Absolute photoionization cross section for C+

被引：0

作者：

Folkmann, F ^{[1
]}

Hansen, JE ^{[1
]}

Kjeldsen, H ^{[1
]}

Knudsen, H ^{[1
]}

Rasmussen, MS ^{[1
]}

West, JB ^{[1
]}

Andersen, T ^{[1
]}

机构：

[1] Aarhus Univ, Inst Phys & Astron, DK-8000 Aarhus C, Denmark

来源：

PHYSICS OF ELECTRONIC AND ATOMIC COLLISIONS | 2000年 / 500卷

关键词：

D O I：

暂无

中图分类号：

O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];

学科分类号：

070203 ; 070304 ; 081704 ; 1406 ;

摘要：

The absolute photoionization cross section for the astrophysically important C+ ion has been measured for the first time thus allowing a test of the predicted cross section from the Opacity Project. The measurements are performed with a new ion - photon merged beam setup at the ASTRID storage ring utilizing an undulator beam line. In addition to the predicted 2s2p(P-3) np D-2 and S-2 autoionizing resonances, the P-2 states which are not included in the theoretical predictions also contribute significantly to the ionization yield below the 2s2p(3P) limit. The cross section is determined with a precision of 10% and lies 5-25% below the theoretical prediction at 24-37 eV.

引用

页码：218 / 222

页数：5

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