Neutron Noise in Nuclear Reactors; LE BRUIT NEUTRONIQUE DES REACTEURS NUCLEAIRES
The power of a nuclear reactor, in the operating conditions, presents fluctuations due to various causes. This random behavior can be included in the study of "noises." Among other sources of noise, an analysis is made of the fluctuations due: a) to the discontinuous emissions of neutrons from an independent source, and b) to the muitiplication of neutrons inside the reactor. The method which is presented makes use of the analogies between the rules governing a nuclear reactor in operation and a number of radioelectrical systems, in particular the feed-back loops. The reactor can be characterized by its "passing band" and is described as a system submitted to a sequence of random pulses. In nonlinear operating conditions, the effect of neutron noise is defined by means of a nonlinear functional; this theory is thus related to previous works the references of which are given. This leads in the case of nuclear reactors to some results given by A. Blaquiere in the case of radioelectrical loops. (auth)
- Research Organization:
- France. Institut National des Sciences et Techniques Nucleaires, Paris; Warsaw. Technical Univ.
- NSA Number:
- NSA-16-017230
- OSTI ID:
- 4781093
- Report Number(s):
- CEA-1855
- Country of Publication:
- France
- Language:
- English
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