Excitation by Electron Impact of Quintet and Septet Levels of Gadolinium Atom Belonging to 4f85d6s Configuration

Yuriy Mikhailovich Smirnov

doi:10.15866/irephy.v10i1.8890

Excitation by Electron Impact of Quintet and Septet Levels of Gadolinium Atom Belonging to 4f85d6s Configuration

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Abstract

Inelastic collisions of electrons with gadolinium atoms are studied using the method of extended crossing beams with recording of optical signal emitted by excited atoms. Sixty-one excitation cross-sections of quintet and septet levels belonging to the 4f85d6s configuration have been measured at incident electron energy of 30 eV. Five optical excitation functions have been recorded in the electron energy range between the excitation threshold and 200 eV. The excitation process occurs as a result of a forbidden transition 6s → 4f.
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Keywords

Gadolinium Atom; Excitation Cross-Section; Optical Excitation Function; Spectral Line; Energy Level

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