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On the mechanism of the electron-impact excitation of 4d 95s 2 2 D 5/2, 3/2 upper laser levels in cadmium ions

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Abstract

The energy dependence of the effective cross sections for the electron-impact excitation of 4d 95s 2 2 D 5/2, 3/2 − 4d 105p 2 P 2, 3/2/01 laser transitions in cadmium ions was studied by a high-precision spectroscopic technique using crossed electron and ion beams. The absolute effective cross sections for the laser line excitation at λ=441.6 and 325.0 nm have the peak values 2.5× 10−16 and 1.3×10−16 cm2, respectively. It is shown that population of the 4d 95s 2 2 D 5/2, 3/2 upper laser levels by the electron impact on cadmium ions in the 4d 105s 2 S 1/2 ground state takes place predominantly due to the resonance processes; that is, it proceeds via atomic and ionic autoionization states.

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Authors and Affiliations

  1. Institute of Electron Physics, National Academy of Sciences of Ukraine, Uzhgorod, Ukraine

    A. N. Gomonai & A. I. Imre

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  1. A. N. Gomonai
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  2. A. I. Imre
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Translated from Pis’ma v Zhurnal Tekhnichesko\(j_k \sim 1/\sqrt[4]{\tau }\) Fiziki, Vol. 27, No. 18, 2001, pp. 89–94.

Original Russian Text Copyright © 2001 by Gomonai, Imre.

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Gomonai, A.N., Imre, A.I. On the mechanism of the electron-impact excitation of 4d 95s 2 2 D 5/2, 3/2 upper laser levels in cadmium ions. Tech. Phys. Lett. 27, 798–800 (2001). https://doi.org/10.1134/1.1407364

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  • DOI: https://doi.org/10.1134/1.1407364

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