Deperturbation of the N2+ first negative group B2Σu+-X2Σg+

UV Laser Spectroscopy Using the Velocity-Modulation Technique: New Hot Bands of the B2Σ+u–X2Σ+g System of N+2

“…These new identifications complete the previous analysis done by Gottscho et al in the visible range (13) for the (3, 5) band and by Klynning and Pagès (15) for the (3,5), (3,6), (7,9), (7,10), and (7,11) bands. In the case of the (5, 3) band, no extra -line was observed and we could not confirm, in the UV range, the presence of the only extra -line reported in the visible by (13). In the case of the (2, 0), (4, 2), (6,4) and (8,6) bands, the extra -lines are expected to be observed at N Ͼ 35, higher than the value reached on our spectra.…”

“…(29,12,12,11,12,12,30), respectively]. A standard 2 ⌸-2 ⌺ Hamiltonian was employed to describe the interactions between the rovibrational levels of both the B 2 ⌺ u ϩ and A 2 ⌸ u states (13,31,6). The following coupling elements, arising from the spin-orbit and rotational parts of the Hamiltonian, have been considered, in a Hund's case (a) basis.…”

“…The rotational analysis was performed by taking advantage of the results obtained in the visible range (13)(14)(15). In particular we have rebuilt all the structure of the ultraviolet bands by using the spectral terms of the electronic ground state calculated with the Dunham coefficients derived by Harada et al (27).…”

“…The most complete and comprehensive study of the First Negative band system of N 2 ϩ was performed by Gottscho et al (13). Twelve bands, observed in the visible from 380.0 to 475.0 nm (14) and including v B ϭ 0 -6 and v X ϭ 0 -8, were reanalyzed.…”

Fine and Hyperfine Structure in14N+2: TheB2Σ+u–X2Σ+g(0, 0) Band

“…The B 2 ⌺ u ϩ state is mixed with the A 2 ⌸ u state by the spin-orbit interaction and parts of the rotational Hamiltonian. In treating the mixing of the vЉ ϭ 0 level of the B state with the A state, we follow Gottscho et al (11) and include in the Hamiltonian matrix the vibrational levels vЉ ϭ 9, 10, 11 of the A state. The Hamiltonian that is diagonalized to obtain the B state energy levels excludes the hyperfine Note.…”