Neutron resonance parameters in155Gd measured with the DANCEγ-ray calorimeter array
| Autor: | R. C. Haight, Bayarbadrakh Baramsai, M. Krtička, U. Agvaanluvsan, F. Bečvář, Dugersuren Dashdorj, D. J. Vieira, A. L. Keksis, Aaron Couture, G. E. Mitchell, Todd Bredeweg, C. L. Walker, John M. O'Donnell, Marian Jandel, A. Chyzh, Robert S. Rundberg, J. L. Ullmann |
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| Rok vydání: | 2012 |
| Předmět: | |
| Zdroj: | Physical Review C. 85 |
| ISSN: | 1089-490X 0556-2813 |
| DOI: | 10.1103/physrevc.85.024622 |
| Popis: | The ${}^{155}$Gd($n$,$\ensuremath{\gamma}$) reaction was measured with the DANCE $\ensuremath{\gamma}$-ray calorimeter at the Los Alamos Neutron Science Center. Spins were determined for the $s$-wave resonances by analysis of the $\ensuremath{\gamma}$-ray multiplicity distributions. The analysis was performed with a pattern recognition method. The resulting level densities for the $J=1$ and 2 resonances are in qualitative agreement with the expected 2$J$ $+$ 1 dependence. The average $s$-wave resonance spacing was determined to be ${D}_{0}=1.62$ $\ifmmode\pm\else\textpm\fi{}$ 0.15 eV. Analysis of the neutron resonances with the code sammy yielded the $s$-wave strength function ${S}_{0}=1.99\ifmmode\pm\else\textpm\fi{}0.28\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}4}$ and the average total radiative width ${\ensuremath{\Gamma}}_{\ensuremath{\gamma}}$ $=$ 120 $\ifmmode\pm\else\textpm\fi{}$ 3 meV. |
| Databáze: | OpenAIRE |
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