Abstract

Si-like spectra of Cu to Mo have been observed in tokamak-generated plasmas, and Cu to As in laser-produced plasmas. Wavelengths in the range of 86 to 300 Å were recorded photographically with a 2.2-m grazing-incidence spectrograph on the tokamak, and a 10.7-m grazing-incidence spectrograph for the laser plasmas. Wavelength accuracy is estimated to be ±0.005 Å. The transition arrays 3s23p2−3s3p3 and 3s23p2−3s23p3d were identified. Classifications were established by comparison with Hartree–Fock calculations of wavelengths and relative intensities along isoelectronic sequences. Spectra of Rb and Sr were not observed, but interpolated values of wavelengths for these ions are derived from the rest of the data. Ground configuration intervals known from magnetic dipole transitions are compared with Dirac–Fock calculations to predict unknown values and to correct misidentifications.

© 1990 Optical Society of America

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