Measurement of emission cross sections for n=3→2 lines in Li-like Fe23+

被引：29

作者：

Chen, H

Beiersdorfer, P

Scofield, JH

Gendreau, KC

Boyce, KR

Brown, GV

Kelley, RL

Porter, FS

Stahle, CK

Szymkowiak, AE

Kahn, SM

机构：

[1] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA

[2] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA

[3] Columbia Univ, Columbia Astrophys Lab, New York, NY 10027 USA

来源：

ASTROPHYSICAL JOURNAL | 2002年 / 567卷 / 02期

关键词：

atomic data; atomic processes; methods : laboratory; X-rays : general;

D O I：

10.1086/340007

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report measurements of emission cross sections for iron L-shell 3-->2 lines in Fe23+ performed on the electron beam ion trap EBIT-II using a combination of a crystal spectrometer and the spare 6x6 element X-Ray Spectrometer microcalorimeter from the Astro-E X-ray satellite mission. Use of the microcalorimeter enables for first time the normalization of line emission cross sections, i.e., effective electron impact excitation cross sections that include radiative cascades, to the well-established cross section of radiative electron capture, thus allowing the normalization of relative line intensity measurements using crystal spectrometers.

引用

页码：L169 / L172

页数：4

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