MEASUREMENT OF THE RADIATIVE DECAY RATE OF THE METASTABLE (2s22p3/253s1/2)(J=2) LEVEL IN Fe XVII

被引：13

作者：

Lopez-Urrutia, J. R. Crespo ^{[1
]}

Beiersdorfer, P. ^{[1
]}

机构：

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

来源：

ASTROPHYSICAL JOURNAL | 2010年 / 721卷 / 01期

关键词：

atomic data; atomic processes; line: formation; X-rays: general; SPECTRAL-LINE INTENSITIES; BEAM ION-TRAP; 1S2S S-3(1) LEVEL; X-RAY; ATOMIC DATA; LABORATORY MEASUREMENTS; LIFETIME MEASUREMENTS; EMISSION; SOLAR; NEON;

D O I：

10.1088/0004-637X/721/1/576

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The radiative decay rate of the (2s(2)2p(3/2)(5)3s(1/2))(J=2) -> (2s(2)2p(6))(J=0) transition was measured in Ne-like Fe XVII. This transition forms the prominent magnetic quadrupole line, dubbed M2 or 3H, in the Fe XVII spectrum at 17.10 angstrom. Different theoretical models predict radiative rates for this transition that diverge by almost a factor of 2, making intensity predictions for this line uncertain in environments where it is affected by de-excitation due to either electron-impact collisions or photoionization. Our result of (2.04(-0.09)(+0.03)) x 10(5) s(-1) is very close to the value of 2.06 x 10(5) s(-1) predicted by the Flexible Atomic Code.

引用

页码：576 / 581

页数：6

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