X-ray absorption via K-alpha resonance complexes in oxygen ions

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dc.creatorPradhan, Anil K.
dc.creatorChen, Guo Xin
dc.creatorDelahaye, Franck
dc.creatorNahar, Sultana N.
dc.creatorOelgoetz, Justin
dc.date2003-02-12
dc.date.accessioned2026-07-07T10:47:35Z
dc.date.available2026-07-07T10:47:35Z
dc.descriptionThe K-alpha resonance complexes in oxygen ions O I - O VI are theoretically computed and resonance oscillator strengths and wavelengths are presented. The highly resolved photoionization cross sections, with relativistic fine structure, are computed in the coupled channel approximation using the Breit-Pauli R-matrix method. A number of strong K-alpha resonances are found to be appreciable, with resonance oscillator strengths f_r > 0.1. The K-alpha resonance wavelengths of O I-O VI lie in a relatively narrow wavelength range 22 - 23.5 A, and the X-ray opacity in this region should therefore be significantly affected by K --> L transitions in oxygen. The results should be useful in the interpretation of soft X-ray spectra observed from Chandra and XMM-Newton.
dc.descriptionMonthly Notices of Roy. Astro. Soc. (in press), 10 pgs. 1 figure
dc.identifierhttps://arxiv.org/abs/astro-ph/0302238
dc.identifierhttp://arxiv.org/abs/astro-ph/0302238
dc.identifierMon.Not.Roy.Astron.Soc.341:1268-1271,2003
dc.identifierdoi:10.1046/j.1365-8711.2003.06513.x
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/183583
dc.subjectAstrophysics
dc.subjectAtomic Physics
dc.titleX-ray absorption via K-alpha resonance complexes in oxygen ions
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