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Title: Modulation of the neutron field in the multiplying condensed matter and coolant

The spatial damping of acoustic, neutron and thermal branches of oscillations are found in neutron multiplying medium with coolant. All three branches give additive contribution to the neutron density oscillations. However, their wave numbers and coefficients of spatial damping (at the same frequency) differ greatly from the sound with its high phase velocity and small attenuation to the neutron wave with the damping length, which is comparable with its wavelength. A spatial growth of neutron density oscillations is found in the case of large frequency of neutron capture and weak coupling of neutron density and temperature branches of oscillations. This fact is of importance for the noise diagnostics of the multiplying medium with coolant. The results can be applied to the development of the methods of noise diagnostics of the in core reactor equipment.
Authors:
;  [1]
  1. Akhiezer Institute for Theoretical Physics, NSC KIPT, 1 Akademicheskaya Str., 61108 Kharkiv (Ukraine)
Publication Date:
OSTI Identifier:
21371362
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1198; Journal Issue: 1; Conference: 3. conference on statistical physics dedicated to the 100. anniversary of Mykola Bogolyubov, Lviv (Ukraine), 23-25 Jun 2009; Other Information: DOI: 10.1063/1.3284415; (c) 2009 American Institute of Physics
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; 22 GENERAL STUDIES OF NUCLEAR REACTORS; CAPTURE; COMPRESSIBLE FLOW; COOLANTS; DAMPING; HEAT TRANSFER; MODULATION; NEUTRON DENSITY; NEUTRON REACTIONS; NEUTRONS; NUMERICAL ANALYSIS; OSCILLATIONS; PHASE VELOCITY; REACTOR CORES; SOUND WAVES BARYON REACTIONS; BARYONS; ELEMENTARY PARTICLES; ENERGY TRANSFER; FERMIONS; FLUID FLOW; HADRON REACTIONS; HADRONS; MATHEMATICS; NUCLEAR REACTIONS; NUCLEON REACTIONS; NUCLEONS; REACTOR COMPONENTS; VELOCITY