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

Authors
Andersen, T Kjeldsen, H Knudsen, H Folkmann, F
Citation
T. Andersen et al., Absolute cross section for photoionization of CO+ leading to longlived metastable CO2+, J PHYS B, 34(10), 2001, pp. L327-L332
Citations number
23
Categorie Soggetti
Physics
Journal title
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS
ISSN journal
09534075 → ACNP
Volume
34
Issue
10
Year of publication
2001
Pages
L327 - L332
Database
ISI
SICI code
0953-4075(20010528)34:10<L327:ACSFPO>2.0.ZU;2-#
Abstract
The absolute cross section for photoionization of CO+ ions leading to forma tion 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 synchro tron radiation from an undulator. The continuum cross section reaches a val ue of 2.5(4) Mb near threshold and decreases slowly with increasing photon energy. Superimposed on this continuum discrete structures are observed, wh ich can be assigned to CO+(4 sigma5 sigma (3)Sigma (+)(nu = 0))nl lambda Ry dberg series with n greater than or equal to 5.