Márquez Damián, J. I. and Granada, J. R. and Baxter, D. V. and Parnell, S. R. and Evans, D. C. (2015) Measurement of the total cross section of heavy water in the 0.1 meV–1 eV energy range at 20 and 50 ◦C. Il nuovo cimento C, 38 (6). pp. 1-5. ISSN 1826-9885
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Abstract
Despite the importance of heavy water as a neutron moderator, there are few measurements of its total neutron cross section for cold and thermal energies, and none of them covers the range of temperature (40–70◦C) used in moderator and reflector tanks in research reactors, and in CANDU nuclear power plants. To cover this deficit, we measured the total cross section of liquid heavy water at 20◦C and 50◦C using the SANS beamline at the LENS facility at Indiana University. The time-of-flight technique was used, in a sample-in/sample-out measurement. The use of the solid methane cold neutron source at LENS allowed measuring in a broad range in energy, from 0.1meV to 1 eV. In this paper we present details of the measurement and processing of the data, and comparison with previous experimental measurements and calculation models. This work is included in the Action Plan of the IAEA Coordinated Research Project “Advanced Moderators for Intense Cold Neutron Beams in Materials Research”.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Thermal neutron cross sections |
| Subjects: | 500 Scienze naturali e Matematica > 530 Fisica |
| Depositing User: | Marina Spanti |
| Date Deposited: | 23 Jun 2020 09:31 |
| Last Modified: | 23 Jun 2020 09:31 |
| URI: | http://eprints.bice.rm.cnr.it/id/eprint/19168 |
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