High-Resolution Optogalvanic Spectrum of N+2 Using a Ti:Sapphire Laser: The (2,0) Vibration Band of the Meinel System A2Πu-X2Σ+g

The A2Πu state of : Electric properties, fine and hyperfine coupling constants, and magnetic moments (g-factors). A theoretical study

“…Particularly worrisome was the spurious minimum assigned to both p 1 (3.24 vs. 4.87 Â 10 À3 cm À1 ) and q 1 (À0.234 vs. À0.326 Â 10 À3 cm À1 ). Our calculated p and q data reproduce the most recent experimental data [58][59][60] within 13%, or better. Note that the measured p v 's increase smoothly with v 00 (A), whereas ours weakly decrease.…”

“…Three experimental studies [58][59][60] found the {p m , q m , m = 0, 1} values reported for A(N 2 þ ) in [38] to be too small (Table 6). Particularly worrisome was the spurious minimum assigned to both p 1 (3.24 vs. 4.87 Â 10 À3 cm À1 ) and q 1 (À0.234 vs. À0.326 Â 10 À3 cm À1 ).…”

A Combined Analysis of Laser Optogalvanic and Fourier Transform Emission Spectra of NH2near its Barrier to Linearity

“…Details of this experimental setup, shown in Fig. 1, are given elsewhere (16). The single mode output laser power was about 2 W. On-off modulation of the laser beam was performed at 2 kHz by using a mechanical chopper.…”

The Rotational Structure of the (7, 4) and (7, 2) Bands of the A2Πu–X2Σg+ System of N2+ Studied by Velocity Modulation Laser Spectroscopy

“…The observed (2, 0) band (13) was not included in this analysis. The observed band with band origin at about 17 248 cm −1 was readily identified as the (7, 2) band with the calculated term value T v v from Ferguson et al (14).…”

“…The (8, 3), (7,3), and (6, 3) bands have been analyzed by Lindgren et al (2), Radunsky and Saykally (3), and Bachir et al (4), respectively. The (6, 1), (13,6) (5), (12,6) (6), (15,8) (7), (9,4), (11,5) (8), (2, 0), (3, 1), (4, 2), (7,4), and (8, 5) (9) bands have also been studied by many spectroscopists. This note reports an experimental investigation on the (7, 4) and (7, 2) bands of the A 2 u -X 2 + g system of N + 2 and the rotational analysis of the observed absorption spectra of these two bands.…”