F. Hummernbrum et al., LIF MEASUREMENTS ON THE C(2)SIGMA(-X(2)PI(R) TRANSITIONS OF THE CD RADICAL()), Applied spectroscopy, 47(11), 1993, pp. 1772-1774
Laser-induced fluorescence (LIF) measurements are made on the C2SIGMA-X2PI(r) (lambda = 314 nm) transition of CD, which is produced by a mi
crowave-excited Ar/CD4 process plasma. The experiment is realized by u
sing a frequency-doubled cw ring dye laser as the tunable light source
. Due to the small bandwidth (almost-equal-to 3 MHz) of the exciting U
V laser, the exact line positions of spin-doubled rotational lines in
the P-branch (N'' = 2 to 5 and N'' = 8 to 13) of the first vibrational
band (nu' = nu'' = 0) could be determined. The resolution is limited
only by Doppler broadening, which amounts in our plasma (T = 450 K) to
about 4 GHz. With these new values of line positions, a modified spin
-splitting constant of gamma = 0.051 +/- 0.006 cm-1 is calculated.