| Autor: |
Khuyagbaatar, J, Yakushev, A, Duellmann, Ch E, Ackermann, D, Andersson, L-L, Block, M, Brand, H, Cox, DM, Even, J, Forsberg, U, Golubev, P, Hartmann, W, Herzberg, R-D, Hessberger, FP, Hoffmann, J, Huebner, A, Jaeger, E, Jeppsson, J, Kindler, B, Kratz, JV, Krier, J, Kurz, N, Lommel, B, Maiti, M, Minami, S, Mistry, AK, Mrosek, Ch M, Pysmenetska, I, Rudolph, D, Sarmiento, LG, Schaffner, H, Schaedel, M, Schausten, B, Steiner, J, De Heidenreich, T Torres, Uusitalo, J, Wegrzecki, M, Wiehl, N, Yakusheva, V |
| Jazyk: |
angličtina |
| Rok vydání: |
2015 |
| Zdroj: |
PHYSICAL REVIEW LETTERS |
| Popis: |
Two short-lived isotopes 221U and 222U were produced as evaporation residues in the fusion reaction 50Ti+176Yb at the gas-filled recoil separator TASCA. An α decay with an energy of Eα=9.31(5) MeV and half-life T1/2=4.7(7) μs was attributed to 222U. The new isotope 221U was identified in α-decay chains starting with Eα=9.71(5) MeV and T1/2=0.66(14) μs leading to known daughters. Synthesis and detection of these unstable heavy nuclei and their descendants were achieved thanks to a fast data readout system. The evolution of the N=126 shell closure and its influence on the stability of uranium isotopes are discussed within the framework of α-decay reduced width. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
|
