Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2001-06-19
Nucl.Phys. A703 (2002) 70-82
Physics
Nuclear Physics
Nuclear Theory
22 pages, 7 figures, typeset using REVTeX
Scientific paper
10.1016/S0375-9474(01)01332-X
We analyze the properties of deuteron-like structures in infinite, correlated nuclear matter, described by a realistic hamiltonian containing the Urbana $v_{14}$ two-nucleon and the Urbana TNI many-body potentials. The distribution of neutron-proton pairs, carrying the deuteron quantum numbers, is obtained as a function of the total momentum by computing the overlap between the nuclear matter in its ground state and the deuteron wave functions in correlated basis functions theory. We study the differences between the S- and D-wave components of the deuteron and those of the deuteron-like pair in the nuclear medium. The total number of deuteron type pairs is computed and compared with the predictions of Levinger's quasideuteron model. The resulting Levinger's factor in nuclear matter at equilibrium densityis 11.63. We use the local density approximation to estimate the Levinger's factor for heavy nuclei, obtaining results which are consistent with the available experimental data from photoreactions.
Benhar Omar
Fabrocini Adelchi
Fantoni Stefano
Illarionov Alexei Yu.
Lykasov Gennadi I.
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