011 Opt. Lett. 36 2608

    [12]

    Wang W M, Gibbon P, Sheng Z M, Li Y T 2014 Phys. Rev. A 90 023808

    [13]

    Pukhov A, Meyer-ter-vehn J 2002 Appl. Phys. B 74 355

    [14]

    Mangles S P D, Murphy C D, Najmudin Z, Thomas A G R, Collier J L, Dangor A E, Divall E J, Foster P S, Gallacher J G, Hooker C J, Jaroszynski D A, Langley A J, Mori W B, Norreys P A, Tsung F S, Viskup R, Walton B R, Krushelnick K 2004 Nature 431 535

    [15]

    Geddes C, Toth C, van Tilborg J, Esarey E, Schroeder C, Bruhwiler D, Nieter C, Cary J, Leemans W 2004 Nature 431 538

    [16]

    Faure J, Glinec Y, Pukhov A, Kiselev S, Gordi-enko S, Lefebvre E, Rousseau J, Burgy F, Malka V 2004 Nature 431 541

    [17]

    Lu W, Huang C, Zhou M, Mori W B, Katsouleas T 2006 Phys. Rev. Lett. 96 165002

    [18]

    Lu W, Tzoufras M, Joshi C, Tsung F S, Mori W B, Vieira J, Fonseca R A, Silva L O 2007 Phys. Rev. ST Accel. Beams 10 061301

    [19]

    Faure J, Rechatin C, Norlin A, Lifschitz A, Glinec Y, Malka V 2006 Nature 444 737

    [20]

    Wang W M, Sheng Z M, Zhang J 2008 Appl. Phys. Lett. 93 201502

    [21]

    Hafz N A M, Jeong T M, Choi I W, Lee S K, Pae K H, Kulagin V V, Sung J H, Yu T J, Hong K H, Hosokai T, Cary J R, Ko D K, Lee J 2008 Nature Photon. 2 571

    [22]

    Liu J S, Xia C Q, Wang W T, Lu H Y, Wang C, Deng A H, Li W T, Zhang H, Liang X Y, Leng Y X, Lu X M, Wang C, Wang J Z, Nakajima K, Li R X, Xu Z Z 2011 Phys. Rev. Lett. 107 035001

    [23]

    Leemans W P, Nagler B, Gonsalves A J, Toth C, Nakamura K, Geddes C G R, Esarey E, Schroeder C B, Hooker S M 2006 Nature Phys. 2 696

    [24]

    Leemans W P, Gonsalves A J, Mao H S, Nakamura K, Benedetti C, Schroeder C B, Toth C, Daniels J, Mittelberger D E, Bulanov S S, Vay J L, Geddes C G R, Esarey E 2014 Phys. Rev. Lett. 113 245002

    [25]

    Wang X, Zgadzaj R, Fazel N, Li Z, Yi S A, Zhang X, Henderson W, Chang Y Y, Korzekwa R, Tsai H E, Pai C H, Quevedo H, Dyer G, Gaul E, Martinez M, Bernstein A C, Borger T, Spinks M, Donovan M, Khudik V, Shvets G, Ditmire T, Downer M C 2013 Nature Commun. 4 1988

    [26]

    Wang W M, Sheng Z M, Zeng M, Liu Y, Hu Z D, Kawata S, Zheng C Y, Mori W B, ChenL M, Li Y T, Zhang J 2012 Appl. Phys. Lett. 101 184104

    [27]

    Wang W M, Sheng Z M, Li Y T, Chen L M, Kawata S, Zhang J 2010 Phys. Rev. ST Accel. Beams 13 071301

    [28]

    Heisenberg W, Euler H 1936 Z. Phys. 98 714

    [29]

    Dittrich W, Gies H 2000 Probing the Quantum Vacuum (Berlin: Springer-Verlag)

    [30]

    Sun G Z, Ott E, Lee Y C, Guzdar P 1987 Phys. Fluids 30 526

    [31]

    Borisov A B, Borovskiy A V, Shiryaev O B, Korobkin V V, Prokhorov A M, Solem J C, Luk T S, Boyer K, Rhodes C K 1992 Phys. Rev. A 45 5830

    [32]

    Wang W M, Zheng C Y 2006 Acta Phys. Sin. 55 310 (in Chinese) [王伟民, 郑春阳 2006 物理学报 55 310]

    [33]

    Wang F C, Shen B F, Zhang X M, Li X M, Jin Z Y 2007 Phys. Plasmas 14 083102

    [34]

    Yu W, Bychenkov V, Sentoku Y, Yu M Y, Sheng Z M, Mima K 2000 Phys. Rev. Lett. 85 570

    [35]

    Kulagin V V, Cherepenin V A, Suk H 2004 Phys. Plasmas 11 5239

    [36]

    Wang W M, Sheng Z M, Kawata S, Zheng C Y, Li Y T, Chen L M, Dong Q L, Lu X, Ma J L, Zhang J 2012 J. Plasma Phys. 78 461

    [37]

    Meyer-ter-Vehn J, Pukhov A, Sheng Z M 2001 in: Atoms, Solids, and Plasmas in Super-Intense Laser Fields Edited by Batani D et al. (Norwell MA: Kluwer Academic/Plenum Publishers) pp167-192

    [38]

    Sheng Z M, Mima K, Sentoku Y, Jovanovic M S, Taguchi T, Zhang J, Meyer-ter-Vehn J 2002 Phys. Rev. Lett. 88 055004

    [39]

    Wang W M, Gibbon P, Sheng Z M, Li Y T 2015 Phys. Rev. E 91 013101

  • [1]

    DesRosiers C, Moskvin V, Bielajew A F, Papiez L 2000 Phys. Med. Biol. 45 1781

    [2]

    Glinec Y Y, Faure J, Malka V V, Fuchs T, Szymanowski H, Oelfke U 2006 Med. Phys. 33 155

    [3]

    Glinec Y, Faure J, Le Dain L, Darbon S, Hosokai T, Santos J J, Lefebvre E, Rousseau J P, Burgy F, Mercier B, Malka V 2005 Phys. Rev. Lett. 94 025003

    [4]

    Kneip S, McGuffey C, Martins J L, Martins S F, Bellei C, Chvykov V, Dollar F, Fonseca R, Huntington C, Kalintchenko G, Maksimchuk A, Mangles S P D, Matsuoka T, Nagel S R, Palmer C A J, Schreiber J, Phuoc K T, Thomas A G R, Yanovsky V, Silva L O, Krushelnick K, Najmudin Z 2010 Nature Phys. 6 980

    [5]

    Cipiccia S, Islam M R, Ersfeld B, Shanks R P, Brunetti E, Vieux G, Yang X, Issac R C, Wiggins S M, Welsh G H, Anania M P, Maneuski D, Montgomery R, Smith G, Hoek M, Hamilton D J, Lemos N R C, Symes D, Rajeev P P, Shea V O, Dias J M, Jaroszynski D A 2011 Nature Phys. 7 867

    [6]

    Phuoc K T, Corde S, Thaury C, Malka V, Tafzi A, Goddet J P, Shah R C, Sebban S, Rousse A 2012 Nature Photon. 6 308

    [7]

    Chen L M, Yan W C, Li D Z, Hu Z D, Zhang L, Wang W M, Hafz N A M, Mao J Y, Huang K, Ma Y, Zhao J R, Ma J L, Li Y T, Lu X, Sheng Z M, Wei Z Y, Gao J, Zhang J 2013 Sci. Report 3 1912

    [8]

    Tan F, Zhu B, Han D, Xin J T, Zhao Z Q, Cao L F, Gu Y Q, Zhang B H 2014 Chin. Phys. B 23 034104

    [9]

    Leemans W P, Geddes C G R, Faure J, Toth C, van Tilborg J, Schroeder C B, Esarey E, Fubiani G, Auerbach D, Marcelis B, Carnahan M A, Kaindl R A, Byrd J, Martin M C 2003 Phys. Rev. Lett. 91 074802

    [10]

    Shen Y, Watanabe T, Arena D A, Kao C C, Murphy J B, Tsang T Y, Wang X J, Carr G L 2007 Phys. Rev. Lett. 99 043901

    [11]

    Wang W M, Kawata S, Sheng Z M, Li Y T, Chen L M, Qian L J, Zhang J 2011 Opt. Lett. 36 2608

    [12]

    Wang W M, Gibbon P, Sheng Z M, Li Y T 2014 Phys. Rev. A 90 023808

    [13]

    Pukhov A, Meyer-ter-vehn J 2002 Appl. Phys. B 74 355

    [14]

    Mangles S P D, Murphy C D, Najmudin Z, Thomas A G R, Collier J L, Dangor A E, Divall E J, Foster P S, Gallacher J G, Hooker C J, Jaroszynski D A, Langley A J, Mori W B, Norreys P A, Tsung F S, Viskup R, Walton B R, Krushelnick K 2004 Nature 431 535

    [15]

    Geddes C, Toth C, van Tilborg J, Esarey E, Schroeder C, Bruhwiler D, Nieter C, Cary J, Leemans W 2004 Nature 431 538

    [16]

    Faure J, Glinec Y, Pukhov A, Kiselev S, Gordi-enko S, Lefebvre E, Rousseau J, Burgy F, Malka V 2004 Nature 431 541

    [17]

    Lu W, Huang C, Zhou M, Mori W B, Katsouleas T 2006 Phys. Rev. Lett. 96 165002

    [18]

    Lu W, Tzoufras M, Joshi C, Tsung F S, Mori W B, Vieira J, Fonseca R A, Silva L O 2007 Phys. Rev. ST Accel. Beams 10 061301

    [19]

    Faure J, Rechatin C, Norlin A, Lifschitz A, Glinec Y, Malka V 2006 Nature 444 737

    [20]

    Wang W M, Sheng Z M, Zhang J 2008 Appl. Phys. Lett. 93 201502

    [21]

    Hafz N A M, Jeong T M, Choi I W, Lee S K, Pae K H, Kulagin V V, Sung J H, Yu T J, Hong K H, Hosokai T, Cary J R, Ko D K, Lee J 2008 Nature Photon. 2 571

    [22]

    Liu J S, Xia C Q, Wang W T, Lu H Y, Wang C, Deng A H, Li W T, Zhang H, Liang X Y, Leng Y X, Lu X M, Wang C, Wang J Z, Nakajima K, Li R X, Xu Z Z 2011 Phys. Rev. Lett. 107 035001

    [23]

    Leemans W P, Nagler B, Gonsalves A J, Toth C, Nakamura K, Geddes C G R, Esarey E, Schroeder C B, Hooker S M 2006 Nature Phys. 2 696

    [24]

    Leemans W P, Gonsalves A J, Mao H S, Nakamura K, Benedetti C, Schroeder C B, Toth C, Daniels J, Mittelberger D E, Bulanov S S, Vay J L, Geddes C G R, Esarey E 2014 Phys. Rev. Lett. 113 245002

    [25]

    Wang X, Zgadzaj R, Fazel N, Li Z, Yi S A, Zhang X, Henderson W, Chang Y Y, Korzekwa R, Tsai H E, Pai C H, Quevedo H, Dyer G, Gaul E, Martinez M, Bernstein A C, Borger T, Spinks M, Donovan M, Khudik V, Shvets G, Ditmire T, Downer M C 2013 Nature Commun. 4 1988

    [26]

    Wang W M, Sheng Z M, Zeng M, Liu Y, Hu Z D, Kawata S, Zheng C Y, Mori W B, ChenL M, Li Y T, Zhang J 2012 Appl. Phys. Lett. 101 184104

    [27]

    Wang W M, Sheng Z M, Li Y T, Chen L M, Kawata S, Zhang J 2010 Phys. Rev. ST Accel. Beams 13 071301

    [28]

    Heisenberg W, Euler H 1936 Z. Phys. 98 714

    [29]

    Dittrich W, Gies H 2000 Probing the Quantum Vacuum (Berlin: Springer-Verlag)

    [30]

    Sun G Z, Ott E, Lee Y C, Guzdar P 1987 Phys. Fluids 30 526

    [31]

    Borisov A B, Borovskiy A V, Shiryaev O B, Korobkin V V, Prokhorov A M, Solem J C, Luk T S, Boyer K, Rhodes C K 1992 Phys. Rev. A 45 5830

    [32]

    Wang W M, Zheng C Y 2006 Acta Phys. Sin. 55 310 (in Chinese) [王伟民, 郑春阳 2006 物理学报 55 310]

    [33]

    Wang F C, Shen B F, Zhang X M, Li X M, Jin Z Y 2007 Phys. Plasmas 14 083102

    [34]

    Yu W, Bychenkov V, Sentoku Y, Yu M Y, Sheng Z M, Mima K 2000 Phys. Rev. Lett. 85 570

    [35]

    Kulagin V V, Cherepenin V A, Suk H 2004 Phys. Plasmas 11 5239

    [36]

    Wang W M, Sheng Z M, Kawata S, Zheng C Y, Li Y T, Chen L M, Dong Q L, Lu X, Ma J L, Zhang J 2012 J. Plasma Phys. 78 461

    [37]

    Meyer-ter-Vehn J, Pukhov A, Sheng Z M 2001 in: Atoms, Solids, and Plasmas in Super-Intense Laser Fields Edited by Batani D et al. (Norwell MA: Kluwer Academic/Plenum Publishers) pp167-192

    [38]

    Sheng Z M, Mima K, Sentoku Y, Jovanovic M S, Taguchi T, Zhang J, Meyer-ter-Vehn J 2002 Phys. Rev. Lett. 88 055004

    [39]

    Wang W M, Gibbon P, Sheng Z M, Li Y T 2015 Phys. Rev. E 91 013101

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    [20] 夏江帆, 张军, 张杰. 用激光等离子体实验对天体物理动力学过程进行模拟的可行性研究. 物理学报, 2001, 50(5): 994-1000. doi: 10.7498/aps.50.994
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出版历程
  • 收稿日期:  2014-12-05
  • 修回日期:  2015-01-19
  • 刊出日期:  2015-07-05

超强圆偏振激光直接加速产生超高能量电子束

  • 1. 中国科学院物理研究所, 北京凝聚态物理国家实验室, 北京 100190
    基金项目: 国家重点基础研究发展计划(批准号: 2013CBA01501)和国家自然科学基金(批准号: 11105217, 11375261, 11375262)资助的课题.

摘要: 研究表明, 峰值强度为1022–1025 W/cm2量级的圆偏振激光脉冲的有质动力场可以直接加速并产生GeV–TeV的单能电子束, 其中被加速电子的能量与激光脉冲的峰值强度成线性定标关系. 为了获得更高能量的电子束, 通过对一维解析模型的分析得到: 如果电子束在激光传播的方向上具一个初始能量E0, 那么这种线性的定标关系可以被打破, 被加速电子束最终的能量可以被放大E0倍. 这是由于具有一定初始能量的电子束不容易被激光脉冲抛在后面, 进而获得更高的加速距离. 二维粒子模拟结果显示: 当电子束的初始能量E0为MeV量级时这个方法是有效的, 而当E0过大时这个方法失效. 这是因为当电子的加速距离远大于激光脉冲的瑞利长度时, 激光强度的衰减使得电子束的加速错过了最佳加速场.

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