Negative Ion of Boron: An Experimental Study of the3PGround State

1998/03/23 by M. Scheer, R. C. Bilodeau, H. K. Haugen · 6 citations
Physics and Astronomy · Chemistry · #Atomic and Molecular Physics #Advanced Chemical Physics Studies #X-ray Spectroscopy and Fluorescence Analysis #Physics #Ground state #Ionic bonding #Boron #Electron affinity (data page) #Ion #Atomic physics #Electron #Crystallography #Chemistry #Quantum mechanics #Molecule #Nuclear physics

paper · doi:10.1103/physrevlett.80.2562

openalex publication_date 1998/03/23 · openalex created_date 2025/10/10 · openalex updated_date 2026/06/26

Abstract

An investigation of the B^\ensuremath-(2p²³P_J)\ensuremath→B(2p²P_J^\ensuremath') photodetachment thresholds using a tunable infrared laser source has yielded a substantially improved value for the electron affinity of boron and the first experimental data on the fine structure of the ionic ground state. The J\phantom\rule0ex0ex=\phantom\rule0ex0ex0--1 and J\phantom\rule0ex0ex=\phantom\rule0ex0ex1--2 splittings are found to be 3.23(15)cm^\ensuremath-1 and 5.18(15)cm^\ensuremath-1, respectively, and the electron affinity is determined to be 2256.12(20)cm^\ensuremath-1 [(279.723(25) meV]. The present result for the electron affinity is the first to challenge the extensive and controversial theoretical studies of this system.

Citations

• Resonant Ionization Spectroscopy ofBa−: Metastable and Stable Ions
• Threshold photodetachment ofH−
• High-resolution determination of the electron affinity of fluorine and bromine using crossed ion and laser beams
• Threshold photodetachment ofAl−:Electron affinity and fine structure
• Binding Energies in Atomic Negative Ions: II

Cited by

• Near-threshold laser spectroscopy of iridium and platinum negative ions: Electron affinities and the threshold law
• Laser spectroscopic measurements of binding energies and fine-structure splittings ofCo−,Ni−,Rh−,andPd−
• Accurate electron affinity of Co and fine-structure splittings ofCo−via slow-electron velocity-map imaging
• Electron affinity of indium and the fine structure of In−measured using infrared photodetachment threshold spectroscopy
• Electron affinity of thallium measured with threshold spectroscopy
• Electron affinity (data page) [wikipedia]