T. Imajo et al., High-resolution Fourier transform emission spectroscopy of the B-2 Sigma(+) (upsilon=0)-X-2 Sigma(+) (upsilon=0) transition of the PN+ ion, J MOL SPECT, 204(1), 2000, pp. 21-25
Ultraviolet emission spectrum of the B(2)Sigma (+) (v = 0)-X(2)Sigma (+) (v
= 0) transition of the PN+ ion has been observed at a resolution of 0.05 c
m(-1) by a Fourier transform spectrometer. The rotational analysis led to a
great improvement of rotational constants in the B(2)Sigma (+) (v = 0) and
X(2)Sigma (+) (v = 0) states as well as to the first determination of cent
rifugal distortion constants For both levels and spin-rotation interaction
constant in the X(2)Sigma (+) (v = 0) state. Rotational perturbation in the
B(2)Sigma (+) (v = 0) State was observed. (C) 2000 Academic Press.