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The Spectrum of Singly Ionized Phosphorus, P II

1983; IOP Publishing; Volume: 27; Issue: 5 Linguagem: Inglês

10.1088/0031-8949/27/5/005

1402-4896

Nils Svendenius, Carl Erik Magnusson, Per Olof Zetterberg,

Atomic and Molecular Physics

New observations in the P II spectrum have been made in the wavelength region 500-12 000 Å. The spectrum was excited in two different ways, using a high-frequency lamp and a sliding spark in vacuum. The term system now includes 159 levels and about 900 identified lines, which means a doubling of the number of levels and identified transitions. The energy of the lowest limit, 3s2 3p2P, is derived from ng-series, which are all new. A linear Ritz formula gives the value 160 010.6 cm-1 for the 2P3/2 component of the limit, and the ground term splitting 559.14 cm-1 in P III then gives 159 451.5 cm-1 for the 2P1/2 limit level.