Abstract
A comparison of the limitations of the eigenvalues for the effective neutron multiplication factor per neutron generation, k, the multiplication factor per collision, ..gamma.., and the fundamental multiplication rate, ..cap alpha.., is presented as they concern the neutron spectrum and the spectral properties of the integral transport operators. Numerical examples of analyses of fast-neutron plutonium systems are given. Advantages of the rarely used ..gamma.. eigenvalue are discussed, leading to the conclusion that it should be used more often.
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