Radiative lifetimes and ultraviolet branching fractions for resonance lines of Co II

被引：17

作者：

Mullman, KL ^{[1
]}

Cooper, JC ^{[1
]}

Lawler, JE ^{[1
]}

机构：

[1] Univ Wisconsin, Dept Phys, Madison, WI 53706 USA

来源：

ASTROPHYSICAL JOURNAL | 1998年 / 495卷 / 01期

关键词：

atomic data; ISM; abundances; atoms; methods; laboratory; ultraviolet; general;

D O I：

10.1086/305282

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Radiative lifetime measurements are combined with experimental branching fraction measurements to give 28 absolute oscillator strengths for ultraviolet lines of Co II. The radiative lifetimes are determined by laser-induced fluorescence measurements, and the branching fractions are measured using a high-resolution grating spectrometer and an optically thin hollow cathode discharge. The oscillator strengths establish the absolute scale for relative absorption oscillator strength measurements made with the high-sensitivity absorption spectroscopy experiment at the University of Wisconsin.

引用

页码：503 / 507

页数：5

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