Abstract

The fourth spectrum of manganese was investigated from 500 to 2500 Å with two-meter normal-incidence vacuum spectrographs. The wavelengths of the spectral lines, excited in both sliding-spark and condensed-spark discharges in helium, were determined with an uncertainty of ±0.006 Å. Forty seven new energy levels belonging to sixteen terms were found and the whole term system was recalculated on the basis of the new measurements. Four hundred and twenty eight spectral lines were classified as transitions between levels of the 3d³, 3d³4s, and 3d³4d configurations and levels of the 3d³4p configuration.

© 1967 Optical Society of America

New Energy Levels of Doubly Ionized Manganese (Mn iii)

Stanley J. Yarosewick, James J. DaVia, and Frank L. Moore
J. Opt. Soc. Am. 61(6) 732-739 (1971)

Analysis of the Spectrum of Triply Ionized Magnesium (Mg iv)

Marie-Christine Artru and Victor Kaufman
J. Opt. Soc. Am. 62(8) 949-957 (1972)

Analysis of the Spectrum of Triply Ionized Praseodymium (Pr iv)

Jack Sugar
J. Opt. Soc. Am. 55(9) 1058-1059 (1965)

Preliminary Analysis of the Spectrum of Triply Ionized Gadolinium (Gd iv)*

J. F. Kielkopf and H. M. Crosswhite
J. Opt. Soc. Am. 60(3) 347-351 (1970)

Extension of the analysis of triply ionized aluminum (Al iv)

Marie-Christine Artru and Victor Kaufman
J. Opt. Soc. Am. 65(5) 594-599 (1975)