التفاصيل البيبلوغرافية
| العنوان: |
First superheavy element experiments at the GSI recoil separator TASCA: The production and decay of element 114 in the 244Pu(48Ca,3-4n) reaction. |
| المؤلفون: |
Gates, J. M.1,2,3 jmgates@lbl.gov, Düllmann, Ch. E.4,5, Schädel, M.1, Yakushev, A.2, Türler, A.2, Eberhardt, K.4, Kratz, J. V.4, Ackermann, D.1, Andersson, L.-L.6, Block, M.1, Brüchle, W.1, Dvorak, J.3, Essel, H. G.1, Ellison, P. A.3,7, Even, J.4, Forsberg, U.8, Gellanki, J.8, Gorshkov, A.2, Graeger, R.2, Gregorich, K. E.3 |
| المصدر: |
Physical Review C: Nuclear Physics. May2011, Vol. 83 Issue 5, p54618:1-54618:17. 17p. |
| مصطلحات موضوعية: |
*SUPERHEAVY elements, *ISOTOPES, *ION bombardment, *COLLISIONAL excitation, *NUCLEAR cross sections, *ELECTRON-nucleus scattering |
| مصطلحات جغرافية: |
DARMSTADT (Germany), GERMANY |
| مستخلص: |
Experiments with the new recoil separator, Transactinide Separator and Chemistry Apparatus (TASCA), at the GSI were performed by using beams of 48Ca to irradiate targets of 206-208Pb, which led to the production of 252-254No isotopes. These studies allowed for evaluation of the performance of TASCA when coupled to a new detector and electronics system. By following these studies, the isotopes of element 114 (288-291114) were produced in irradiations of 244Pu targets with 48Ca beams at compound nucleus excitation energies around 41.7 and 37.5 MeV, demonstrating TASCA's ability to perform experiments with picobarn-level cross sections. A total of 15 decay chains were observed and were assigned to the decay of 288-291114. A new α-decay branch in 281Ds was observed, leading to the new nucleus 277Hs. [ABSTRACT FROM AUTHOR] |
| قاعدة البيانات: |
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