- Volume 41 Issue 2
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Calculation of Low-Energy Reactor Neutrino Spectra for Reactor Neutrino Experiments
- Riyana, Eka Sapta (Department of Applied Quantum Physics and Nuclear Engineering, Kyushu University) ;
- Suda, Shoya (Department of Applied Quantum Physics and Nuclear Engineering, Kyushu University) ;
- Ishibashi, Kenji (Department of Applied Quantum Physics and Nuclear Engineering, Kyushu University) ;
- Matsuura, Hideaki (Department of Applied Quantum Physics and Nuclear Engineering, Kyushu University) ;
- Katakura, Jun-ichi (Department of Nuclear System Safety Engineering, Nagaoka University of Technology)
- Received : 2015.07.17
- Accepted : 2016.06.13
- Published : 2016.06.30
Background: Nuclear reactors produce a great number of antielectron neutrinos mainly from beta-decay chains of fission products. Such neutrinos have energies mostly in MeV range. We are interested in neutrinos in a region of keV, since they may take part in special weak interactions. We calculate reactor antineutrino spectra especially in the low energy region. In this work we present neutrino spectrum from a typical pressurized water reactor (PWR) reactor core. Materials and Methods: To calculate neutrino spectra, we need information about all generated nuclides that emit neutrinos. They are mainly fission fragments, reaction products and trans-uranium nuclides that undergo negative beta decay. Information in relation to trans-uranium nuclide compositions and its evolution in time (burn-up process) were provided by a reactor code MVP-BURN. We used typical PWR parameter input for MVP-BURN code and assumed the reactor to be operated continuously for 1 year (12 months) in a steady thermal power (3.4 GWth). The PWR has three fuel compositions of 2.0, 3.5 and 4.1 wt%
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