Determination of the radiochemical yield of fission-fragment [sup.99]Mo IN VVR-Ts

The parameters of the neutron flux in the experimental channels of VVR-Ts are determined. It is shown that to evaluate the [sup.99]Mo yield it is necessary to take account of, aside from the neutron flux, the dependence of the fission cross section of [sup.235]U on the temperature of the neutron gas...

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Bibliographic Details
Published in:Atomic energy (New York, N.Y.) N.Y.), 2016-07, Vol.120 (3), p.220
Main Authors: Pozdeev, V.V, Kochnov, O.Yu, Markina, M.A, Grachev, A.F
Format: Article
Language:English
Subjects:
Comparative analysis
Natural gas fields
Nuclear facilities
Nuclear reactors
Uranium
Online Access:Get full text
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Summary:The parameters of the neutron flux in the experimental channels of VVR-Ts are determined. It is shown that to evaluate the [sup.99]Mo yield it is necessary to take account of, aside from the neutron flux, the dependence of the fission cross section of [sup.235]U on the temperature of the neutron gas. The blocking coefficient is calculated for an experimental uranium target. The computed radiochemical yield of [sup.99]Mo is compared with the experimentally measured value. It is shown that the average yield equals 0.75. A correlation is found between the neutron flux density, which is directly proportional to the power of the VVR-Ts nuclear reactor, at the target location and the radiochemical yield of [sup.99]Mo.
ISSN:1063-4258
1573-8205
DOI:10.1007/s10512-016-0121-z