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Current issue   Ukr. J. Phys. 2014, Vol. 59, N 5, p.473-478

    Paper

Gomonai А.N., Hutych Yu.I., Gomonai A.I.

Institute of Electron Physics, Nat. Acad. of Sci. of Ukraine
(21, Universytets’ka Str., Uzhgorod 88017, Ukraine; e-mail: annagomonai@rambler.ru)

Absolute Cross-Sections of s- and d-ionizations of In+ Ions at Their Collisions with Slow Electrons

Section: Atoms and molecules
Original Author's Text: Ukrainian

Abstract: Effective cross-sections of s- and d-ionization of In+ ions by electron impact have been studied using a spectroscopic technique, when the ion and slow-electron beams cross each other at the right angle. A method of determination of the partial cross-sections for the ion ionization by electron impact is described. The absolute values of s- and d-ionization cross-sections for In+ ions were found to equal 2.1 ×10-17 and 5.2 ×10-17 cm2 , respectively. The results obtained testify to the important role of the excitation-autoionization process that makes a substantial contribution to the electron-impact ionization cross-section of ions.

Key words: indium, electron-ion collisions, ionization with excitation, partial cross-sections of ionization, excitation-autoionization.