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飞秒激光与固体靶相互作用中自生磁场的测量 被引量：3

Measurement of spontaneous magnetic field in the interactions of femtosecond laser with solid targets
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摘要 　利用OMA光学多道分析谱仪,分别在激光镜反方向和接近靶面法线方向测量了2倍频谐波的精细结构。在激光功率密度为5×1017W/cm2的条件下,通过散射光2倍频谐波谱的精细结构,回推出激光与等离子体相互作用中产生的自生磁场达100T量级。 The experiment measured the fine spectrum structure of 2 doubling harmonic near normal direction of target and reflection direction of laser wave, employing OMA optical multi-channel spectrometer. Under the intensity of 5 ×1017 W/cm2 the result of measurement indicates that spontaneous magnetic field was up to 102 T level by analyzing the fine structure of 2 doubling harmonics in laser-plasma interaction.
作者 焦春晔 谷渝秋 张保汉 郑志坚 杨向东 蔡达峰 周维民 温天舒 王光昶 陈豪
机构地区 四川大学原子分子物理研究所 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5期593-596,共4页 High Power Laser and Particle Beams
基金 中国工程物理研究院基金资助课题(2000Z0206) 国家自然科学基金项目资助课题(10275057 10275056)
关键词 自生磁场 OMA谱仪 2倍频谐波 飞秒激光等离子体 Harmonic analysis Laser produced plasmas Magnetic field measurement Spectrometers
分类号 O434.12 [机械工程—光学工程]
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参考文献13

  • 1Haines M G. Saturation mechanisms for the generated magnetic field in nonuniform laser-matter irradiation[J]. Phys Rev Lett, 1997, 78: 254-257.
  • 2Stamper J A. Review on spontaneous magnetic fields in laser-produced plasmas:phenomena and measurements[J]. Laser and Particle Beams, 1991, 9: 841-862.
  • 3Wilks S C, Kruer W L, Tabak M, et al. Absorption of ultra-intense laser pulses[J]. Phys Rev Lett, 1992, 69: 1383-1386.
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二级参考文献10

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  • 7Haines M G.Saturation mechanisms for the generated magnetic field in nonuniform laser-matter irradiation[].Physical Review Letters.1998
  • 8Borghesi M,Mackinnon A J,Gaillard R,et al.Large quasistatic magnetic fields generated by a relativistically intense laser pulse propagating in preionized plasma[].Physical Review Letters.1998
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  • 10Brian Yang T Y,Kruer W L,More R M,et al.Absorption of laser light in overdense plasmas by sheath inverse bremsstrahlung[].Physics of Plasmas.1995

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强激光与粒子束
2004年 第5期

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