- th / 9 40 70 37 v 1 2 1 Ju l 1 99 4 Effects of nuclear structure on average angular momentum in subbarrier fusion
نویسندگان
چکیده
We investigate the effects of nuclear quadrupole and hexadecapole couplings on the average angular momentum in sub-barrier fusion reactions. This quantity could provide a probe for nuclear shapes, distinguishing between prolate vs. oblate quadrupole and positive vs. negative hexadecapole couplings. We describe the data in the O + Sm system and discuss heavier systems where shape effects become more pronounced.
منابع مشابه
ar X iv : n uc l - th / 9 60 70 02 v 1 2 J ul 1 99 6 MAD - NT - 96 - 03 Relations Between Fusion Cross Sections and Average Angular
We study the relations between moments of fusion cross sections and averages of angular momentum. The role of the centrifugal barrier and the target deformation in determining the effective barrier radius are clarified. A simple method for extracting average angular momentum from fusion cross sections is demonstrated using numerical examples as well as actual data. 25.70.Jj, 21.60.Fw, 21.60.Ev ...
متن کامل- th / 0 40 80 25 v 1 9 A ug 2 00 4 1 FUSION 03 , Concluding Remarks
Fusion reactions below the Coulomb barrier provide new insights into multidimensional quantum tunneling, nuclear reaction dynamics and nuclear structure.1), 2) These reactions are also of considerable interest to nuclear astrophysics. The evolution of main sequence stars, in particular stellar nucleosynthesis is governed by subbarrier fusion.3) It may be worthwhile to review some of the basic a...
متن کاملar X iv : n uc l - ex / 9 70 70 05 v 1 2 2 Ju l 1 99 7 1 Barrier Distributions as a Tool to Investigate Fusion and Fission
The recent availability of precisely measured fusion cross-sections has enabled the extraction of a representation of the distribution of barriers encountered during fusion. These representations, obtained from a variety of reactions, provide a direct observation of how the structure of the fusing nuclei changes the inter–nuclear potential landscape, thus affecting the fusion probability. Recen...
متن کاملar X iv : n uc l - th / 9 40 70 36 v 1 2 1 Ju l 1 99 4 KUNS 1281 Flow of Nucleons and Fragments in 40 Ar + 27 Al Collisions Studied with AMD
Collective transverse momentum flow of nucleons and fragments in intermediate energy 40Ar + 27Al collisions is calculated with the antisymmetrized molecular dynamics (AMD). The observed flow and its balance energy are reproduced very well by the calculation with the Gogny force which corresponds to the soft EOS of the nuclear matter. Especially the calculated absolute value of the fragment flow...
متن کاملar X iv : n uc l - th / 9 70 80 36 v 1 1 9 A ug 1 99 7 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 Intera...
متن کامل