Electron-impact excitation of heliumlike titanium

Journal Article · Sun Oct 01 00:00:00 EDT 1995 · Physical Review A

DOI:https://doi.org/10.1103/PhysRevA.52.3366· OSTI ID:118464

Zhang, H L; Pradhan, A K ^[1]

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1. Department of Astronomy, Ohio State University, Columbus, Ohio 43210 (United States)

We report theoretical close-coupling calculations for electron-impact excitation cross sections of He-like Ti XXI ions using the {ital R}-matrix method, including relativistic and radiation damping effects. The cross sections are in good agreement with experimental measurements from the electron-beam ion trap [Chantrenne {ital et} {ital al}., Phys. Rev. Lett. {bold 69}, 265 (1992)] for the four prominent x-ray transitions: 1{ital s}{sup 2}({sup 1}{ital S}{sub 0}){r_arrow}1{ital s}2{ital s}({sup 3}{ital S}{sub 1}), 1{ital s}2{ital p}({sup 3}{ital P}{sub 1,2}{sup {ital o}}), 1{ital s}2{ital p}({sup 1}{ital P}{sup {ital o}}{sub 1}), indicating that both the relativistic and the resonance effects, with radiative damping, may affect the electron-impact excitation process significantly in highly charged ions.

• OSTI ID: 118464
• Journal Information: Physical Review A, Journal Name: Physical Review A Journal Issue: 4 Vol. 52; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

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