@article {719,
	title = {Laser spectroscopy of VS: hyperfine and rotational structure of the C-4 Sigma(-)-X-4 Sigma(-) transition},
	journal = {Journal of Molecular Spectroscopy},
	volume = {220},
	number = {1},
	year = {2003},
	note = {ISI Document Delivery No.: 699VMTimes Cited: 11Cited Reference Count: 20},
	month = {Jul},
	pages = {87-106},
	type = {Article},
	abstract = {The (0,0) and (0, 1) bands of the C(4)Sigma(-)-X(4)Sigma(-) electronic transition of VS (near 809 and 846 nm, respectively) have been recorded at high resolution by laser-induced fluorescence, following the reaction of laser-ablated vanadium atoms with CS2 under supersonic free-jet conditions. A least squares fit to the resolved hyperfine components of the rotational lines gives the rotational constants and bond lengths as C(4)Sigma(-): B-o = 0.188898 +/- 0.000027 cm(-1), r(o) = 2.1315 Angstrom; X(4)Sigma(-): B-0 = 0.203684 +/- 0.000025 cm(-1), r(o) = 2.0526 Angstrom. The electron spin parameters for the two states show that there are some similarities between the states of VS and those of VO, but the hyperfine parameters show that the compositions of the partly filled molecular orbitals are by no means the same. The ground state Fermi contact parameter of VS, b (X(4)Sigma(-)), is only 58\% of that of the ground state of VO, which implies that the sigma orbital of the ground sigmadelta(2) electron configuration has less than 50\% vanadium 4s character. Similarly, the excited state Fermi contact parameter, b(C(4)Sigma(-)), is very much smaller than that of VO. No local rotational perturbations have been found in the C(4)Sigma(-) state of VS, though an internal hyperfine perturbation between the F-2 and F-3 electron components at low N confuses the hyperfine structure and induces some forbidden (DeltaJ = +/-2) rotational branches. (C) 2003 Elsevier Science (USA). All rights reserved.},
	keywords = {BAND, ELECTRONIC STATES, NBO, OXIDES, PERTURBATIONS, RESOLUTION, S-STARS, SPECTRA, SYSTEM, VO},
	isbn = {0022-2852},
	url = {<Go to ISI>://000184076700010},
	author = {Ran, Q. and Tam, W. S. and Cheung, A. S. C. and Merer, A. J.}
}
@article {419,
	title = {The E (3)Pi-X (3)Delta transition of jet-cooled TiO observed in absorption},
	journal = {Journal of Molecular Spectroscopy},
	volume = {212},
	number = {2},
	year = {2002},
	note = {ISI Document Delivery No.: 561KZTimes Cited: 7Cited Reference Count: 43},
	month = {Apr},
	pages = {133-141},
	type = {Article},
	abstract = {The (0,0) and (1,0) bands of the E(3)Pi-X (3)Delta transition of TiO in the near-infrared have been recorded by frequency modulated laser absorption spectroscopy in a laser ablation/free jet expansion source. The observed linewidths (FWHM) varied from 300 to 500 MHz according to the expansion conditions and are dominated by residual Doppler broadening in the unskimmed source. Data for the (0,0) band have been obtained for TiO molecules containing all the naturally occurring Ti isotopes but, for the weaker (1,0) band, only for (TiO)-Ti-48. Rotational constants for the two upper state vibrational levels were derived by fitting the data to an effective Hamiltonian; equilibrium parameters have been calculated. The experimental results are compared to the results of ab initio calculations on the E-X system. Ab initio results for the b-a system and for the lowest (3)Sigma(-) state are also presented. They indicate that the D (3)Sigma(-) state is not a very low-lying state. (C) 2002 Elsevier Science (USA).},
	keywords = {0, 0 BAND, DOUBLING PARAMETERS, electronic absorption spectroscopy, ELECTRONIC STATES, ENERGIES, FOURIER-TRANSFORM SPECTROSCOPY, laser spectroscopy, MOLECULES, RESOLUTION, ROTATIONAL ANALYSIS, TITANIUM MONOXIDE, titanium oxide, VO},
	isbn = {0022-2852},
	url = {<Go to ISI>://000176140900001},
	author = {Kobayashi, K. and Hall, G. E. and Muckerman, J. T. and Sears, T. J. and Merer, A. J.}
}
@article {2946,
	title = {HYPERFINE-STRUCTURE IN HIGH-SPIN MULTIPLICITY ELECTRONIC STATES - ANALYSIS OF THE B(4)PI-X(4)SIGMA(-) TRANSITION OF GASEOUS NBO},
	journal = {Journal of Chemical Physics},
	volume = {100},
	number = {9},
	year = {1994},
	note = {ISI Document Delivery No.: NH846Times Cited: 38Cited Reference Count: 57},
	month = {May},
	pages = {6240-6262},
	type = {Article},
	abstract = {The (0,0) band of the B (II)-I-4-X (4) Sigma(-) transition of NbO, near 6600 Angstrom, has been analyzed from spectra taken at sub-Doppler resolution. The transition is notable for the great width of its Nb nuclear hyperfine structure, which is caused principally by the unpaired 5s sigma electron in the ground state interacting with the large magnetic moment of the(41)(93) Nb nucleus (1=9/2). A fit to the ground-state combination differences, including four very precise microwave lines measured by Suenram et al. [J. Mol. Spectrosc. 148, 114 (1991)], has given a comprehensive set of rotational, spin, and hyperfine parameters. Prominent among these are the third-order spin-orbit distortions of the spin-rotation interaction and the Fermi contact interaction, which are large and well. determined, reflecting different degrees of spin-orbit contamination of the the (4) Sigma(1/2) and (4) Sigma(3/2) components of the ground state. The delta(2) pi B (II)-I-4 state was hard to fit, for a number of reasons. First, its spin-orbit structure is asymmetric, because of strong perturbations by a (II)-I-2 state which has been identified in this work, from among the various weak bands in the NbO spectrum near 7000 Angstrom; the result is that many high order centrifugal distortion terms are needed in an effective Hamiltonian model for the rotation. Second, the hyperfine structure is perturbed, not only by this (II)-I-2 state, but by distant Sigma and Delta states at higher energy. The delta(2) sigma* C (4) Sigma(-) State at 21 350 cm(-1) appears to be one of these. The distant states generate large apparent nuclear spin-rotation interactions, both within and between the Lambda components of the II state, as a result of cross terms between matrix elements of the operators -2BJ.L and aI.L. Similar cross terms arising from the operators AL.S and aI.L produce corrections to the Fermi contact matrix elements and are responsible for the unexpected negative sign of the magnetic hyperfine parameter d. The {\textquoteright}{\textquoteright}off-diagonal{\textquoteright}{\textquoteright} quadrupole parameter e(2)Qq(2) is very large, and causes some of the higher J line shapes of the B-X system to be noticeably asymmetric at Doppler limited resolution; its value is consistent with the electron configuration of the B (II)-I-4 state being delta(2) pi.},
	keywords = {EMISSION-SPECTRUM, FOURIER-TRANSFORM SPECTROSCOPY, LASER, LINEAR MOLECULES, ORBIT DISTORTION, PARAMETERS, QUARTET, ROTATIONAL STRUCTURE, SPECTROSCOPY, SYSTEM, VO},
	isbn = {0021-9606},
	url = {<Go to ISI>://A1994NH84600016},
	author = {Adam, A. G. and Azuma, Y. and Barry, J. A. and Merer, A. J. and Sassenberg, U. and Schroder, J. O. and Cheval, G. and Femenias, J. L.}
}
@article {2761,
	title = {HYPERFINE AND SPIN-ORBIT STRUCTURE OF THE (4)DELTA(I) GROUND-STATE OF COO},
	journal = {Journal of Chemical Physics},
	volume = {99},
	number = {9},
	year = {1993},
	note = {ISI Document Delivery No.: MD981Times Cited: 22Cited Reference Count: 24},
	month = {Nov},
	pages = {6336-6344},
	type = {Article},
	abstract = {{A detailed examination of the structure of the 4DELTA(i) ground state of gaseous CoO has been carried out from analysis of the electronic spectrum near 6300 angstrom, using intracavity dye laser and wavelength-resolved fluorescence methods. The intracavity experiments have given the details of the hyperfine structure of the two lowest spin-orbit components at sub-Doppler resolution, permitting the hyperfine parameters},
	keywords = {BAND, FEO, laser spectroscopy, METAL-OXIDES, NIO, PARAMETERS, SYSTEM, VO},
	isbn = {0021-9606},
	url = {<Go to ISI>://A1993MD98100012},
	author = {Clouthier, D. J. and Huang, G. and Merer, A. J. and Friedmanhill, E. J.}
}
@article {6952,
	title = {ANOMALOUS STRUCTURE IN THE A 6-SIGMA+-X6-SIGMA+ TRANSITION OF MNO CAUSED BY INTERFERENCE BETWEEN 2 INTERNAL HYPERFINE PERTURBATIONS},
	journal = {Chemical Physics},
	volume = {152},
	number = {3},
	year = {1991},
	note = {ISI Document Delivery No.: FK694Times Cited: 14Cited Reference Count: 16},
	month = {May},
	pages = {391-398},
	type = {Article},
	abstract = {{Sub-Doppler spectra of the A 6-SIGMA+ - X 6-SIGMA+ electronic transition of gaseous MnO are reported. It is found that both electronic states contain "internal hyperfine perturbations" where the hyperfine levels of different electron spin components interact through matrix elements of the hyperfine Hamiltonian off-diagonal in the quantum number J. The nu = 0 level of the A 6-SIGMA+ state is severely perturbed by another electronic state so that its internal hyperfine perturbations are overwhelmed; in consequence the A-X (0, 0) band shows a characteristic pattern of line doublings, resulting from the internal perturbations of the X 6-SIGMA+ state alone. The A 6-SIGMA+},
	keywords = {ELECTRONIC-TRANSITION, SPECTROSCOPY, VO},
	isbn = {0301-0104},
	url = {<Go to ISI>://A1991FK69400013},
	author = {Adam, A. G. and Azuma, Y. and Li, H. and Merer, A. J. and Chandrakumar, T.}
}
