TY - JOUR
T1 - The millimeter and sub-millimeter spectrum of the BaOH radical
AU - Anderson, M. A.
AU - Allen, M. D.
AU - Barcaly, W. L.
AU - Ziurys, L. M.
N1 - Funding Information:
This research was supported by NFS grants AST-90-58467 (Presidential Young Investigator Award) and AST-10701, and NASA grant NAGW 2989. MAA and WLB acknowledge the NASA Space Grant Program at ASU for their fellowships.
PY - 1993/4/16
Y1 - 1993/4/16
N2 - The pure rotational spectrum of the X2Σ+ ground electronic states of the BaOH and BaOD radicals has been observed using millimeter/sub-millimeter direct absorption spectroscopy. The lesser abundant isotopically substituted species, 136BaOH and 137BaOH, have been detected as well. The radicals were created by reacting barium metal vapor, produced in a Broida-type oven, with either H2O2 or D2O2. The rotational and spin-rotation constants were determined for the molecules from a nonlinear leastsquares fit to the data, using a 2Σ Hamiltonian. Hyperfine constants were also derived for 137BaOH, the one species where hyperfine structure was resolved. These measurements confirm a linear structure for BaOh.
AB - The pure rotational spectrum of the X2Σ+ ground electronic states of the BaOH and BaOD radicals has been observed using millimeter/sub-millimeter direct absorption spectroscopy. The lesser abundant isotopically substituted species, 136BaOH and 137BaOH, have been detected as well. The radicals were created by reacting barium metal vapor, produced in a Broida-type oven, with either H2O2 or D2O2. The rotational and spin-rotation constants were determined for the molecules from a nonlinear leastsquares fit to the data, using a 2Σ Hamiltonian. Hyperfine constants were also derived for 137BaOH, the one species where hyperfine structure was resolved. These measurements confirm a linear structure for BaOh.
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U2 - 10.1016/0009-2614(93)87144-R
DO - 10.1016/0009-2614(93)87144-R
M3 - Article
AN - SCOPUS:0000868677
VL - 205
SP - 415
EP - 422
JO - Chemical Physics Letters
JF - Chemical Physics Letters
SN - 0009-2614
IS - 4-5
ER -