| Autor: |
Ortner, K., Andreoiu, C., Spieker, M., Ball, G. C., Bernier, N., Bidaman, H., Bildstein, V., Bowry, M., Cross, D. S., Dunlop, M. R., Dunlop, R., Garcia, F. H., Garnsworthy, A. B., Garrett, P. E., Henderson, J., Measures, J., Olaizola, B., Park, J., Petrache, C. M., Pore, J. L., Raymond, K., Smith, J. K., Southall, D., Svensson, C. E., Ticu, M., Turko, J., Whitmore, K., Zidar, T. |
| Rok vydání: |
2020 |
| Předmět: |
|
| Druh dokumentu: |
Working Paper |
| Popis: |
The low-lying structure of semi-magic $^{118}$Sn has been investigated through the $\beta$-decay of $^{118}$In ($T_{1/2}=4.45$ min) to study shape coexistence via the reduced transition probabilities of states in the 2p-2h proton intruder band. This high-statistics study was carried out at TRIUMF-ISAC with the GRIFFIN spectrometer. In total, 99 transitions have been placed in the level scheme with 43 being newly observed. Three low-lying $\gamma$-ray transitions with energies near 285 keV have been resolved from which the 2$^+_{\mathrm{intr.}} \rightarrow 0^+_{\mathrm{intr.}}$ 284.52-keV transition was determined to have half of the previous branching fraction leading to a $B(E2;2^+_2\rightarrow 0^+_2)$ of 21(4) W.u. compared to 39(7) W.u. from the previous measurement. Calculations using $sd$ IBM-2 with mixing have also been made to compare the experimental $B(E2)$ values to the theoretical values and to make comparisons to the $^{114,116}$Sn isotopes previously studied using the same theoretical model. |
| Databáze: |
arXiv |
| Externí odkaz: |
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