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It is shown computationally that the IGR neutron lifetime depends on the neutron creation location in the core and that the absorbing material of the control rods strongly affects its value. It is shown that the neutron lifetime at the bottom of the core can be approximately 30% longer than at...
The development of approaches to guaranteeing the safety of nuclear power in the Soviet Union and in Russia and the development of safety concepts and the normative base corresponding to them, which rely on international practice, is expounded. The main factors which make it possible to talk...
The development of nuclear power dictates higher requirements for mass-spectrometric instruments. The MTI-350G specialized mass-spectrometric system for isotopic analysis of uranium in the gas phase meets these requirements. The design was developed as part of the concept adopted for building...
Gamma spectrometers with 100 × 100 mm NaI(Tl) and 200 × 100 mm CsI(Tl) crystals for detecting annihilation radiation of β + radionuclides are described. Two spectrometers are located in a surface laboratory and one underground, at a depth of 500 m of water equivalent, in Novorossiisk. The...
Epithermal neutrons are used in boron-neutron-capture therapy to remove multiform glioblastomas and deep-lying melanoma tumors. Thermal neutrons interact with 10 B which is preintroduced as a pharmacological preparation. The reaction products kill malignant tumor cells. A beam of epithermal...
During startup of an RBMK reactor, the reactivity varies from –(4–7)β eff to 0–0.1β eff . Positive reactivity is introduced locally – by extracting control rods. Since the physical dimensions of an RBMK reactor are large, a local change in the properties can produce a large change in...
The mechanisms of mass transfer of noncondensing gases in the first loop of advanced designs of single-block reactors with natural circulation are investigated. A mathematical model is developed to describe the water-chemistry processes in the first loop of a single-block reactor with a built-in...
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