空位在由范德华力束缚的两个氖原子间的离域化。

Delocalization of a Vacancy across Two Neon Atoms Bound by the van der Waals Force.

作者信息

Sann H, Schober C, Mhamdi A, Trinter F, Müller C, Semenov S K, Stener M, Waitz M, Bauer T, Wallauer R, Goihl C, Titze J, Afaneh F, Schmidt L Ph H, Kunitski M, Schmidt-Böcking H, Demekhin Ph V, Cherepkov N A, Schöffler M S, Jahnke T, Dörner R

机构信息

Institut für Kernphysik, Universität Frankfurt, Max-von-Laue-Str. 1, 60438 Frankfurt, Germany.

Institut für Physik und Center for Interdisciplinary Nanostructure Science and Technology, Universität Kassel, Heinrich-Plett-Strasse 40, 34132 Kassel, Germany.

出版信息

Phys Rev Lett. 2016 Dec 23;117(26):263001. doi: 10.1103/PhysRevLett.117.263001. Epub 2016 Dec 20.

DOI:10.1103/PhysRevLett.117.263001

PMID:28059541

Abstract

We experimentally study 2p photoionization of neon dimers (Ne_{2}) at a photon energy of hν=36.56 eV. By postselection of ionization events which lead to a dissociation into Ne^{+}+Ne we obtain the photoelectron angular emission distribution in the molecular frame. This distribution is symmetric with respect to the direction of the charged vs neutral fragment. It shows an inverted Cohen-Fano double slit interference pattern of two spherical waves emitted coherently but with opposite phases from the two atoms of the dimer.

摘要

我们在光子能量为hν = 36.56 eV的条件下，对氖二聚体（Ne₂）的双光子光电离进行了实验研究。通过对导致解离为Ne⁺ + Ne的电离事件进行后选择，我们获得了分子坐标系中的光电子角发射分布。该分布相对于带电碎片与中性碎片的方向是对称的。它呈现出一种倒置的科恩 - 法诺双缝干涉图案，该图案由来自二聚体两个原子的相干发射但相位相反的两个球面波组成。