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arXiv physics/0312090physics.atom-ph
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低能类氢π原子X射线标准

Low-Energy X-Ray Standards from Hydrogenlike Pionic Atoms

Paul Indelicato, Leopold Simons, Detlev Gotta, Dimitri Anagnostopoulos

摘要:

我们展示了一个完整的程序,其中包括在建立一个X射线能量标准尺度与使用几个体原子,在几个千电子伏的范围内的第一步。使用轻的π和μ原子以及来自电子回旋离子源的单电子和双电子离子。跃迁能量可以从量子电动力学计算,这意味着只需要测量非常有限的子集并与理论进行比较,同时提供大量的标准线。在这里,我们表明,在介子氖原子的圆形跃迁,完全剥离其电子,揭示谱线是狭窄的,对称的,以及可重复的。我们用这些谱线来确定复杂电子系统的跃迁能,如金属Ti中的K1,2跃迁,它可以作为次级标准。

英文摘要:

We demonstrate the first step of a complete program, which consists in establishing an x-ray energy standard scale with the use of few-body atoms, in the few keV range. Light pionic and muonic atoms as well as one and two-electron ions from electron-cyclotron ion sources are used. The transition energies are calculable from quantum-electrodynamics, meaning that only a very limited subset need be measured and compared with theory, while providing a large number of standard lines. Here we show that circular transitions in pionic neon atoms, completely stripped from their electrons, reveal spectral lines which are narrow, symmetric, and well reproducible. We use these lines for the energy determination of transition energies in complex electronic systems, like the K1,2 transitions in metallic Ti, which may serve as secondary standard.

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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