Branching fractions and oscillator strengths for Fe II transitions from the 3d(6)((5)d)4p subconfiguration

被引：59

作者：

Bergeson, SD ^{[1
]}

Mullman, KL ^{[1
]}

Wickliffe, ME ^{[1
]}

Lawler, JE ^{[1
]}

Litzen, U ^{[1
]}

Johansson, S ^{[1
]}

机构：

[1] LUND UNIV,DEPT PHYS,S-22362 LUND,SWEDEN

来源：

ASTROPHYSICAL JOURNAL | 1996年 / 464卷 / 02期

关键词：

atomic data; ISM; abundances; ultraviolet; general;

D O I：

10.1086/177391

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

New experimental branching fractions and transition probabilities are reported for 56 transitions in Fe II. The branching fractions are measured with a Fourier transform spectrometer and also with a high-resolution grating spectrometer on an optically thin hollow cathode discharge. Highly accurate experimental radiative lifetimes from the recent Literature provide the normalization required to convert our branching fractions into absolute transition probabilities. Results are compared with experimental and theoretical values in the literature. Our new transition probabilities will establish the absolute scale for relative absorption oscillator strengths of vacuum ultraviolet lines measured using a new high-sensitivity absorption experiment at the University of Wisconsin.

引用

页码：1044 / 1049

页数：6

共 24 条

[1] OSCILLATOR-STRENGTHS FOR FE-II TRANSITIONS AT 224.918 AND 226.008 NANOMETERS [J].