Systematic mapping of high-lying even-parity levels (low-lying configurations) of the samarium atom below the first ionization potential was carried out with a two-step photoexcitation and photoionization method. Five hundred seventy-one new energy levels were discovered in the region 34 850–45 300 cm<sup>−1</sup>, and an unambiguous assignment of angular momenta was given to most of the energy levels in accordance with the electric dipole selection rules.
© 2000 Optical Society of America
(020.4180) Atomic and molecular physics : Multiphoton processes
(300.6210) Spectroscopy : Spectroscopy, atomic
(300.6350) Spectroscopy : Spectroscopy, ionization
(300.6410) Spectroscopy : Spectroscopy, multiphoton
T. Jayasekharan, M. A. N. Razvi, and G. L. Bhale, "Investigations of new high-lying even-parity energy levels of the samarium atom below its first ionization limit," J. Opt. Soc. Am. B 17, 1607-1615 (2000)