Competing fusion and quasifission reaction mechanisms in the production of superheavy nuclei

Journal Article · Fri Oct 15 00:00:00 EDT 2010 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.82.044614· OSTI ID:21419624

Minghui, Huang; Zaiguo, Gan; Xiaohong, Zhou ^[1]; Junqing, Li ^[1]; Scheid, W ^[2]

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1. Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000 (China)
2. Institut fuer Theoretische Physik der Universitaet, D-35392 Giessen (Germany)

Within the framework of a dinuclear system model, a new master equation is constructed and solved, which includes the relative distance of nuclei as a new dynamical variable in addition to the mass asymmetry variable so that the nucleon transfer, which leads to fusion and the evolution of the relative distance, which leads to quasifission (QF) are treated simultaneously in a consistent way. The QF mass yields and evaporation residual cross sections to produce superheavy nuclei are systematically investigated under this framework. The results fit the experimental data well. It is shown that the Kramers formula gives results of QF, which agree with those by our diffusion treatment, only if the QF barrier is high enough. Otherwise some large discrepancies occur.

• OSTI ID: 21419624
• Journal Information: Physical Review. C, Nuclear Physics, Vol. 82, Issue 4; Other Information: DOI: 10.1103/PhysRevC.82.044614; (c) 2010 The American Physical Society; ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ASYMMETRY
CROSS SECTIONS
DIFFUSION
EVAPORATION
HEAVY NUCLEI
MASS
NUCLEONS
QUASI-FISSION
REACTION KINETICS
SIMULATION
TRANSACTINIDE ELEMENTS
BARYONS
ELEMENTARY PARTICLES
ELEMENTS
FERMIONS
HADRONS
HEAVY ION REACTIONS
KINETICS
NUCLEAR REACTIONS
NUCLEI
PHASE TRANSFORMATIONS
TRANSPLUTONIUM ELEMENTS
TRANSURANIUM ELEMENTS