Measurement of hyperfine structure and isotope shifts in Gd II

被引：1

作者：

Del Papa, Dylan F. ^{[1
]}

Rose, Christopher D. M. ^{[1
]}

Rosner, S. David ^{[1
]}

Holt, Richard A. ^{[1
]}

机构：

[1] Univ Western Ontario, Dept Phys & Astron, London, ON N6A 3K7, Canada

来源：

JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER | 2017年 / 196卷

基金：

加拿大自然科学与工程研究理事会;

关键词：

Laser spectroscopy; Gd II; Hyperfine structure; Isotope shifts; SINGLY IONIZED GADOLINIUM; NEUTRON-CAPTURE ELEMENTS; R-PROCESS; TRANSITION-PROBABILITIES; RADIATIVE LIFETIMES; LASER SPECTROSCOPY; DRIVEN WINDS; EARLY GALAXY; STARS; NUCLEOSYNTHESIS;

D O I：

10.1016/j.jqsrt.2017.04.021

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We have applied fast-ion-beam laser-fluorescence spectroscopy to measure the isotope shifts of 73 optical transitions in the wavelength range 421.5-455.8 nm and the hyperfine structures of 35 even parity and 33 odd parity levels in Gd II. Many of the isotope shifts and hyperfine structure measurements are the first for these transitions and levels. These atomic data can be used to correct for saturation and blending in the analysis of stellar spectra to determine chemical abundances. As a result, they have an important impact on studies of the history of nucleosynthesis in the Universe and on the use of photospheric abundance anomalies in Chemically Peculiar stars to infer indirect information about stellar interiors. (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：246 / 253

页数：8

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