Open AccessAccurate electron affinity of lanthanum atom
Author(s) -
Yunqing Lu,
Rulin Tang,
Xiaoxi Fu,
Chuangang Ning
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1412/13/132026
Subject(s) - lanthanum , electron affinity (data page) , electron , atomic physics , ion , atom (system on chip) , electronic structure , x ray photoelectron spectroscopy , atomic number , penning trap , spectroscopy , electron configuration , work (physics) , chemistry , materials science , physics , molecule , computational chemistry , inorganic chemistry , nuclear magnetic resonance , nuclear physics , organic chemistry , quantum mechanics , computer science , thermodynamics , embedded system
Synopsis Atomic lanthanum anion La − is the best candidate for laser cooling of any atomic anions by far. The previous theoretical studies showed that La − has very a complicated electronic structure, which cannot be well resolved by the traditional photoelectron spectroscopy. In the present work, we used the slow-electron velocity-map imaging method in combination with an ion trap to measure the electronic structure of La − . The electron affinity of La is accurately determined to be 4496.97(20) cm −1 or 0.557553(25) eV.