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Hamoudi, A.; Nazmitdinov, R.G.; Shakhaliev, E.; Alhassid, Y.
Laboratory of High Energies, Joint Institute for Nuclear Research, Dubna (Russian Federation); Bogolyubov Laboratory of Theoretical Physics, Joint Institute for Nuclear Research, Dubna (Russian Federation)2000
Laboratory of High Energies, Joint Institute for Nuclear Research, Dubna (Russian Federation); Bogolyubov Laboratory of Theoretical Physics, Joint Institute for Nuclear Research, Dubna (Russian Federation)2000
AbstractAbstract
[en] We study the fluctuation properties of ΔT = 0 electromagnetic transition intensities in A ∼ 60 nuclei within the framework of the interacting shell model, using a realistic effective interaction for pf-shell nuclei with a 56Ni core. It is found that the B(E2) and the ΔJ ≠ 0 distributions are well described by the Gaussian orthogonal ensemble of random matrices (Porter-Thomas distribution) independently of the isobaric quantum number TZ. However, the statistics of the B(M1) transitions with Δ = 0 are sensitive to TZ: TZ = 1 nuclei exhibit a Porter-Thomas distribution, while a significant deviation from the GOE statistics is observed for self-conjugate nuclei (TZ = 0). Similar results are found for A = 22 sd-shell nuclei
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2000; 11 p; 24 refs., 5 figs. Submitted to Physical Review. C, Nuclear Physics
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Report
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BETA DECAY RADIOISOTOPES, BETA-PLUS DECAY RADIOISOTOPES, DAYS LIVING RADIOISOTOPES, ELECTRON CAPTURE RADIOISOTOPES, ENERGY-LEVEL TRANSITIONS, EVEN-EVEN NUCLEI, FUNCTIONS, INTERMEDIATE MASS NUCLEI, ISOTOPES, MATHEMATICAL MODELS, MATHEMATICS, MULTIPOLE TRANSITIONS, NICKEL ISOTOPES, NUCLEAR MODELS, NUCLEI, RADIOISOTOPES, VARIATIONS
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