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Neutron self-shielding in irradiation channels of small reactors is isotropicKennedy, G. ...In order to predict the self-shielding effect in neutron activation of non-spherical samples in reactor neutron spectra, it is important to know whether the neutron field is sufficiently anisotropic ... to cause significant variations between horizontal and vertical sample orientation or with orientation relative to the direction towards the reactor core. Metal wires with significant neutron self-shielding were irradiated in several channels ofthe SLOWPOKE reactor at Ecole Polytechnique Montreal and the TRIGA reactor at the Jozef Stefan Institute. In all cases, the amount of thermal or epithermal self-shielding was found to be identical, within the experimental uncertainty, regardless of the orientation of the wire, indicating that the neutron field is essentially isotropic. Models used to predict neutron self-shielding need to be adjusted accordingly. In our Monte Carlo model, the tube-shaped neutron source was moved back into the moderator and reflecting materials near the sample location were included, which produced an isotropic neutron field at the sample locationSource: Journal of radioanalytical and nuclear chemistry. - ISSN 0236-5731 (Vol. 291, no. 2, 2012, str. 555-559)Type of material - article, component partPublish date - 2012Language - englishCOBISS.SI-ID - 24906535
source: Journal of radioanalytical and nuclear chemistry. - ISSN 0236-5731 (Vol. 291, no. 2, 2012, str. 555-559)
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Kennedy, G. | |
Chilian, C. | |
Jaćimović, Radojko | 14082 |
Žerovnik, Gašper, fizik | 29546 |
Snoj, Luka, 1981- | 27819 |
Trkov, Andrej | 08557 |
Source: Personal bibliographies
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