Analysis of the Spectra of Pd-Like Praseodymium and Neodymium (Pr XIV and Nd XV)

• Published in: Physica scripta Vol. 71; no. 6; pp. 589 - 598
• Main Authors: Churilov, S S, Ryabtsev, A N, Wyart, J-F, Tchang-Brillet, W-Ü L, Joshi, Y N
• Format: Journal Article
• Language: English
• Published: IOP Publishing 01.01.2005
• Subjects: Astrophysics; Physics
• ISSN: 1402-4896; 0031-8949; 1402-4896
• DOI: 10.1088/0031-8949/71/6/004

The spectra of palladium-like Pr13+ and Nd14+ ions excited in a laser-produced plasma source have been investigated in the 70 700 Å region. Almost all the energy levels of the 4d95s, 4d95p, 4d94f, 4d95d and 4d95f configurations in Pr XIV and Nd XV as well as the energies of the 4d96s levels in Pr XIV have been determined experimentally. One hundred seven spectral lines belonging to the 5s-5p, 5p-5d, 5d-5f, 4f-5d and 5p-6s transitions in Pr XIV and eighty five lines belonging to the 5s-5p, 5p-5d, 5d-5f and 4f-5d transitions in Nd XV have been classified for the first time. The present analysis is based on an accurate extrapolation of energy parameters in the Pd I isoelectronic sequence. The experimental level energies are described by Generalized Least Squares isoelectronic studies of 4d95l configurations.