Knowledge Bank

Ground state xenon fluoride at a rotational temperature at $\sim 5\circ K$ is prepared in a continuous supersonic expansion of a mixture of xenon, fluorine, and helium through a nickel nozzle heated to $610\circ$ C. Laser excitation spectra are generated by crossing the beam with a frequency-doubled, nitrogen laser-pumped tunable dye laser that has a bandwidth of about 1 GHz in the ultraviolet. Fourteen cold bands $(v\prime =8,9,11-22)$ and eighteen hot bands $(v\prime \prime =1,v\prime =9,12-22;v\prime =2,;v\prime \prime =19-23;v\prime \prime =3,v\prime \prime =21)$ have been observed; each vibrational band is comprised of seven isotopic bands. Our study extends analysis of the XeF $B~(\Omega =1/2)\leftarrow X~\mathrm{<mrow\; data-mjx-texclass="ORD">2</mrow>}\Sigma +6$ to higher $v\prime$ levels than have previously been reported. Ground and excited state rotational and also vibrational parameters have been obtained. Our results are compared with those of recent studies of this