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金激光等离子体X射线精细结构谱研究

杨国洪 张继彦 张保汉 周裕清 李 军

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金激光等离子体X射线精细结构谱研究

杨国洪, 张继彦, 张保汉, 周裕清, 李 军

ANALYSIS OF FINE STRUCTURE OF X-RAY SPECTRA FROM LASER-IRRADIATED GOLD DOT

YANG GUO-HONG, ZHANG JI-YAN, ZHANG BAO-HAN, ZHOU YU-QING, LI JUN
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  • 在“星光-Ⅱ”钕玻璃激光装置上,聚焦三倍频激光束于真空室内Au微点靶表面,形成高剥离 态热等离子体光源.用Pentaerythritol(PET)(2d=0.8742nm)平晶谱仪,摄录了Au离子在0.3 —0.4nm范围内的X射线发射谱.基于相对论性多组态Dirac-Fock程序包,建立了相对论性次 组态平均能计算程序,结合自旋-轨道劈裂跃迁系(SOSA)理论,计算了Au离子类Cu至类Ge离 子细致带结构谱孤立峰的中心波长和半高全宽.26条3d—nf(n=5,6,7)类Ni至类As离子子组态 跃迁形成的
    The X-ray emission spectra from highly stripped plasma of gold has been observed by focusing a Nd-glass frequency-tripled laser beam onto the surface of the gol d dot at the XINGGUANG Ⅱ laser facilities. The spectra of gold ions in the rang e of 0.0003nm—0.0004nm was recorded using the plate PET (2d=0.8742nm) crystal spectrometer. The code of average energy of relativistic subarrays was built on the basis of the code MCDF (Multi-Configuration-Dirac-Fock). Using the spin-orbi t-split-arrays (SOSA) formalism, mean wavelengths and full widths at half height of isolated peaks of subarrays of lower charged gold ions, isoelectronic with C u,Zn,Ga and Ge, was calculated. Twenty-six lines are interpreted, they pertain mainly to transitions of 3d-nf (n=5,6, 7) of gold ions from Ni-like to As-like. These results of experiment and calculation have important application in pla sma diagnostics and examination of high Z elemental atomic structure calculation .
    • 基金项目: 国家自然科学基金(批准号:19674049)和中国工程物理研究院基金(批准号:20000216)资助 的课题.
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  • 文章访问数:  6704
  • PDF下载量:  741
  • 被引次数: 0
出版历程
  • 收稿日期:  2000-01-03
  • 修回日期:  2000-06-02
  • 刊出日期:  2000-06-05

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