Statistical Fluctuations of Electromagnetic Transition Intensities in pf-Shell Nuclei

Details Statistical Fluctuations of Electromagnetic Transition Intensities in pf-Shell Nuclei Statistical Fluctuations of Electromagnetic Transition Intensities in pf-Shell Nuclei

1998-04-20

arxiv.org/abs/nucl-th/9804041v1

Phys.Rev. C65 (2002) 064311

Physics

Nuclear Physics

Nuclear Theory

8 pages, latex, 3 figures (ps format)

Scientific paper

10.1103/PhysRevC.65.064311

We study the fluctuation properties of E2 and M1 transition intensities among T=0,1 states of A = 60 nuclei in the framework of the interacting shell model, using a realistic effective interaction for pf-shell nuclei with a Ni56 as a core. It is found that the B(E2) distributions are well described by the Gaussian orthogonal ensemble of random matrices (Porter-Thomas distribution) independently of the isobaric quantum number T_z. However, the statistics of the B(M1) transitions is sensitive to T_z: T_z=1 nuclei exhibit a Porter-Thomas distribution, while a significant deviation from the GOE statistics is observed for self-conjugate nuclei (T_z=0).

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