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RESEARCH ABOUT NEUTRINOS DETECTION GENERATED BY NATURAL SOURCES (SUN) AND ARTIFICIAL SOURCES (NUCLEAR REACTORS, TRITIUM)
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Acronym: ASTRONEUTRINOS
Number / Date of the contract: 2-CEx06-10-77 / 26.07.2006
modul 1
Project Manager: Cruceru Ilie
Partners: Bucharest University,Faculty of Physics; National Institute of R&D for Materials of Physics
Starting date / finishing date: 2006-07-26 / 2008-11-10
Project value: 1500000 RON
Abstract: The main objective of project is to verify Weber’s theory according to which the neutrinos suffer coherent scattering on perfect and dense crystals. For this kind of scattering, the total cross section for the interaction is calculated using the crystal parameters and the neutrinos characteristics. Total cross section for sapphire crystal considered as being perfect and infinitely dense is higher for coherent interaction than for the incoherent scattering; therefore the momentum transfer from neutrinos to crystal lattice lead to screening and slowing down of neutrinos. This momentum change works as a force high enough to be detected and measured with a sensible balance arm. Based of the above described hypotheses we will develop some techniques and methods for the detection of neutrinos generated by natural sources from cosmic space (Sun, supernovae) and artificial sources (nuclear reactors from nuclear plants and submarines). Because this type of nuclear particle interacts very weak with matter, the devices for his detection should be very sensitive. In this project we will develop a detection system based on an ultra sensitive torsion balance, having as a main element a very dense crystal such as sapphire or lithium fluoride (LiF). The momentum change on the crystalline lattice will lead to neutrinos wavelength modification; this can be modulated, proving to be a real condition for practical application of modulated neutrinos fluxes in transmission of signals to very long distance as is the case of light modulation. Having in mind this, we will envisage the application of this research in optical and light transmission without high energy loss and with high safety. The obtained results and their practical application are in agreement with the thematic area 11 and in connexion with thematic areas 3, 9 and 10.

THE STAGES OF THE PROJECT AND DELIVERY DATES
1. Theoretical and experimental considerations about neutrinos interaction with the condensed matter. (2006-11-25)
2. Establishing the technical and constructive solution for an ultra sensitive torsion balance with crystal. (2007-06-25)
3. Design and establishing of the functional parameters for the balance. (2007-09-25)
4. Realization of the experimental model for a torsion balance with crystal. (2008-03-25)
5. Testing in neutrinos field of the experimental model of torsion balance (2008-07-25)
6. Processing the experimental data and dissemination of the obtained results (2008-11-25)

RESULTS

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