Estimating Unknown Spins from Random Matrix Theory
نویسندگان
چکیده
The neutron resonances, especially in heavy fissioning nuclei, were extensively studied during last 60 years. The renewed interest to their properties is related to the problem of quantum chaos. In the region of low neutron energies, the resonances are very narrow and well separated. The large lifetime and the small energy spread allow one to interpret a resonance as a fully equilibrated compound state. Intrinsic wave functions of such states are very complex superpositions of a great number (typically 10 10) of simple shell model configurations, with presumably random phases. Since the individual properties of resonances are apparently unpredictable, the statistical approach is the only possible. The sequences of neutron resonances served as the first testing ground for the application of ideas of quantum chaos [1]. The s-wave resonances with the same quantum numbers J reveal a good agreement with the Wigner nearest level spacing distribution
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تاریخ انتشار 1998