Production of electronically excited N+2 ions by electron impact on N2 molecules
Abstract
Measurements of the optical emission cross sections for the N+2 D2 Πg-->A 2Πu emission bands produced by electron impact on N2 are reported. From these optical data, estimates of the apparent cross sections for the electron-impact production of N+2 (D 2Πg) in the vibrational states v=4, 7, and 9 are obtained. Combining these data with similar cross sections for the 2Πu-->X 2Σ+g and 2Σ+u-->X 2Σ+g bands and with ionization cross sections of N2 enables us to analyze the systematics of the cross sections for producing N+2 in the X 2Σ+g, A 2Πu, 2Σ+u, and D 2Πg states. Two different kinds of excitation behaviors are found and are discussed in reference to the electronic structure of the N+2 ion.
- Publication:
-
Physical Review A
- Pub Date:
- February 1994
- DOI:
- 10.1103/PhysRevA.49.927
- Bibcode:
- 1994PhRvA..49..927F
- Keywords:
-
- 34.80.Gs;
- Molecular excitation and ionization by electron impact