V. I. Kopeikin

Reactor as a source of antineutrinos: Thermal fission energy

Deeper insight into the features of a reactor as a source of antineutrinos is required for making further advances in studying the fundamental properties of the neutrino. The relationship between the thermal power of a reactor and the rate of the chain fission reaction in its core is analyzed.

The Kr2Det project: Search for mass-3 state contribution |Ue3|2 to the electron neutrino using a one-reactor-two-detector oscillation experiment at the krasnoyarsk underground site

AbstractThe main physical goal of the project is to search with reactor antineutrinos for small mixing angle oscillations in the mass parameter region around Δmatm2 ∼ 2.5 × 10−3 eV2 in order to find the element Ue3 of the neutrino mixing matrix or to set a new more stringent constraint. To achieve this, we propose a “one-reactor-two-detector” experiment with two identical antineutrino spectrometers located ∼100 and ∼1000 m from the Krasnoyarsk underground reactor (∼600 m w.e.). In the no-oscillation case, the ratio of measured positron spectra of the

Neutrino Geophysics at Baksan I: Possible Detection of Georeactor Antineutrinos

\bar \nu _e + p \to e^ + + n

Components of antineutrino emission in nuclear reactor

reaction is energy independent. Deviation from a constant value of this ratio is the oscillation signature. In this scheme, results do not depend on the exact knowledge of the reactor power, νe spectra, burnup effects, and target volumes, and an important point that the backgrounds can periodically be measured during reactor off periods. We give a schematic description of the detectors, calculate the neutrino detection rates, and estimate the backgrounds. We also outline the detector monitoring and calibration procedures. We hope that systematic uncertainties will not exceed 0.5% and that the sensitivity of |Ue3|2≈4×10− (at Δm2=2.5×10−3 eV2) can be achieved.

The search for new physics in nonequilibrium reactor-antineutrino energy spectrum

AbstractThe evolution of the reactor-antineutrino spectrum toward equilibrium above the inverse-beta-decay threshold during the reactor operating period and the decay of residual

Neutrino geophysics at baksan: On searches for antineutrinos and radiogenic-heat sources in the interior of the earth

\bar \nu _e