Laser spectroscopy of the 2S1/2 - 2P1/2, 2P3/2 transitions in stored and cooled relativistic C3+ ions

D. Winzen, V. Hannen, M. Bussmann, A. Buß, C. Egelkamp, L. Eidam, Zhongkui Huang, D. Kiefer, S. Klammes, T. Kuhl, M. Loeser, Xinwen Ma, W. Nörtershäuser, H. Ortjohann, R. Sánchez, M. Siebold, T. Stöhlker, J. Ullmann, J. Vollbrecht, T. Walther, H. Wang, C. Weinheimer, D. Winters
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Abstract

The $^2S_{1/2} - ^2P_{1/2}$ and $^2S_{1/2} - ^2P_{3/2}$ transitions in Li-like carbon ions stored and cooled at a velocity of $\beta \approx 0.47$ in the Experimental Storage Ring (ESR) at the GSI Helmholtz Centre in Darmstadt have been investigated in a laser spectroscopy experiment. Resonance wavelengths have been obtained using a new continuous-wave UV laser system and a novel extreme UV (XUV) detection system used to detect forward emitted fluorescence photons. The results obtained for the two transitions are compared to existing experimental and theoretical data. A discrepancy found in an earlier laser spectroscopy measurement at the ESR with results from plasma spectroscopy and interferometry could be resolved and agreement between experiment and theory is confirmed. Nonetheless, the experimental uncertainty is still smaller than that of state-of-the art theory.
储存和冷却的相对论性C3+离子中2S1/2 - 2P1/2、2P3/2跃迁的激光光谱
在达姆施塔特GSI亥姆霍兹中心的实验存储环(ESR)中以$\beta \approx 0.47$的速度储存和冷却的类锂碳离子的$^2S_{1/2} - ^2P_{1/2}$和$^2S_{1/2} - ^2P_{3/2}$跃迁进行了激光光谱实验研究。利用一种新的连续波紫外激光系统和一种新型的极紫外(XUV)检测系统获得了共振波长,该系统用于检测正向发射的荧光光子。对这两种跃迁的结果与已有的实验和理论数据进行了比较。在ESR的早期激光光谱测量中发现的与等离子体光谱和干涉测量结果的差异可以得到解决,并证实了实验和理论之间的一致性。尽管如此,实验的不确定性仍然小于最先进的理论。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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