Method for monitoring sub-critical reactor reactivity
A reactor and reactivity technology, applied in reactors, nuclear reactor monitoring, climate sustainability, etc., can solve problems that have not yet been precedented in the engineering application of ADS transmutation systems, and achieve the effect of avoiding space effect correction
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[0015] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.
[0016] For a subcritical reactor driven by an external source, the problem of solving the neutron flux density distribution is the definite solution of the inhomogeneous equation expressed by the matrix of the neutron transport equation, namely:
[0017] AΦ 1 = MΦ 1 +S (where, S is an independent external neutron source) (1)
[0018] In the formula, A is the input operator (including leakage, scattering and absorption), M is the multiplication operator, Φ 1 is the neutron flux density (or power) when the source is active, and S is the independent external neutron source.
[0019] Under the simple group approximation, the spatial distribution of the neutron flux density in the reactor is:
[0020]
[0021] Among them, k n is the nth order eigenvalue of the system, k 1 is the maximum eigenvalue of the system, that is, the effective multiplicati...
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