Excitation cross-sections of the praseodymium atom

Abstract

Excitation cross-section of PrI were measured at an electron energy 30 eV for 82 specral lines. We have used the method of extended crossing beams with detection of the optical signal. For half of the total number the energy dependences were measured in the electron energy range of 0...200 eV. The largest measured excitation cross-sections reach (5-8) ×10-16 cm2. A classification is suggested for 18 previously unclassified lines

Excitation of Lanthanum and Lutetium Double-Charged Ions in Electron-Atom Collisions

“…Main features of the method of extended crossing beams and its specific implementation have been repeatedly discussed (Kuchenev, Samsonova, & Smirnov, 1990;Smirnov, 1994;Kuchenev, & Smirnov, 1994). It's unnecessary to repeat this information here.…”

Dissociative excitation of selenium atoms in collisions of electrons with Se2 molecules

“…The method of extended intersecting beams, which serves as the experimental basis of this study, was repeatedly discussed previously [23,24]. However, in its standard version, this method fails to narrow the fractional composition of molecular beam.…”

“…For this purpose, changes were made in the original scheme of formation of intersecting beams [24]. The new scheme is illustrated in Fig.…”

Excitation of PtI Transitions Terminating on Singlet Levels

“…The basic principles and capabilities of the method of extended crossing beams were described in [8], and the technical realization of the experimental facility and the measurement procedure were discussed in detail in [9,10].…”

“…In determining the absolute values of cross sections, the error is ±18 to ±33%. The results of detailed analysis of sources of errors in investigations involving extended beams, as well as the discussion of the procedure of time relaxation of the scale of absolute values of cross sections, are given in [9,10].…”