fission spectrum

fission spectrum

[′fish·ən ‚spek·trəm]
(nuclear physics)
The energy distribution of neutrons arising from fission.
References in periodicals archive ?
Fission spectrum of fissile nuclide (or their combination) is given for reactor fission media Q(E), which, according to [1, 12] can be defined by the following expression:
With further decrease of neutron energy (10 eV [less than or equal to] [E.sub.n] [less than or equal to] 100 keV), both terms in the curly brackets of the expression (18) are approximately the same, and therefore this part of the energy spectrum of the moderating neutron can be called a "transition area" because it is formed by the contributions of the two terms in the curly brackets of the expression (18), i.e., the amount of fission spectrum and Fermi spectrum (~ 1/ [E.sub.n]).