Photodetachment spectroscopy of a doubly charged anion: Direct observation of the repulsive Coulomb barrier

被引：141

作者：

Wang, XB

Ding, CF

Wang, LS ^{[1
]}

机构：

[1] Washington State Univ, Dept Phys, Richland, WA 99352 USA

[2] Pacific NW Lab, WR Wiley Environm Mol Sci Lab, Richland, WA 99352 USA

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 81卷 / 16期

关键词：

D O I：

10.1103/PhysRevLett.81.3351

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Photoelectron spectra of citric acid doubly charged anion were measured. The repulsive Coulomb barrier due to the two excess charges was directly probed and estimated to be about similar to 1.9-2.5 eV. The adiabatic binding energy of the second electron was measured to be 1.0 eV. Two detachment channels were observed, with the second channel at similar to 0.6 eV higher in binding energy. The current study presents the first photodetachment experiments of a multiply charged anion and opens up new opportunities to study these novel molecular species. [S0031-9007(98)07383-9].

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页码：3351 / 3354

页数：4

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