Wavelengths and Intensities in the First Spectrum of Bromine, 2000 to 13000 A.

The first spectrum of bromine, Br I, has been newly investigated using electrodeless discharge tubes as light sources. The observations have led to a list of wavelengths and estimated intensities of 1056 lines emitted by neutral atoms in the region from 12965 A in the infrared to 3325 A in the ultraviolet. Most of the wavelengths are given to 0.01 A and the intensities are estimated on a relative scale between 1 and 75,000. Lines of Br I were not found in the ultraviolet between 3325 and 1700 A.