Absolute cross section for photoionization of CO+ leading to longlived metastable CO2+

被引：21

作者：

Andersen, T ^{[1
]}

Kjeldsen, H ^{[1
]}

Knudsen, H ^{[1
]}

Folkmann, F ^{[1
]}

机构：

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

来源：

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS | 2001年 / 34卷 / 10期

关键词：

D O I：

10.1088/0953-4075/34/10/103

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The absolute cross section for photoionization of CO+ ions leading to formation of longlived metastable CO2+ ions has been measured from the threshold at 27.3 eV to 50 eV utilizing a merged ion-photon beam set-up with synchrotron radiation from an undulator. The continuum cross section reaches a value of 2.5(4) Mb near threshold and decreases slowly with increasing photon energy. Superimposed on this continuum discrete structures are observed, which can be assigned to CO+(4 sigma5 sigma (3)Sigma (+)(nu = 0))nl lambda Rydberg series with n greater than or equal to 5.

引用

页码：L327 / L332

页数：6

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