Spectra of Nb XII-XVII from a low-inductance vacuum spark

Journal Article · Fri Jan 01 04:00:00 EST 1982 · J. Opt. Soc. Am.; (United States)

DOI:https://doi.org/10.1364/JOSA.72.000095· OSTI ID:5651660

Burkhalter, P G; Cohen, L; Cowan, R D; Sweeney, B V

The XUV spectrum of niobium was obtained by using a low-inductance vaccum spark and grazing-incidence, high-resolution spectrograph. Identification of wavelengths and lines were made in the 2060-A region for complex arrays involving 3d--p and 3d--4f transitions. Atomic structure calculations using relativistically corrected Hartree-Fock wave functions provided the theoretical basis for line classifications. The 3d/sup 9/--3d/sup 8/4p,4f and 3p/sup 5/3d/sup 10/-3p/sup 5/3d/sup 9/4p,4f transitions in Nb XV and satellites to the Ni-like 3d/sup 10/--3d/sup 9/4p,4f lines were classified. Energy levels for the 3d/sup 8/4p and 3d/sup 8/4f configurations in Nb XV were determined by using Slater integrals scaled by least-squares fitting.

• Research Organization: Naval Research Laboratory, Washington, D.C. 20375
• OSTI ID: 5651660
• Journal Information: J. Opt. Soc. Am.; (United States), Journal Name: J. Opt. Soc. Am.; (United States) Vol. 72:1; ISSN JOSAA
• Country of Publication: United States
• Language: English

Related Subjects

640302* -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
ALLOYS
CHARGED PARTICLES
ELECTROMAGNETIC RADIATION
ELEMENTS
ENERGY-LEVEL TRANSITIONS
EXTREME ULTRAVIOLET RADIATION
IONS
METALS
NIOBIUM IONS
RADIATIONS
REFRACTORY METALS
SPECTROSCOPY
ULTRAVIOLET RADIATION