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Saturation Spectrum of the ν2/ν4Dyad of AsH3

✍ Scribed by G. Spiegl; W.A. Kreiner


Publisher
Elsevier Science
Year
1998
Tongue
English
Weight
710 KB
Volume
187
Category
Article
ISSN
0022-2852

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✦ Synopsis


The n 2 / n 4 dyad of arsine, AsH 3 , has been investigated between 875 and 1100 cm 01 by laser sideband spectroscopy. In total 189 transitions have been observed with sub-Doppler resolution ( É300 kHz ) and measured to an absolute accuracy of about 100 kHz. These data may be useful to serve as a secondary frequency standard. Our observations include four perturbation-allowed transitions with D( k 0 l ) Å 3. Saturation spectra of dipole forbidden transitions had not been previously reported for arsine. Quadrupole hyperfine structure, as well as vibrationrotation splitting of Ék 0 lÉ Å 3N levels in both fundamentals, has been analyzed. Combining our results with MW and RF data ( 239 frequencies ) reported in the literature, a total of 882 transition frequencies were available to fit 15 ground state parameters and 48 excited state parameters of the n 2 / n 4 dyad. The standard deviation of the fit is 245 kHz.


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