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arXiv 1606.06334physics.atom-phastro-ph.IMphysics.ins-detphysics.plasm-ph
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高电荷态氪离子双电子复合跃迁的极化测量

Polarization measurement of dielectronic recombination transitions in highly charged krypton ions

Chintan Shah, Holger Jörg, Sven Bernitt, Stepan Dobrodey, René Steinbrügge, Christian Beilmann, Pedro Amaro, Zhimin Hu, Sebastian Weber, Stephan Fritzsche, Andr… 展开作者

Chintan Shah, Holger Jörg, Sven Bernitt, Stepan Dobrodey, René Steinbrügge, Christian Beilmann, Pedro Amaro, Zhimin Hu, Sebastian Weber, Stephan Fritzsche, Andrey Surzhykov, José R. Crespo López-Urrutia, Stanislav Tashenov

摘要:

我们报告的线性极化测量的x射线发射由于双电子复合成高电荷氪离子。在类He至类O电荷状态中的离子被填充在电子束离子阱中,其中电子束能量被调整为复合共振,以产生$Kα$ x射线。用新开发的康普顿旋光仪,使用铍散射目标和12个硅X射线探测器二极管采样的散射的X射线的方位角分布检测的X射线。提取的几个双电子复合跃迁的线偏振度与相对论畸变波计算结果一致。我们还证明了高灵敏度的极化Breit相互作用,这是显着的中等$Z$元素,如氪。实验结果可用于高温天体物理和实验室聚变等离子体的偏振诊断。

英文摘要:

We report linear polarization measurements of x rays emitted due to dielectronic recombination into highly charged krypton ions. The ions in the He-like through O-like charge states were populated in an electron beam ion trap with the electron beam energy adjusted to recombination resonances in order to produce $Kα$ x rays. The x rays were detected with a newly developed Compton polarimeter using a beryllium scattering target and 12 silicon x-ray detector diodes sampling the azimuthal distribution of the scattered x rays. The extracted degrees of linear polarization of several dielectronic recombination transitions agree with results of relativistic distorted--wave calculations. We also demonstrate a high sensitivity of the polarization to the Breit interaction, which is remarkable for a medium-$Z$ element like krypton. The experimental results can be used for polarization diagnostics of hot astrophysical and laboratory fusion plasmas.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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