Study of high-lying cluster states of nuclei by the method of particle-particle angular correlationsстатья

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[1] Belyaeva T. L., Zelenskaya N. S. Study of high-lying cluster states of nuclei by the method of particle-particle angular correlations // Physics of Particles and Nuclei. — 1998. — Vol. 29, no. 2. — P. 107–135. The current status of research on nuclear reactions induced by light and semiheavy ions of energy up to 10 MeV/nucleon on light and intermediate nuclei by measurement of the angular correlation functions of the final products is reviewed. The principal theoretical and experimental studies on particle-particle correlations carried out in recent years are analyzed. The methods of calculating the angular correlation functions and the spin tensors of the reaction-product density matrix for reactions involving excited states using the distorted-wave method with finite interaction range and the modified compound-nucleus model are described. The alpha-d and alpha-t correlations in reactions involving Li-6,Li-7 and N-14 ions are analyzed. The highly excited alpha-cluster states in C-12, O-16, Ne-20, and Mg-24 are studied. The polarization tensors of the Li-6 nucleus in the 3(+) state are calculated and compared with experiment. It is shown that the particle-particle angular correlation functions and the polarization tensors can provide unique information about the reaction mechanism and about the structure of the wave functions of highly excited nuclear states, including the nature of the radial dependence in the interior of the nucleus and the optical interaction potentials in the entrance and exit reaction channels, and so on. This review can be useful for both theoreticians and experimentalists working on the physics of nuclear reactions involving particles of moderate energy. (C) 1998 American Institute of Physics. [ DOI ]

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