Die Anregungsfunktion für Elektronenstoß des Ca-41 P°-Terms

Heyner, W.; Karstensen, F.

doi:10.1007/bf01392433

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1995

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“…Nevertheless, so far the electron-impact excitation of the calcium atom has been investigated only in three works. In Refs [1,21, OEF of the CaI resonance lines were studied, and in Ref. [3] a more detailed research was undertaken and resulted in measurements of 43 line emission cross-sections of CaI and 4 of Ca 11.…”

Section: Introductionmentioning

confidence: 99%

Cross-Sections for electron-impact excitation of Ca I and Ca II

Kuchenev

Smirnov

1995

Phys. Scr.

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143 line emission cross-sections of Ca I and 15 line emission cross-sections of Ca II have been measured at an electron energy of 30eV. The optical excitation functions (OEF) are recorded in a range of electron energy from 0 to 200eV: 59 OEF for Ca I and 5 OEF for Ca II. The investigated lines are located in a spectrum region 227-745 nm. For the cross-sections of 5 singlet series and 10 triplet ones of Ca I, consideration has been given to series relationships that are characterized by the power relationship between the cross-section value and the principal quantum number of the upper level. Deviations from the power relationship take place in the perturbed Ca I series. The perturbations manifest themselves also by changing the OEF shape.

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Section: Introductionmentioning

confidence: 99%