THE SPECTRUM OF DOUBLY IONIZED PRASEODYMIUM.
Abstract
The spectrum of Pr(2+) (PrIII) produced by a low-energy spark discharge in helium was observed from 2025 A to 10716 A. The resulting line-list contains about 4,000 entries, some 1600 of which have been classified in an energy level scheme consisting of 118 odd and 130 even levels. Almost all the expected levels of the 4f3, 4f(2)5d, 4f(2)6p configurations have been located, as well as some levels of the 4f5d2 and 4f(2)6d groups. The ground state of the ion was found to be the 4I9/2 level of the 4f3 configuration. The structure of the 4f(2)6s and 4f(2)6p groups indicate well developed J1j-coupling, while the remaining configurations were interpreted in terms of LS-coupling. An ionization potential of 23.2 volts was obtained from levels of the two member 4f2nd series. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1961
- Accession Number
- AD0609418
Entities
People
- J. Sugar
Organizations
- Johns Hopkins University