Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994apj...429l..45j&link_type=abstract
The Astrophysical Journal, vol. 429, no. 1, pt. 2, p. L45-L48
Astronomy and Astrophysics
Astronomy
17
Atomic Spectra, Atomic Structure, Boron Isotopes, Hartree Approximation, Hyperfine Structure, Isotope Effect, Galactic Evolution, Hubble Space Telescope, Ultraviolet Astronomy
Scientific paper
An extensive multiconfiguration Hartree-Fock (MCHF) calculation of the isotope shift and hyperfine structure in the resonance line of B II at 1362 A has been performed. The calculated B-11 to B-10 isotope shift is 13.3 mA with an estimated uncertainty of 1%. The calculated interaction constants A and B give a hyperfine structure splitting of less than 0.45 mA for both isotopes. The size of the isotope shift in the B II line is similar to the limit of detection in high-resolution observations with the Goddard High Resolution Spectrograph aboard the Hubble Space Telescope when side A becomes operational after the service mission.
Froese Fischer Charlotte
Johansson Sveneric G.
Jönsson Per
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