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Metal hyperfine structure in magnesium chloride. The millimeter-wave spectrum of 25MgCl and 26MgCl

✍ Scribed by M.A. Anderson; L.M. Ziurys

Publisher: Elsevier Science
Year: 1994
Tongue: English
Weight: 726 KB
Volume: 224
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(94)00532-x

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✦ Synopsis

Rotational spectra of the magnesium and chlorine isotopomers of MgCl (X 'Z') have been measured in the frequency range 260-380 GHz using direct absorption techniques. The species studied ( 25Mg3sC1, 2sMg37CI, 26Mg35Cl, and 26Mg37C1) were created in a dc glow discharge by the reaction of magnesium vapor with CCL,. Several rotational transitions were recorded for each isotopomer, and fine structure, as well as hyperfime splittings due to the 25Mg nucleus, were observed. Rotational, spin-rotation and hype&me constants were determined for these radicals. The average value of the Fermi contact term was !+( 25Mg) = -3 17.8 (4.9) MHz, indicating a large electron density at the magnesium nucleus.

' NASA Space Grant Fellow.

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