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arXiv 1006.2664physics.atm-clus
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氦原子二聚体光电离引起的原子间库仑衰变:振动结构的观测

Interatomic Coulombic Decay following Photoionization of the Helium Dimer: Observation of Vibrational Structure

T. Havermeier, T. Jahnke, K. Kreidi, R. Wallauer, S. Voss, M. Schöffler, S. Schössler, L. Foucar, N. Neumann, J. Titze, H. Sann, M. Kühnel, J. Voigtsberger, J. … 展开作者

T. Havermeier, T. Jahnke, K. Kreidi, R. Wallauer, S. Voss, M. Schöffler, S. Schössler, L. Foucar, N. Neumann, J. Titze, H. Sann, M. Kühnel, J. Voigtsberger, J. H. Morilla, W. Schöllkopf, H. Schmidt-Böcking, R. E. Grisenti, R. Dörner

摘要:

利用同步辐射,我们在一个Shakeup过程中同时激发和激发了氦二聚体(He_2)中的一个氦原子。发现二聚体离子(即He^[*+](n = 2; 3)-He)的布居态通过原子间库仑衰变去激发。这导致从中性点发射第二个电子和随后的库仑爆炸。在这封信中,我们提出了一个测量的动量的碎片,在这个反应过程中产生的。两个He^+离子的电子能量分布和动能释放显示出明显的振荡,我们将其归因于二聚体离子振动波函数的结构。

英文摘要:

Using synchrotron radiation we simultaneously ionize and excite one helium atom of a helium dimer (He_2) in a shakeup process. The populated states of the dimer ion (i.e. He^[*+](n = 2; 3)-He) are found to deexcite via interatomic coulombic decay. This leads to the emission of a second electron from the neutral site and a subsequent coulomb explosion. In this letter we present a measurement of the momenta of fragments that are created during this reaction. The electron energy distribution and the kinetic energy release of the two He^+ ions show pronounced oscillations which we attribute to the structure of the vibrational wave function of the dimer ion.

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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