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**Harvard**

Jonsson, A., Tran, H., Dykin, V. och Pázsit, I. (2012) *Analytical investigation of the properties of the neutron noise induced by vibrating absorber and fuel rods*.

** BibTeX **

@article{

Jonsson2012,

author={Jonsson, Anders and Tran, Hoai Nam and Dykin, Victor and Pázsit, Imre},

title={Analytical investigation of the properties of the neutron noise induced by vibrating absorber and fuel rods},

journal={Kerntechnik},

issn={0932-3902},

volume={77},

issue={5},

pages={371-380},

abstract={Analytical solution methods for the neutron noise in a one-dimensional multi-region system in two-group theory, which have so far been based on the adjoint function technique, are extended here to using the forward Green's function technique. The forward Green's functions were calculated analytically for a noise source in a core surrounded by reflector regions at both sides. It is shown that with symbolic computation methods, the forward Green's function can be used for the calculation of the space- and frequency-dependent noise in the first order approximation for arbitrary noise sources which have an analytical representation. The properties of the induced neutron noise were investigated for vibrations of both absorbers and fuel assemblies, with two representations of the noise sources: a point-like source which corresponds to the vibrations of a fuel rod, and a finite width source which corresponds to vibrations of a fuel assembly The contributions of the components induced by the fluctuations of the various types of macroscopic cross sections in the total noise are also discussed and the information content of the noise in the fast group is explored for the identification of fuel assembly vibrations.},

year={2012},

keywords={dynamic adjoint function},

}

** RefWorks **

RT Journal Article

SR Print

ID 168848

A1 Jonsson, Anders

A1 Tran, Hoai Nam

A1 Dykin, Victor

A1 Pázsit, Imre

T1 Analytical investigation of the properties of the neutron noise induced by vibrating absorber and fuel rods

YR 2012

JF Kerntechnik

SN 0932-3902

VO 77

IS 5

SP 371

OP 380

AB Analytical solution methods for the neutron noise in a one-dimensional multi-region system in two-group theory, which have so far been based on the adjoint function technique, are extended here to using the forward Green's function technique. The forward Green's functions were calculated analytically for a noise source in a core surrounded by reflector regions at both sides. It is shown that with symbolic computation methods, the forward Green's function can be used for the calculation of the space- and frequency-dependent noise in the first order approximation for arbitrary noise sources which have an analytical representation. The properties of the induced neutron noise were investigated for vibrations of both absorbers and fuel assemblies, with two representations of the noise sources: a point-like source which corresponds to the vibrations of a fuel rod, and a finite width source which corresponds to vibrations of a fuel assembly The contributions of the components induced by the fluctuations of the various types of macroscopic cross sections in the total noise are also discussed and the information content of the noise in the fast group is explored for the identification of fuel assembly vibrations.

LA eng

OL 30