Abstract

Laser-induced fluorescence (LIF) measurements are made on the <i>C</i><sup>2</sup>Σ<sup>+</sup>-<i>X</i><sup>2</sup>Π<sub>r</sub> (λ = 314 nm) transition of CD, which is produced by a microwave-excited Ar/CD<sub>4</sub> process plasma. The experiment is realized by using a frequency-doubled cw ring dye laser as the tunable light source. Due to the small bandwidth (≈3 MHz) of the exciting UV laser, the exact line positions of spin-doubled rotational lines in the <i>P</i>-branch (<i>N</i>″ = 2 to 5 and <i>N</i>″ = 8 to 13) of the first vibrational band (<i>v′ = v″</i> = 0) could be determined. The resolution is limited only by Doppler broadening, which amounts in our plasma (<i>T</i> = 450 K) to about 4 GHz. With these new values of line positions, a modified spin-splitting constant of γ = 0.051 ± 0.006 cm<sup>−1</sup> is calculated.

PDF Article

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription