βdecay of40Tiand41Tiand implication for solar-neutrino detection
| Autor: | E. Roeckl, I. Reusen, Z. Hu, A. Wöhr, Weiping Liu, F. Farget, Naohito Iwasa, R. Collatz, G. Vancraeynest, M. Pfützner, H. Grawe, J. Benlliure, Margareta Hellström, Riccardo Raabe, L. V. Chulkov, D. Cortina Gil, A. Piechaczek |
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| Rok vydání: | 1998 |
| Předmět: | |
| Zdroj: | Physical Review C. 58:2677-2688 |
| ISSN: | 1089-490X 0556-2813 |
| DOI: | 10.1103/physrevc.58.2677 |
| Popis: | The $\ensuremath{\beta}$ decay of ${}^{40}\mathrm{Ti}$ and ${}^{41}\mathrm{Ti}$ was studied by measuring the $\ensuremath{\beta}$-delayed proton and $\ensuremath{\gamma}$ emission. The half-lives for ${}^{40}\mathrm{Ti}$ and ${}^{41}\mathrm{Ti}$ were determined to be 54(2) and 82(3) ms, respectively. The experimental $\ensuremath{\beta}$-decay strengths are compared with shell-model calculations and results from other measurements. The integrated Gamow-Teller strengths for ${}^{40}\mathrm{Ti}$ and ${}^{41}\mathrm{Ti}$ were found to be quenched, compared to the calculations, by factors of 0.79(3) and 0.93(3), respectively. Based on the experimental ${}^{40}\mathrm{Ti} \ensuremath{\beta}$-decay strength, the neutrino absorption cross section and induced neutrino event rates for ${}^{40}\mathrm{Ar}$ were determined to be $14.3(3)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}43} {\mathrm{cm}}^{2}$ and $9.4\ifmmode\pm\else\textpm\fi{}0.2(\mathrm{stat}{)}_{\ensuremath{-}1.6}^{+1.3}(\mathrm{syst})$ SNU, respectively. |
| Databáze: | OpenAIRE |
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