Synthesis of superheavy element 120 via {sup 50}Ti+{sup A}Cf hot fusion reactions

Journal Article · Sun Nov 15 00:00:00 EST 2009 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.80.054608· OSTI ID:21296502

Liu, Z H ^[1]; Jingdong, Bao ^[2]

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1. China Institute of Atomic Energy, Beijing 102413 (China)
2. Department of Physics, Beijing Normal University, Beijing 100875 (China)

Synthesis of superheavy element 120 in terms of the {sup 50}Ti+{sup 249-252}Cf fusion-evaporation reactions is evaluated and discussed. It is found that the reactions of {sup 250,251}Cf({sup 50}Ti,3n){sup 297,298}120 and {sup 251,252}Cf({sup 50}Ti,4n){sup 297,298}120 are relatively favorable with the maximum evaporation-residue cross sections of 0.12, 0.09, 0.11, and 0.25 pb, respectively. However, {sup 252}Cf may be difficult to be target because its spontaneous fission will bring about serious background in the experiment. Fusion probabilities for different target-projectile combinations leading to the formation of surperheavy nucleus {sup 302}120 are estimated with the ''fusion-by-diffusion'' model and presented as a function of the Coulomb parameter Z{sub 1}Z{sub 2}/(A{sub 1}{sup 1/3}+A{sub 2}{sup 1/3}). Among the reactions {sup 50}Ti+{sup 252}Cf, {sup 54}Cr+{sup 248}Cm, {sup 58}Fe+{sup 244}Pu, and {sup 64}Ni+{sup 238}U, the reaction {sup 50}Ti+{sup 252}Cf has the largest fusion probability. Synthesis of superheavy element 120 is of essential importance for determining whether the magic proton shell should be at Z=114 or at higher proton numbers Z=120-126. Therefore, the experiment to produce isotopes with Z=120 in the fusion reactions {sup 50}Ti+{sup 250,251}Cf is of great interest.

• OSTI ID: 21296502
• Journal Information: Physical Review. C, Nuclear Physics, Vol. 80, Issue 5; Other Information: DOI: 10.1103/PhysRevC.80.054608; (c) 2009 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CALIFORNIUM 249
CALIFORNIUM 250
CALIFORNIUM 251
CALIFORNIUM 252
CHROMIUM 54
CROSS SECTIONS
CURIUM 248
DIFFUSION
ELEMENT 120
EVAPORATION
INDIUM 120
IRON 58
NEUTRON EMISSION
NICKEL 64
NUCLEAR REACTIONS
PLUTONIUM 244
PROBABILITY
PROTONS
RESIDUES
SPONTANEOUS FISSION
SYNTHESIS
TITANIUM 50
TITANIUM 50 REACTIONS
TRANSACTINIDE ELEMENTS
URANIUM 238