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Beam-foil spectroscopy; fluorine; lifetimes

Beam-foil spectrum of fluorine was recorded in the wavelength region of 2000–4500 Å using F⁺ ion beams of energies ranging from 216 to 296 KeV. Some of the spectral lines of fluorine observed during the present investigation are hitherto unknown. Mean lifetimes of a few of the excited levels of F II and F III are reported for the first time.

B N Raja Sekhar¹ S Padmanabhan¹ Aparna Shastri¹ P Meenakshi Raja Rao¹ M B Kurup^{1 2} K G Prasad^{1 2}

1. Spectroscopy Division, Bhabha Atomic Research Centre, Trombay, Mumbai - 400 085, India
2. Tata Institute of Fundamental Research, Colaba, Mumbai - 400 005, India

Published

March 1998

Manuscript received

14 October 1997