27,051 research outputs found
Quantum Tunneling in Nuclear Fusion
Recent theoretical advances in the study of heavy ion fusion reactions below
the Coulomb barrier are reviewed. Particular emphasis is given to new ways of
analyzing data, such as studying barrier distributions; new approaches to
channel coupling, such as the path integral and Green function formalisms; and
alternative methods to describe nuclear structure effects, such as those using
the Interacting Boson Model. The roles of nucleon transfer, asymmetry effects,
higher-order couplings, and shape-phase transitions are elucidated. The current
status of the fusion of unstable nuclei and very massive systems are briefly
discussed.Comment: To appear in the January 1998 issue of Reviews of Modern Physics. 13
Figures (postscript file for Figure 6 is not available; a hard copy can be
requested from the authors). Full text and figures are also available at
http://nucth.physics.wisc.edu/preprints
Pairing Effects in Nuclear Fusion Reaction
We simulate a heavy-ion collision using the canonical-basis time-dependent
Hartree-Fock-Bogoliubov theory (Cb-TDHFB) treating pairing correlation in the
three-dimensional coordinate space. We apply the Cb-TDHFB to 22O+22O collision
with a contact-type pairing energy functional, and compare results of Cb-TDHFB
and TDHF to investigate the effects of pairing correlations in nuclear fusion.
Our results seem to indicate that pairing effects do not increase the fusion
cross section in this system.Comment: 4 pges, 2 figures, Proceedings of the 12th Asia Pacific Physics
Conference(APPC12
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