Dynamical nucleus-nucleus potential at short distances

Journal Article · Thu Apr 15 04:00:00 EDT 2010 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.81.044602· OSTI ID:21388933

Yongying, Jiang; Ning, Wang ^[1]; Zhuxia, Li ^[2]; Scheid, Werner ^[3]

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1. Department of Physics, Guangxi Normal University, Guilin 541004 (China)
2. China Institute of Atomic Energy, Beijing 102413 (China)
3. Institute for Theoretical Physics, Justus-Liebig-University, D-35392 Giessen (Germany)

The dynamical nucleus-nucleus potentials for fusion reactions {sup 40}Ca+{sup 40}Ca, {sup 48}Ca+{sup 208}Pb, and {sup 126}Sn+{sup 130}Te are studied with the improved quantum molecular dynamics model together with the extended Thomas-Fermi approximation for the kinetic energies of nuclei. The obtained fusion barrier for {sup 40}Ca+{sup 40}Ca is in good agreement with the extracted fusion barrier from the measured fusion excitation function, and the depths of the fusion pockets are close to the results of time-dependent Hartree-Fock calculations. The energy dependence of the fusion barrier is also investigated. The fusion pocket becomes shallow for a heavy fusion system and almost disappears for heavy nearly symmetric systems, and the obtained potential at short distances is higher than the adiabatic potential.

• OSTI ID: 21388933
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 4 Vol. 81; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALKALINE EARTH ISOTOPES
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ATOMIC MODELS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CALCIUM 40
CALCIUM 48
CALCIUM ISOTOPES
CALCULATION METHODS
CROSS SECTIONS
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MATHEMATICAL MODELS
MOLECULAR DYNAMICS METHOD
NUCLEAR REACTIONS
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NUCLEON-NUCLEON POTENTIAL
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