New experimental results for the doubly excited quartet levels in B?ize -2 roman III— have been obtained using the beam-foil excitation technique. Both wavelengths and lifetimes are reported and the wavelength accuracy is higher than that in most previous investigations. A remeasurement of the 2s2p ${\mathrm{}}^4$$P^o$ –2$p^2$ ${\mathrm{}}^4$P transition yields a wavelength of 1702.1±0.1 Å, which confirms the most accurate theoretical value 1701.8 Å. The important 2s3s ${\mathrm{}}^4$S–2s3p ${\mathrm{}}^4$$P^o$ transition has been observed for the first time. The new findings are discussed in relation to recent calculations.

• Received 4 February 1986

DOI:https://doi.org/10.1103/PhysRevA.34.231