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- Title
The use of new resonance integrals for determining the parameters of the epithermal neutron spectrum.
- Authors
Khil'manovich, A. M.; Korbut, T. N.; Korneev, S. V.; Martsynkevich, B. A.; Fokov, A. Yu.
- Abstract
A simple method for determining parameters α and b in the presentation of the epithermal neutron spectrum in the form of φepi( E) = b/E1 + α using expansion of function φepi( E) in Taylor series with respect to parameter α is described. The problem of determining the parameters is reduced to finding a solution to a system of algebraic equations. The approximation used describes the spectrum with an adequate accuracy up to energies of ∼1–50 keV, depending on value α ∼ 0.2−0.1, with the help of the first two or three expansion terms (resonance integrals), respectively. The first two resonance integrals for reactions 197Au( n, γ)198Au and 55Mn( n, γ)56Mn are estimated. The measured rates of the appropriate reactions and the values of parameters α and b for the case of an assembly with a graphite moderator are presented.
- Subjects
NEUTRONS; ALGEBRA; EQUATIONS; RESONANCE integral (Nuclear physics); GRAPHITE
- Publication
Instruments & Experimental Techniques, 2009, Vol 52, Issue 3, p333
- ISSN
0020-4412
- Publication type
Article
- DOI
10.1134/S002044120903004X