Abstract

The absorption spectrum of B i in the 1350–1900-Å region has been photographed in the third and fourth orders of a 6.6-m spectrograph. The 2s² 2p ²P°–2s² nd ²D and 2s² 2p ²P°–2s² ns ²S series were observed to n = 39 and n = 10, respectively, leading to the assignment of 35 new term levels in B i. Extrapolation of the nd ²D series yields 66 928.0±0.2 cm⁻¹, in agreement with the best previously published value for the ionization potential of boron.

© 1974 Optical Society of America

Absorption spectrum of Si i between 1500 and 1900 Å

C. M. Brown, S. G. Tilford, R. Tousey, and M. L. Ginter
J. Opt. Soc. Am. 64(12) 1665-1682 (1974)

Absorption spectrum of Au i between 1300 and 1900 Å

C. M. Brown and M. L. Ginter
J. Opt. Soc. Am. 68(2) 243-246 (1978)

Absorption spectrum of Pb i between 1350 and 2041 Å

C. M. Brown, S. G. Tilford, and Marshall L. Ginter
J. Opt. Soc. Am. 67(9) 1240-1252 (1977)

Absorption spectrum of Ge i between 1500 and 1900 Å

C. M. Brown, S. G. Tilford, and Marshall L. Ginter
J. Opt. Soc. Am. 67(5) 584-606 (1977)

Absorption spectrum of Ca i in the 1580–2090-Å region

C. M. Brown, S. G. Tilford, and M. L. Ginter
J. Opt. Soc. Am. 63(11) 1454-1462 (1973)