Excited states of gaseous ions. Transitions to and predissociation of the C2Σ+u state of n+2

✍ Scribed by J.C. Lorquet; M. Desouter

• Publisher: Elsevier Science
• Year: 1972
• Tongue: English
• Weight: 470 KB
• Volume: 16
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(72)80475-5

✦ Synopsis

ii configuration interaction study of different electronic states of IQ; has been perkmned. The position in cncrsy and the refati;e $rtensity of the photoe!ectron bands of the "Zi 4 states has been calculated and cumpared ivith espariment. The C-X:, state is predissoc~te~ by a U, state, as previously suppo.sed. However, owins to the attractive nature of the '%'I,, state a ciuuble crossinp occurs. Several predissociation mechanisms of the C state can therefore take place; thcP Efctimcs have ken calm&ted.

Our interest in the excited states of the 8; ion de& with two specific problems concerning the C2c~ state: the activity of this state in the photoelectron spectrum and its predissociatiun properties. We shall consider these two Points successively. 2. ne photoeLectron spectru.m Edqvist et al. have stated [l] that the C2Z: state of% was undetectable in photoelectron spectroscopy. A similar statement was also made by Potts [2]. This situation may be understood since the predominant electronic configurarion of the electronic structure of the C state is: r$ c%; . ..@Q (3tTy)t &r$ ('Q 111 and differs then from that of the ground state of the neutrai nrolecufe by two ntolecuIar orbit&, N2 XlSi . ..~?ouj2(3~~)~(ll.,)'~ . ('-1 On the other tiand, the 5 state of NG q_ 52c:...(=*~)l(j"gjl?(i,u)?! (3) 136 .' '.

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