TY - JOUR
T1 - Optical stark spectroscopy of the D1Π-X1Σ +(0,0) band of scandium monohydride
AU - Le, Anh
AU - Steimle, Timothy
PY - 2011/9/1
Y1 - 2011/9/1
N2 - The laser induced fluorescence (LIF) spectra of the D1Π- X1Σ+(0,0) band of a rotationally cold (<20 K) molecular beam sample of scandium monohydride, ScH, and scandium monodeuteride, ScD, were recorded without and in the presence of a static electric field. The fine and magnetic hyperfine parameters for the X1Σ +(v=0) and D1Π(v=0) states of ScH and ScD were determined from the analysis of the field-free spectra. An unexpected isotopic dependence of the 45Sc(I=7/2) magnetic hyperfine interaction was observed. The lowest J-levels of the D1Π(v=0) state of ScH are not perturbed, but the corresponding levels for ScD are strongly perturbed. The observed electric field induced splitting, broadenings, and shifts were analyzed to produce permanent electric dipole moments, μe, of 1.74 ± 0.15 and 2.177 ± 0.006 D for the X1Σ +(v=0) and D1Π(v=0) states, respectively. The trend in μ e for the 3d-metal monohydrides is discussed.
AB - The laser induced fluorescence (LIF) spectra of the D1Π- X1Σ+(0,0) band of a rotationally cold (<20 K) molecular beam sample of scandium monohydride, ScH, and scandium monodeuteride, ScD, were recorded without and in the presence of a static electric field. The fine and magnetic hyperfine parameters for the X1Σ +(v=0) and D1Π(v=0) states of ScH and ScD were determined from the analysis of the field-free spectra. An unexpected isotopic dependence of the 45Sc(I=7/2) magnetic hyperfine interaction was observed. The lowest J-levels of the D1Π(v=0) state of ScH are not perturbed, but the corresponding levels for ScD are strongly perturbed. The observed electric field induced splitting, broadenings, and shifts were analyzed to produce permanent electric dipole moments, μe, of 1.74 ± 0.15 and 2.177 ± 0.006 D for the X1Σ +(v=0) and D1Π(v=0) states, respectively. The trend in μ e for the 3d-metal monohydrides is discussed.
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U2 - 10.1021/jp110838j
DO - 10.1021/jp110838j
M3 - Article
C2 - 21338160
AN - SCOPUS:80052203463
SN - 1089-5639
VL - 115
SP - 9370
EP - 9376
JO - Journal of Physical Chemistry A
JF - Journal of Physical Chemistry A
IS - 34
ER -