Spectrum of doubly ionized niobium (Nb III)

被引：8

作者：

Gayazov, RR ^{[1
]}

Ryabtsev, AN ^{[1
]}

Churilov, SS ^{[1
]}

机构：

[1] Russian Acad Sci, Inst Spect, Troitsk 142092, Russia

来源：

PHYSICA SCRIPTA | 1998年 / 57卷 / 01期

关键词：

D O I：

10.1088/0031-8949/57/1/007

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The spectrum of doubly ionized Nb is recorded in the region 900-2512 Angstrom with the aid of a 6.65-m vacuum ultraviolet normal incidence spectrograph. The (4d(2)5s + 4d5s(2))-4d5s5p and 4d(2)5p(4d(2)5d + 4d(2)6s) transitions are identified and energy levels of the 4d5s(2), 4d(2)5d, 4d(2)6s and 4d5s5p configurations are established. The wavelengths of previously investigated transitions 4d(3)-4d(2)5p and 4d(2)5s-4d(2)5p are improved and their analysis is extended. The list of identified Nb III transitions now contains 908 lines. All levels are now known in the 4d(3), 4d(2)5p, 4d(2)5s and 4d5s5p configurations except the 4d(2)5s(S-1)S-2 level. 72 out of possible 83 levels of the interacting (4d(2)6s + 4d(2)5d) configurations are located.

引用

页码：45 / 65

页数：21

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