Morishita Y, Liu X-J, Saito N, Lischke T, Kato M, Prümper G, Oura M, Yamaoka H, Tamenori Y, Suzuki I H, Ueda K
National Institute of Advanced Industrial Science and Technology (AIST), NMIJ, Tsukuba 305-8568, Japan.
Phys Rev Lett. 2006 Jun 23;96(24):243402. doi: 10.1103/PhysRevLett.96.243402. Epub 2006 Jun 22.
Interatomic Coulombic decay (ICD) from an Auger-final dicationic state is observed in the Ar dimer. A 2p inner-shell vacancy created by photoionization is replaced with 3s and 3p vacancies via intra-atomic Auger decay. The Auger-final dicationic state is subject to ICD in which one of the 3p electrons in the same Ar atom fills the 3s vacancy while one of the 3p electrons from the neighboring Ar atom is emitted as an ICD electron. This ICD process is unambiguously identified by electron-ion-ion coincidence spectroscopy in which the kinetic energy of the ICD electron and the kinetic energy release between Ar+ and Ar2+ are measured in coincidence.
在氩气二聚体中观察到了来自俄歇终态双正离子态的原子间库仑衰变（ICD）。通过光电离产生的2p内壳层空位经原子内俄歇衰变被3s和3p空位取代。俄歇终态双正离子态会发生ICD，其中同一个氩原子中的一个3p电子填充3s空位，而相邻氩原子中的一个3p电子作为ICD电子发射出去。这个ICD过程通过电子-离子-离子符合光谱法被明确识别，在该方法中，ICD电子的动能以及Ar⁺和Ar²⁺之间的动能释放是同时测量的。
