期刊文献+
任意字段
题名或关键词
题名
关键词
文摘
作者
第一作者
机构
刊名
分类号
参考文献
作者简介
基金资助
栏目信息

fs激光在靶背表面产生的质子束成丝(英文) 被引量：4

Filamented proton beams from the rear surface of target irradiated by fs laser
下载PDF
导出
摘要 　介绍了利用3TW/60fs钛宝石超短超强激光与20μm铜薄膜靶相互作用的实验。实验观测到质子束的角分布随激光功率密度有所变化。在较高的功率密度(～1×1018W/cm2)时,观测到环状的质子束分布,发散角较大。在较低的激光功率密度(～2×1017W/cm2)时,质子束发散角减小,质子束出现成丝现象。质子束的角分布实际上反映了从靶前输运到靶背的超热电子电流横向分布。在输运过程中,由于Weibel不稳定性会使超热电子电流出现空心化并最后破裂成丝。 Proton emission patterns from the rear surface of targets irradiated by 60 fs laser pulse at different intensity have been studied. The filaments of protons emission from 20 μm Cu target were observed in the shots with lower laser intensity (about 2×1017 W/cm2). As the laser intensity increased up to about 1×1018 W/cm2 for the same target thickness, the filaments of proton beam disappeared and a hollow proton beam emerged. The patterns of proton beams revealed the traverse distribution of hot electrons reached the rear surface of target after a long distance transportation from the front surface of target. In this process, Weibel instability will drive electron beam into hollow structure and break into filaments in the end.
作者 谷渝秋 蔡达锋 郑志坚 温天舒 淳于书泰 陈家斌 周维民 焦春晔 陈豪
机构地区 中国工程物理研究院激光聚变研究中心
出处 《强激光与粒子束》 EI CAS CSCD 北大核心 2004年第7期875-878,共4页 High Power Laser and Particle Beams
基金 KeyFoundationofChinaAcademyofEngineeringPhysics(2 0 0 0Z0 2 0 6) NationalNaturalScienceFoundation(1 0 2 650 57)
关键词 超短超强激光 质子加速 成丝 Electrostatics Laser applications Targets
分类号 O434.12 [机械工程—光学工程]
  • 相关文献

参考文献14

  • 1[1]Gitomer S, Jones R D, Begay F, et al. Fast ions and hot electrons in the laser plasma[J]. Phys Fluids,1986 29: 2679.
  • 2[2]Clark E L, Krushelnick K, Davies J R, et al. Measurements of energetic proton transport through magnetized plasma from intensde laser interactions with solids[J]. Phy Rev Lett, 2000,84: 670.
  • 3[3]Snavely R, Key M H, Hatchett S P, et al. Intense high-energy proton beams from petawatt laser irradiation of solids[J]. Phy Rev Lett, 2000, 85: 2945.
  • 4[4]Maksimchuk A, Gu S, Flippo K, et al. Forward ion acceleration in thin films driven by a high-intensity laser[J]. Phys Rev Lett,2000, 84: 4108.
  • 5[5]Zepf M, Clark E L, Krushelnick K, et al. Fast particle generation and energy transport in laser-solid interactions[J]. Phys Plasmas, 2001, 8: 2323 .
  • 6[6]Wilks S C, Langdon A B, Cowan T E, et al. Energetic proton generation in ultra-intense laser-solid interactions[J]. Phy Plasmas, 2001,8: 542.
  • 7[7]Pukhov A. Three dimensional simulation of ion acceleration from a foil irradiated by a short-pulser laser[J]. Phys Rev Lett, 2001,86:3562.
  • 8[8]Mackinnon A J, Sentoku Y, et al. Enhancement of proton acceleration by hot-electron recirculation in thin foils irradiated by ultraintense laser pulses[J]. Phys Rev Lett, 2002, 88: 215006-1.
  • 9[9]Hegelich M, Karsch S, Pretzler G, et al. MeV ion jets from short-laser interaction with thin foils[J]. Phy Rev Lett, 2002, 89: 085002-1.
  • 10[10]Gremillet L, Bonnaud G, Amiranoff F. Filamented transport of laser generated relativistic electrons penetrating a solid target[J]. Phy Plasmas, 2002,9: 941.

二级参考文献29

  • 1Perry M D, Mourou G. Terawatt to petawatt subpicosecond lasers[J]. Science, 1994, 264-917.
  • 2Gibbon P, Forster E. Short-pulse laser-plasma interactions[J]. Plasma Physics and Controlled Fusion, 1996, 38:769.
  • 3Tabak M, Hammer J, Glisky M E, et al. Ignition and high gain with ultrapowerful lasers[J]. Phys Plasmas, 1994, 1(5)L1626.
  • 4Wilks S C, Kruer W L, Tabak M, et al. Absorption of ultra-intense laser pulses[J]. Phys Rev Lett, 1992, 69(9) : 1383.
  • 5Malka G, Miquel J L. Experimental confirmation of ponderomotive-force electrons produced by an ultrarelativistic laser pulse on a solid target[J]. Phys Rev Lett, 1996, 77(1):75.
  • 6Beg F N, Bell A R, Dangor A E, et al. A study of picosecond laser-solid interactions up to 10^19 Wcm-^2[J]. Phys Plasmas, 1997, 4(2):447.
  • 7Malka G, Fuchs J, Amiranoff F, et al. Suprathermal electron generation and channel formation by an ultrarelativistic laser pulse in an underdense preformed plasma[J]. Phys Rev Lett, 1997, 79(11):2053.
  • 8Malka G, Lefebvre E, Miquel J L. Experimental observation of electrons accelerated in vacuum to relativistic energies by a high-intensity laset[J]. Phys Rev Lett, 1997, 78(17) :3314.
  • 9Schlegel Th, Bastiani S, Gremillet L, et al. Comparison of measured and calculated X-ray and hot-electron production in short-pulse lasersolid interactions at moderate intensities[J]. Phys Rev E, 1999, 60(2):2209.
  • 10Alexei Zhldkov, Akira Sasaki, Takayuki Utsumi, et al. Prepulse effects on the interaction of intense femtosecond laser pulses with hlgh-Z solids[J]. Phys Rev E, 2000, 62(5), 7232.

共引文献15

同被引文献23

  • 1周维民,谷渝秋,丁永坤,郑志坚,蔡达峰,淳于书泰,温天舒,陈豪,焦春晔,葛芳芳,王光昶,尤永禄玲,何颖玲.超短超强激光与Cu靶相互作用中质子背向发射的实验测量[J].强激光与粒子束,2004,16(11):1406-1408. 被引量：12
  • 2徐雪春,林理彬,蒋波,李军豪,邹萍.一种新型辐射变色膜的γ射线辐照研究[J].强激光与粒子束,2005,17(2):291-294. 被引量：15
  • 3唐翠明,谷渝秋,周维民,杨向东,温贤伦,洪伟,温天舒.100TW激光与等离子体相互作用中质子背向发射的能谱测量[J].强激光与粒子束,2007,19(1):5-8. 被引量：9
  • 4陈文琇,刘爱国.某些添加剂对PVG膜剂量计的效应[J].辐射研究与辐射工艺学报,1997,15(1):15-19. 被引量：2
  • 5Butson M J,Yu P K N,Cheung T,et al.Radiochromic film for medical radiation dosimetry[J].Materials Science and Engineering,2003,R41:61-120.
  • 6Bishop W P,Humpherys K C,Randtke P T.Poly(halostyrene) thin film dosimeters for high doses[J].Review of Scientific Instruments,1973,44:443-452.
  • 7Mclaughlin W L,Humphreys K C,Levine H,et al.The gamma-ray response of radiochromic dye films at different absorbed doses[J].Radiation Physics and Chemistry,1981,18:987-999.
  • 8Mclaughlin W L,Chen Y D,Soares C,et al.Sensitometry of the response of a new radiochromic film dosimeter to gamma radiation and electron beams[J].Nuclear Instruments and Methods in Physics Research,1991,A302:165-176.
  • 9McLaughlin W L,Puhl J M,Miller A.Temperature and relative humidity dependence of radiochromic film dosimeter response to gamma and electron radiation[J].Radiation Physics and Chemistry,1995,46(4-6):1227-1233.
  • 10Schwoerer H,Pfotenhauer S,Jackel O,et al.Laser-plasma acceleration of quasi-monoenergetic protons from microstructured targets[J].Nature,2006,439(26):445-448.

引证文献4

二级引证文献9

强激光与粒子束
2004年 第7期

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部