Model independent determination of the spin of theTa180naturally occurring isomer
| Autor: | D. H. Forest, M. D Gardner, K. Baczynska, Tommi Eronen, Juha Äystö, G. Tungate, B. Tordoff, Mark Bissell, J. Billowes, Bradley Cheal, Paul Campbell, Iain Moore |
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| Rok vydání: | 2006 |
| Předmět: | |
| Zdroj: | Physical Review C. 74 |
| ISSN: | 1089-490X 0556-2813 |
| DOI: | 10.1103/physrevc.74.047301 |
| Popis: | The hyperfine structures of the 33715.27 ${\mathrm{cm}}^{\ensuremath{-}1}$ and 33706.47 ${\mathrm{cm}}^{\ensuremath{-}1}$ transitions from the ground state of singly ionized Ta have been measured by collinear laser spectroscopy. The structures were found to contain a large second order contribution. From fitting the observed hyperfine components for both $^{181}\mathrm{Ta}$ and the $^{180}\mathrm{Ta}$ naturally occurring isomer it was possible to determine the first and second order hyperfine structure coefficients. As no model independent determination of the nuclear spin of the $^{180}\mathrm{Ta}$ isomer has been performed, fitting was attempted for a range of spins. A clear chi-squared minimum is obtained for a nuclear spin of 9, in agreement with model dependent measurements. |
| Databáze: | OpenAIRE |
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