Determination of the neutron flux and γ radiation in the core of operating and shut-down reactors using quartz glasses and ... View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2008-09

AUTHORS

M. A. Mussaeva, E. M. Ibragimova, N. M. Mukhamedshina, M. I. Muminov, S. A. Baitelesov, A. A. Dosimbaev

ABSTRACT

The neutron fluxes and the intensity of γ radiation are measured in 26 channels of a VVR-SM reactor and its thermal column. The fast neutron fluxes in the channels are determined using Ni, Fe, Co, Au, and Mn element monitors with different threshold energies, together with a theoretical calculation using the MCNP-4C program. The energy distribution of the neutron flux inside the fuel assembly is obtained for selected channels around the core. The flux of neutrons with energies >1 MeV is in the range (0.5–43)·1012 cm−2sec−1, depending on the location of the channel. A linear correlation is discovered between the induced optical absorption at the 215 nm line (E′ center) of SiO2–BaO glass and the fast neutron flux in the channels. The γ-ray intensity in the thermal channel is estimated for the reactor during operation (∼38.4 Gy/sec) and 24 hours after it is shut down (∼24.7 Gy/sec) using the E′ centers induced in pure quartz glasses. The observed difference in the efficiency with which oxygen defects are formed during dry and wet irradiation of glass owing to the radiolysis of water must be taken into account when developing radiation technology and during the burial of radioactive waste. More... »

PAGES

208-213

Journal

TITLE

Atomic Energy

ISSUE

3

VOLUME

105

Author Affiliations

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/s10512-008-9086-x

DOI

http://dx.doi.org/10.1007/s10512-008-9086-x

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1016366633


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