Eur. Phys. J. D (2015) 69: 128
https://doi.org/10.1140/epjd/e2015-50871-7

Regular Article

Energies, expectation values, fine structures and hyperfine structures of the ground state and excited states for boron

School of Physics, Beijing Institute of Technology, Beijing 100081, P.R. China

^a e-mail: chenchao@bit.edu.cn

Received: 5 December 2014
Received in final form: 23 March 2015
Published online: 13 May 2015

Abstract

The 1s²2s²2p²P ground state and the 1s²2s²np (n = 3, 4) ²P, 1s²2s²3s²S, 1s²2s2p²⁴P, ²L (L = S, P, D), 1s²2s2p3s⁴P^o, 1s²2s2p3p⁴S, and 1s²2p³⁴S ^o , ²L^o (L = P, D) excited states of boron are calculated using the Rayleigh-Ritz variational method with multiconfiguration interaction wave functions. Energies, expectation values such as the electron density at the nucleus ρ(0) and radial moments ⟨ rⁿ ⟩, and fine-structure splittings are calculated. Hyperfine structure parameters and magnetic coupling constants of these states are also calculated. The present results are in good agreement with theoretical and experimental data available in the literature and should provide valuable reference data for future theoretical calculations and experimental measurements.