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0.351μm激光辐照Au盘靶吸收、散射规律的实验研究

刘慎业 滕浩 丁永坤 丁耀南 苏春晓 金根芝 张海英 陈玉婷 郑志坚 唐道源

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0.351μm激光辐照Au盘靶吸收、散射规律的实验研究

刘慎业, 滕浩, 丁永坤, 丁耀南, 苏春晓, 金根芝, 张海英, 陈玉婷, 郑志坚, 唐道源

ABSORPTION AND SCATTERED LIGHT OF GOLD DISKS IRRADIATED WITH 0.351μm LASER LIGHT

LIU SHEN-YE, TEN HAO, DING YONG-KUN, DING YAO-NAN, SU CHUN-XIAO, JIN GEN-ZHI, ZHANG HAI-YING, CHEN YU-TING, ZHENG ZHI-JIAN, TANG DAO-YUAN
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  • 在“星光Ⅱ”激光装置上,利用80只分立式探测器研究了约0.8ns,0.351μm激光辐照Au盘靶的吸收、散射.结果表明,强度约为5×1014W/cm2的激光以10°角入射,吸收可达90%以上;但是,以45°角入射,吸收仅为75%左右,散射高达25%.散射主要来自未被等离子体充分吸收的激光在弯曲临界面上的反射,同时伴随少量受激布里渊散射.吸收的理论计算与实验结果进行了比较,两者符合较好.
    The experiments used the “Xingguang Ⅱ” laser facility to irradiate gold disks at some chosen angle of incidence. In this paper, we report the absorption and angular distribution of scattered lights of 0.351μm laser light by Au disks. The experiments have shown that the absorption by Au disk is higher than that irradiated with 0.53 or 1.05μm laser light. The angular distribution of scattered lights proves that scattered lights include stimulated Brillouin scattering and specular reflection from critical surface. Based on inverse bremsstrahlung absorption, the absorption obtained by simulation agrees with the experimental results.
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  • 文章访问数:  5589
  • PDF下载量:  519
  • 被引次数: 0
出版历程
  • 收稿日期:  1996-11-14
  • 修回日期:  1997-04-18
  • 刊出日期:  1997-05-05

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