Electronic Resource
College Park, Md.
:
American Institute of Physics (AIP)
The Journal of Chemical Physics
101 (1994), S. 74-79
ISSN:
1089-7690
Source:
AIP Digital Archive
Topics:
Physics
,
Chemistry and Pharmacology
Notes:
The electronic emission spectra of HfH and HfD were investigated in the 476 nm to 1 μm spectral region using a Fourier transform spectrometer. The bands were excited in a hafnium hollow cathode lamp in the presence of a mixture of neon and H2 or D2. For HfH, two ΔΩ=0 electronic transitions with a common Ω‘=3/2 lower state, most probably the X 2Δ3/2 ground state, were identified at 14 495 and 19 147 cm−1. These bands have been assigned as the [14.5]3/2−X 2Δ3/2 and the [19.1]3/2−X 2Δ3/2 transitions. The rotational analysis of the 0–0 and 1–1 bands of the [14.5]3/2−X 2Δ3/2 system and the 0–0 band of the [19.1]3/2−X 2Δ3/2 system provides the following equilibrium constants for the ground state of HfH: Be‘ = 5.019 11(8) cm−1, αe‘= 0.120 26(11) cm−1, and re‘ = 1.830 691(15) A(ring). For HfD, only the 0–0 band of the [19.1]3/2−X 2Δ3/2 transition at 19 134 cm−1 was identified. This work represents the first observation of the HfH and the HfD molecules.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.468130
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