5 Conclusions

We have computed a complete radiative dataset for the n=2 transitions in the astrophysically relevant boron sequence. Extensive comparisons with other calculations and experiment allow us to conclude that the present work is statistically the most reliable to date. This study has been made possible by the facilities in the atomic structure code SUPERSTRUCTURE for the effective rendering of electron correlation effects and relativistic interactions for low to intermediate Z ions as well as for wavefunction optimization. We have also shown that the required degree of accuracy can be attained, even for low-Z ions, with a reduced $n\leq 3$ orbital basis set provided that TECs are used to simulate higher-order effects. Therefore this practical and reliable approach will be extended to generate radiative data for other isoelectronic sequences within the objectives of the IP.

Acknowledgements

Part of the present work was carried out during visits by MEG and CM to the Observatoire de Paris, Meudon, France. The hospitality received is gratefully acknowledged. The visits were funded by the CNRS, IVIC, CONICIT, UNIMET, the Observatoire de Paris and the Ministère des Affaires Étrangères. This research has been supported by CONICIT under contract No. S1-95000521.