Accurate electron affinity of lanthanum atom. Issue 13 (January 2020)

• Record Type: Journal Article
• Authors: Lu, Y; Tang, R; Fu, X; Ning, C
• Is Part Of: Journal of physics. Volume 1412:Issue 13(2019)
• Publication Date: 2020-01
• Subjects: Physics -- Congresses; 530.5
• DOI: 10.1088/1742-6596/1412/13/132026
• Languages: English
• ISSNs: 1742-6588

Abstract

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.