Etats de valence de NS dans le domaine 2250–3800 Å

Abstract

Five red-degraded transitions, A2Δ–X2Π, G2Σ−–X2Π, H2Π–X2Π, I2Σ+–X2Π, and B2Π–X2Π of 14N32S, have been observed in the region 2250–3800 Å. The complete rotational analysis of these transitions leads to a coherent attribution of the electronic transitions and reveals many perturbations in the rotational structures. All the levels of the A2Δ state are perturbed and the perturbing state is presumably a [Formula: see text] state.The most important results are given in the tables of molecular constants. An energy level diagram and potential curves show the relative positions of the different observed states.

Resonance-enhanced multiphoton ionization spectroscopy on the B′2Σ+ and B2Π states of NS

“…As the (12, 0) band of B 2 Π 1/2 -X 2 Π 1/2 and (9, 0) band of B 2 Π 3/2 -X 2 Π 3/2 were perturbed strongly and overlapped the other vibronic bands, and rotational analysis could not be carried out on them. The simulated spectroscopic constants are listed in Table 3, which are consistent with Jenouvrier's work [5] .…”

“…The first spectroscopic detection of the NS radical in laboratory was made in 1932 by Fowler and Bakker [1] , who observed two bands of A-X and C-X systems between 2300 and 2700 Å in emission. Later, studies on NS have been carried out in succession by experiment [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18] and theory [19][20][21][22] . Especially in the work by Jenouvrier and his co-workers [5][6][7] , a thorough emission spectroscopic study was performed in the range of 1750-5650 Å.…”

Semidiffuse states of diatomic molecules: Configuration interaction studies of the lowest 2Σ+ and 2Δ states of NS, SiF, and CCl

“…state has been established by Vervloet and Jenouvrier [ 113 to be the lowest member of the ns Rydberg series. The next higher '2' state is the I state to which the valence configuration 7 u + 37r has been assigned [12]. Chiu and Silvers [13] reported a weak predissociation of the v' = 0, 1, and 2 levels in the C '2' state which they attributed to a crossing and possibly perturbation of the C state by the I '2' and H 'II states.…”

“…Chiu and Silvers [13] reported a weak predissociation of the v' = 0, 1, and 2 levels in the C '2' state which they attributed to a crossing and possibly perturbation of the C state by the I '2' and H 'II states. The A 'A state, appearing as the upper state of the p(A -X) system of NS, is the lowest state of its symmetry and originates from the same valence configuration as the I '2+ state [12].…”