Few-nucleon transfer reactions on deformed nuclei Page: 2 of 28
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cases, however, the analysis of heavy-ion transfer reaction data in terms of a
Distorted Wave Born Approximation (DWBA) will be complicated since individual
levels will not be resolved (in particular the pure elastic scattering can not
be measured in most cases). On the one hand, an analysis of data for strongly
deformed nuclei in terms of a Coupled Channel Born Approximation (CCBA)
calculation should be more appropriate instead of a simple CUBA calculation.
But on the other hand, coupling to a great number of states in a rotational
nucleus will make a detailed CCBA analysis for a transfer reaction virtually
impossible because of computational limits. Therefore one has to rely on
results of a simple CCBA or even a CUBA calculation. However, one knows that
matching of the reaction Q-value and of the transferred angular momentum is a
dominant factor in a heavy-ion transfer reaction and in most cases a simple
diffractional model calculation might be useful to rnderstand the total yield
measured in a given excitation energy range.
2. Alpha-transfer on deformed nuclei.
The study of the population of individual levels in deformed nuclei at
low excitation energies using an a-transfer reaction has been mainly
restricted to the (d,^Li) or its inverse reaction. Systematic a-transfer
studies on heavy deformed nuclei have been reported by several groups^"^.
Some of the recent a-transfer reactions on deformed nuclei in the actinide
mass region have been motivated because of suggested^) "a-clustering" in
these nuclei. It should be noted that up to now no conclusive evidence has
been established for "a-clustering" states and in addition to the available
a-pickup and two-neutron transfer data, a systematic investigation of two-
proton transfer reactions is needed. From an experimental point of view it is
easier to study nuclei in the A ■ 190 mass region, where two-proton, two-
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van den Berg, A.M. Few-nucleon transfer reactions on deformed nuclei, article, January 1, 1985; Illinois. (digital.library.unt.edu/ark:/67531/metadc1093917/m1/2/: accessed December 17, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.