Total Kinetic Energy - Mass distributions of fission-like fragments for the reactions of 22Ne, 26Mg, 36S, 48Ca, 58Fe and 64Ni ions with actinides leading to the formation of superheavy compound systems with Z=108-120 at energies near the Coulomb barrier have been measured. Fusion-fission cross sections were estimated from the analysis of mass and total kinetic energy distributions. It was found that the fusion probability drops by three orders of magnitude for the formation of the compound nucleus with Z=120 obtained in the reaction 64Ni+238U compared to the formation of the compound nucleus with Z=112 obtained in the reaction 48Ca+238U at the excitation energy of the compound nucleus of about 45 MeV. From our analysis it turns out that the reaction 64Ni+238U is not suitable for the synthesis of element Z=120.
Fusion-Fission of superheavy compound nuclei produced in reacions with heavy ions beyond Ca / M. G., Itkis; F., Goennenwein; I. M., Itkis; G. N., Knyazheva; E. M., Kozulin; A. A., Bogachev; Vardaci, Emanuele. - In: EPJ WEB OF CONFERENCES. - ISSN 2100-014X. - 17:(2011), pp. 12002-1-12002-4. ( 5th International Conference FUSION11 Saint-Malo, France May 2-6, 2011) [10.1051/epjconf/20111712002].
Fusion-Fission of superheavy compound nuclei produced in reacions with heavy ions beyond Ca
VARDACI, EMANUELE
2011
Abstract
Total Kinetic Energy - Mass distributions of fission-like fragments for the reactions of 22Ne, 26Mg, 36S, 48Ca, 58Fe and 64Ni ions with actinides leading to the formation of superheavy compound systems with Z=108-120 at energies near the Coulomb barrier have been measured. Fusion-fission cross sections were estimated from the analysis of mass and total kinetic energy distributions. It was found that the fusion probability drops by three orders of magnitude for the formation of the compound nucleus with Z=120 obtained in the reaction 64Ni+238U compared to the formation of the compound nucleus with Z=112 obtained in the reaction 48Ca+238U at the excitation energy of the compound nucleus of about 45 MeV. From our analysis it turns out that the reaction 64Ni+238U is not suitable for the synthesis of element Z=120.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
