Electron-ion recombination in the cryogenic storage ring CSR

磁存储环上的电子-离子复合是一个成熟的研究领域。然而，磁存储环有其固有的局限性，即只有质量电荷比相对较低的离子才能存储足够长的时间，以便进行有意义的重组实验。这种情况在静电存储环上是完全不同的，静电存储环能够存储与它们的质量无关的离子。本文提出在海德堡马克斯-普朗克-核物理研究所的静电低温储存环CSR中，利用这种能力与原子离子（Fe+, Xe+）和富勒烯（C60）离子进行新型电子-离子复合研究。特别是，我们将研究通过束缚电子的集体激发，许多电子系统的电子-离子复合进行到什么程度。

Electron-ion recombination at magnetic storage rings is a well established field of research. Nevertheless, magnetic storage rings have the inherent limitation, that only ions with comparatively low mass-to-charge ratios can be stored for sufficiently long times such that meaningful recombination experiments can be carried out. The situation is fundamentally different at electrostatic storage rings which are capable of storing ions independent of their mass. Here, it is proposed to make use of this capability for novel electron-ion recombination studies with atomic ions (Fe+, Xe+) and with fullerene (C60) ions at the electrostatic cryogenic storage ring CSR of the Heidelberg Max-Planck-Institute for Nuclear Physics. In particular, we will investigate in how far electron-ion recombination of many electron-systems proceeds via collective excitations of bound electrons.