arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1401.2385physics.atom-ph
收藏

C $^{6+}$和H $_2$之间电荷交换后的X射线发射测量

X-ray emission measurements following charge exchange between C$^{6+}$ and H$_2$

M. Fogle, D. Wulf, K. Morgan, D. McCammon, D. G. Seely, I. N. Draganić, C. C. Havener

发表信息：
Phys. Rev. A 89, 042705 (2014)
阅读 PDF
arXiv 页面 ↗HTML 原文 ↗

摘要：

本文给出了C $^{6+}$和H $_2$在碰撞速度为400 ~ 2300 km/s（1--30 keV/amu）时电荷交换后的Lyman X射线谱。通过微量热计X射线检测器测量光谱，该检测器能够通过Lyman- $δ$完全分辨C VI莱曼系发射线。测量的发射线的比率是敏感的角动量$l$ -状态填充在电荷交换过程中，并用于衡量不同的$l$ -分布模型预测莱曼排放由于电荷交换的有效性。在低速度下，我们观察到，单电子捕获和双捕获自电离有助于莱曼排放和统计$l$分布最好地描述了测得的线比。在较高的速度下，单电子捕获占主导地位，具有$l$分布，在最大值$l$处达到峰值。

英文摘要：

Lyman x-ray spectra following charge exchange between C$^{6+}$ and H$_2$ are presented for collision velocities between 400 and 2300 km/s (1--30 keV/amu). Spectra were measured by a microcalorimeter x-ray detector capable of fully resolving the C VI Lyman series emission lines though Lyman-$δ$. The ratios of the measured emission lines are sensitive to the angular momentum $l$-states populated during charge exchange and are used to gauge the effectiveness of different $l$-distribution models in predicting Lyman emission due to charge exchange. At low velocities, we observe that both single electron capture and double capture autoionization contribute to Lyman emission and that a statistical $l$-distribution best describes the measured line ratios. At higher velocities single electron capture dominates with the $l$-distribution peaked at the maximum $l$.

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。

↑