Accurate lifetimes and absolute transition rates for ultraviolet transitions from 3d5(4G) 4p and 3d5(4P) 4p levels in MN II

被引：26

作者：

Kling, R ^{[1
]}

Schnabel, R

Griesmann, U

机构：

[1] Natl Inst Stand & Technol, Gaithersburg, MD 20899 USA

[2] Univ Hannover, Inst Atom & Mol Phys, Abt Plasmaphys, D-30167 Hannover, Germany

[3] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA

来源：

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES | 2001年 / 134卷 / 01期

关键词：

atomic data; methods : laboratory; ultraviolet : general;

D O I：

10.1086/320366

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A recently developed, laser-induced fluorescence technique was used to measure the lifetimes of 14 3d(5)((4)G)4p and 3d(5)(P-4)4p levels in the Mn+ ion. Branching fractions for electric dipole transitions from these levels were measured with a vacuum ultraviolet Fourier transform spectrometer, using a hollow-cathode lamp and a Penning discharge source. Based on these new measurements, absolute electric dipole transition rates for about 170 spectral lines in the ultraviolet and vacuum ultraviolet were determined. The uncertainty of the transition rates is less than 5% for the strong transitions.

引用

页码：173 / 178

页数：6

共 20 条

[1] HIGH-CURRENT HOLLOW-CATHODE AS A RADIOMETRIC TRANSFER STANDARD SOURCE FOR THE EXTREME VACUUM ULTRAVIOLET [J].