Electron affinity of the hafnium atom

被引：21

作者：

Tang, Rulin ^{[1
]}

Chen, Xiaolin ^{[1
]}

Fu, Xiaoxi ^{[1
]}

Wang, Huan ^{[1
]}

Ning, Chuangang ^{[1
,2
]}

机构：

[1] Tsinghua Univ, Dept Phys, State Key Lab Low Dimens Quantum Phys, Beijing 10084, Peoples R China

[2] Collaborat Innovat Ctr Quantum Matter, Beijing, Peoples R China

来源：

PHYSICAL REVIEW A | 2018年 / 98卷 / 02期

基金：

中国国家自然科学基金;

关键词：

NEGATIVE-IONS; BINDING-ENERGIES; PHOTODETACHMENT; PHOTOELECTRON; SPECTROSCOPY; ANIONS; DYNAMICS; OXYGEN;

D O I：

10.1103/PhysRevA.98.020501

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Hafnium is the last transition-metal element with an undetermined electron affinity. Using a slow-electron velocity-map imaging spectrometer equipped with a cold ion trap, the electron affinity of hafnium atoms is measured to be 1436(5)cm(-1) or 0.1780(6)eV. The cold ion trap employed in the present measurement is found to be crucial for reducing the background noise from the hafnium hydride anions.

引用

页数：4

共 29 条

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