@article {5050,
	title = {Fourier transform microwave spectroscopy of the (2)Sigma(+) ground states of YbX (X=F, Cl, Br): Characterization of hyperfine effects and determination of the molecular geometries},
	journal = {Journal of Chemical Physics},
	volume = {115},
	number = {15},
	year = {2001},
	note = {ISI Document Delivery No.: 478ZYTimes Cited: 17Cited Reference Count: 34},
	month = {Oct},
	pages = {6979-6989},
	type = {Article},
	abstract = {The pure rotational spectra of low lying v=0 and 1 vibrational levels of the (2)Sigma (+) ground states of several isotopomers of YbF, YbCl, and YbBr were recorded using a pulsed jet cavity Fourier transform microwave spectrometer. Through least squares fits, parameters describing rotational, fine, and hyperfine effects (such as Fermi-contact, dipole-dipole coupling, and nuclear spin-rotation coupling) are presented. Trends in this halide series show an increasing amount of unpaired spin-density on the halide nucleus with increasing halide atomic number, which is consistent with results obtained in previous studies of the calcium analogs. Effective equilibrium bond lengths for (YbF)-Yb-174 and (YbCl)-Yb-174-Cl-35 have been determined to be 2.016 514(1) Angstrom and 2.488 285(1) Angstrom, respectively. The spectra of the two major bromine isotopomers, (YbBr)-Yb-174-Br-79 and (YbBr)-Yb-174-Br-81, were studied only in the v=0 level, and the derived values of r(0) are 2.647 364 5(2) Angstrom and 2.647 347 6(2) Angstrom, respectively. The uncertainties in the equilibrium bond lengths of YbF and YbCl are discussed in terms of the measurement accuracies of the spectra and of the Born-Oppenheimer approximation. (C) 2001 American Institute of Physics.},
	keywords = {BEAM, CONSTANTS, laser spectroscopy, MONOBROMIDE, MONOFLUORIDE, PURE ROTATIONAL SPECTRUM, RF DOUBLE-RESONANCE, SPIN-ROTATION, TRANSITION, X(2)SIGMA(+) STATE},
	isbn = {0021-9606},
	url = {<Go to ISI>://000171380500024},
	author = {Dickinson, C. S. and Coxon, J. A. and Walker, N. R. and Gerry, M. C. L.}
}
@article {4867,
	title = {The pure rotational spectrum of ScBr},
	journal = {Physical Chemistry Chemical Physics},
	volume = {2},
	number = {1},
	year = {2000},
	note = {ISI Document Delivery No.: 267BBTimes Cited: 12Cited Reference Count: 29},
	pages = {43-46},
	type = {Article},
	abstract = {The pure rotational spectra of (ScBr)-Br-7 9 and (ScBr)-Br-8 1 have been measured in two vibrational states (upsilon = 0 and 1) in the 5-24 GHz spectral region, using a cavity pulsed jet Fourier transform microwave spectrometer. The samples were prepared by ablating Sc metal in the presence of Br-2 contained in the Ar backing gas of the jet. The equilibrium internuclear distance r(e) has been determined along with estimates for the harmonic vibration frequency omega(e) and the dissociation energy, D-e. Nuclear quadrupole coupling constants and spin-rotation constants have been determined for both Sc and Br. The ionic character of the ScBr bond is estimated to be similar to 95\%. Magnetic shieldings for both nuclei have been estimated.},
	keywords = {HYPERFINE, MOLECULAR-BEAM, MONOBROMIDE, RF DOUBLE-RESONANCE, SCANDIUM, SPECTROSCOPY, STATE, SYSTEM, YTTRIUM},
	isbn = {1463-9076},
	url = {<Go to ISI>://000084333800006},
	author = {Lin, W. and Evans, C. J. and Gerry, M. C. L.}
}
