Newly measured and calculated wavelengths in the vacuum ultraviolet spectrum of neutral nitrogen.
The NBS 10.7-m vacuum spectrograph was used in the second order to obtain precision measurements of three N I lines at 1492-1495 A (2p(3)(2)D degrees -2p(2)3s(2)P) and four at 1742-1745 A (2p(3)(2)P degrees -2p(2) 3(s)(2)P). By combining these values with other available information on the energy levels of the neutral nitrogen atom, seventy-eight calculated wavelengths of N I from 908 A to 1745 A are given with uncertainties of 0.001 A or less.
Kaufman
V
V
Spectroscopy Section, National Bureau of Standards, Washington, DC 20234, USA.
Ward
J F
JF