Precision measurements and calculations in the B II spectrum: Wavelengths, isotope shifts, and oscillator strengths

Abstract

Recordings of boron spectra with high-dispersion grating spectroscopy and Fourier transform spectroscopy have provided high-precision wavelengths and transition isotope shifts for all LS-allowed transitions involving the 2s{sup 2}, 2s2p, and 2p{sup 2} configurations in the spectrum of singly ionized boron BII. Large-scale calculations of the same quantities have been performed with the multiconfiguration Hartree-Fock method. There is agreement between the measurements and the calculations within the narrow error limits for all the lines. The calculations also yielded oscillator strengths and hyperfine-structure constants for the same transitions. {copyright} {ital 1998} {ital The American Physical Society}