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Search Results: 1 - 10 of 87762 matches for " I. Machulin "
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Looking for antineutrino flux from $^{40}$K with large liquid scintillator detector
V. V. Sinev,L. B. Bezrukov,E. A. Litvinovich,I. N. Machulin,M. D. Skorokhvatov,S. V. Sukhotin
Physics , 2014, DOI: 10.1134/S1063779615020173
Abstract: We regard the possibility of detecting the antineutrino flux producing by the $^{40}$K placing inside the Earth. Thermal flux of the Earth could be better understood with observing such a flux. Lower and upper limitations on the $^{40}$K antineutrino flux are presented.
Antineutrino-Deuteron Experiment at Krasnoyrsk
Yu. V. Kozlov,S. V. Khalturtsev,I. N. Machulin,A. V. Martemyanov,V. P. Martemyanov,S. V. Sukhotin,V. G. Tarasenkov,E. V. Turbin,V. N. Vyrodov
Physics , 1999, DOI: 10.1134/1.855742
Abstract: This report is represented the results of some experiments, which carried out at the neutrino underground laboratory of Kranoyarsk nuclear plant.
Today and Future Neutrino Experiments at Krasnoyarsk Nuclear Reactor
Yu. V. Kozlov,S. V. Khalturtsev,I. N. Machulin,A. V. Martemyanov,V. P. Martemyanov,A. A. Sabelnikov,V. G. Tarasenkov,E. V. Turbin,V. N. Vyrodov,L. A. Popeko,A. V. Cherny,G. A. Shishkina
Physics , 1999, DOI: 10.1016/S0920-5632(00)00738-6
Abstract: The results of undergoing experiments and new experiment propositions at Krasnoyarsk underground nuclear reactor are presented
Modern Status of Neutrino Experiments at the Underground Neutrino Laboratory of Kurchatov Institute Near Krasnoyarsk Nuclear Reactor
Yu. V. Kozlov,S. V. Khalturtsev,I. N. Machulin,A. V. Martemyanov,V. P. Martemyanov,A. A. Sabelnikov,S. V. Sukhotin,V. G. Tarasenkov,E. V. Turbin,V. N. Vyrodov
Physics , 1998,
Abstract: The investigation of antineutrino-deuteron interaction at Krasnoyarsk reactor are discussed. The characteristics of the installation ''Deuteron'', present results and perspectives of Krasnoyarsk neutrino laboratory are presented.
Search for neutrino oscillations on a long base-line at the CHOOZ nuclear power station
M. Apollonio,A. Baldini,C. Bemporad,E. Caffau,F. Cei,Y. Declais,H. de Kerret,B. Dieterle,A. Etenko,L. Foresti,J. George,G. Giannini,M. Grassi,Y. Kozlov,W. Kropp,D. Kryn,M. Laiman,C. E. Lane,B. Lefievre,I. Machulin,A. Martemyanov,V. Martemyanov,L. Mikaelyan,D. Nicolo,M. Obolensky,R. Pazzi,G. Pieri,L. Price,S. Riley,R. Reeder,A. Sabelnikov,G. Santin,M. Skorokhvatov,H. Sobel,J. Steele,R. Steinberg,S. Sukhotin,S. Tomshaw,D. Veron,V. Vyrodov
Physics , 2003, DOI: 10.1140/epjc/s2002-01127-9
Abstract: This final article about the CHOOZ experiment presents a complete description of the electron antineutrino source and detector, the calibration methods and stability checks, the event reconstruction procedures and the Monte Carlo simulation. The data analysis, systematic effects and the methods used to reach our conclusions are fully discussed. Some new remarks are presented on the deduction of the confidence limits and on the correct treatment of systematic errors.
Limits on Neutrino Oscillations from the CHOOZ Experiment
M. Apollonio,A. Baldini,C. Bemporad,E. Caffau,F. Cei,Y. Declais,H. de Kerret,B. Dieterle,A. Etenko,L. Foresti,J. George,G. Giannini,M. Grassi,Y. Kozlov,W. Kropp,D. Kryn,M. Laiman,C. E. Lane,B. Lefievre,I. Machulin,A. Martemyanov,V. Martemyanov,L. Mikaelyan,D. Nicolo,M. Obolensky,R. Pazzi,G. Pieri,L. Price,S. Riley,R. Reeder,A. Sabelnikov,G. Santin,M. Skorokhvatov,H. Sobel,J. Steele,R. Steinberg,S. Sukhotin,S. Tomshaw,D. Veron,V. Vyrodov
Physics , 1999, DOI: 10.1016/S0370-2693(99)01072-2
Abstract: We present new results based on the entire CHOOZ data sample. We find (at 90% confidence level) no evidence for neutrino oscillations in the anti_nue disappearance mode, for the parameter region given by approximately Delta m**2 > 7 x 10**-4 eV^2 for maximum mixing, and sin**2(2 theta) = 0.10 for large Delta m**2. Lower sensitivity results, based only on the comparison of the positron spectra from the two different-distance nuclear reactors, are also presented; these are independent of the absolute normalization of the anti_nue flux, the cross section, the number of target protons and the detector efficiencies.
Determination of neutrino incoming direction in the CHOOZ experiment and Supernova explosion location by scintillator detectors
M. Apollonio,A. Baldini,C. Bemporad,E. Caffau,F. Cei,Y. Declais,H. de Kerret,B. Dieterle,A. Etenko,L. Foresti,J. George,G. Giannini,M. Grassi,Y. Kozlov,W. Kropp,D. Kryn,M. Laiman,C. E. Lane,B. Lefievre,I. Machulin,A. Martemyanov,V. Martemyanov,L. Mikaelyan,D. Nicolo,M. Obolensky,R. Pazzi,G. Pieri,L. Price,S. Riley,R. Reeder,A. Sabelnikov,G. Santin,M. Skorokhvatov,H. Sobel,J. Steele,R. Steinberg,S. Sukhotin,S. Tomshaw,D. Veron,V. Vyrodov
Physics , 1999, DOI: 10.1103/PhysRevD.61.012001
Abstract: The CHOOZ experiment measured the antineutrino flux at a distance of about 1 Km from two nuclear reactors in order to detect possible neutrino oscillations with squared mass differences as low as 10**-3 eV**2 for full mixing. We show that the data analysis of the electron antineutrino events, collected by our liquid scintillation detector, locates the antineutrino source within a cone of half-aperture of about 18 degrees at the 68% C.L.. We discuss the implications of this experimental result for tracking down a supernova explosion.
Perspectives to measure neutrino-nuclear neutral current coherent scattering with two-phase emission detector
RED Collaboration,D. Yu. Akimov,I. S. Alexandrov,V. I. Aleshin,V. A. Belov,A. I. Bolozdynya,A. A. Burenkov,A. S. Chepurnov,M. V. Danilov,A. V. Derbin,V. V. Dmitrenko,A. G. Dolgolenko,D. A. Egorov,Yu. V. Efremenko,A. V. Etenko,M. B. Gromov,M. A. Gulin,S. V. Ivakhin,V. A. Kantserov,V. A. Kaplin,A. K. Karelin,A. V. Khromov,M. A. Kirsanov,S. G. Klimanov,A. S. Kobyakin,A. M. Konovalov,A. G. Kovalenko,V. I. Kopeikin,T. D. Krakhmalova,A. V. Kuchenkov,A. V. Kumpan,E. A. Litvinovich,G. A Lukyanchenko,I. N. Machulin,V. P. Martemyanov,N. N. Nurakhov,D. G. Rudik,I. S. Saldikov,M. D. Skorokhatov,V. V. Sosnovtsev,V. N. Stekhanov,M. N. Strikhanov,S. V. Sukhotin,V. G. Tarasenkov,G. V. Tikhomirov,O. Ya. Zeldovich
Physics , 2012, DOI: 10.1088/1748-0221/8/10/P10023
Abstract: We propose to detect and to study neutrino neutral current coherent scattering off atomic nuclei with a two-phase emission detector using liquid xenon as a working medium. Expected signals and backgrounds are calculated for two possible experimental sites: Kalinin Nuclear Power Plant in the Russian Federation and Spallation Neutron Source at the Oak Ridge National Laboratory in the USA. Both sites have advantages as well as limitations. However the experiment looks feasible at either location. Preliminary design of the detector and supporting R&D program are discussed.
Light Yield in DarkSide-10: a Prototype Two-phase Liquid Argon TPC for Dark Matter Searches
T. Alexander,D. Alton,K. Arisaka,H. O. Back,P. Beltrame,J. Benziger,G. Bonfini,A. Brigatti,J. Brodsky,L. Cadonati,F. Calaprice,A. Candela,H. Cao,P. Cavalcante,A. Chavarria,A. Chepurnov,D. Cline,A. G. Cocco,C. Condon,D. D'Angelo,S. Davini,E. De Haas,A. Derbin,G. Di Pietro,I. Dratchnev,D. Durben,A. Empl,A. Etenko,A. Fan,G. Fiorillo,K. Fomenko,F. Gabriele,C. Galbiati,S. Gazzana,C. Ghag,C. Ghiano,A. Goretti,L. Grandi,M. Gromov,M. Guan,C. Guo,G. Guray,E. V. Hungerford,Al. Ianni,An. Ianni,A. Kayunov,K. Keeter,C. Kendziora,S. Kidner,V. Kobychev,G. Koh,D. Korablev,G. Korga,E. Shields,P. Li,B. Loer,P. Lombardi,C. Love,L. Ludhova,L. Lukyanchenko,A. Lund,K. Lung,Y. Ma,I. Machulin,J. Maricic,C. J. Martoff,Y. Meng,E. Meroni,P. D. Meyers,T. Mohayai,D. Montanari,M. Montuschi,P. Mosteiro,B. Mount,V. Muratova,A. Nelson,A. Nemtzow,N. Nurakhov,M. Orsini,F. Ortica,M. Pallavicini,E. Pantic,S. Parmeggiano,R. Parsells,N. Pelliccia,L. Perasso,F. Perfetto,L. Pinsky,A. Pocar,S. Pordes,G. Ranucci,A. Razeto,A. Romani,N. Rossi,P. Saggese,R. Saldanha,C. Salvo,W. Sands,M. Seigar,D. Semenov,M. Skorokhvatov,O. Smirnov,A. Sotnikov,S. Sukhotin,Y. Suvorov,R. Tartaglia,J. Tatarowicz,G. Testera,A. Teymourian,J. Thompson,E. Unzhakov,R. B. Vogelaar,H. Wang,S. Westerdale,M. Wojcik,A. Wright,J. Xu,C. Yang,S. Zavatarelli,M. Zehfus,W. Zhong,G. Zuzel
Physics , 2012, DOI: 10.1016/j.astropartphys.2013.08.004
Abstract: As part of the DarkSide program of direct dark matter searches using liquid argon TPCs, a prototype detector with an active volume containing 10 kg of liquid argon, DarkSide-10, was built and operated underground in the Gran Sasso National Laboratory in Italy. A critically important parameter for such devices is the scintillation light yield, as photon statistics limits the rejection of electron-recoil backgrounds by pulse shape discrimination. We have measured the light yield of DarkSide-10 using the readily-identifiable full-absorption peaks from gamma ray sources combined with single-photoelectron calibrations using low-occupancy laser pulses. For gamma lines of energies in the range 122-1275 keV, we get consistent light yields averaging 8.887+-0.003(stat)+-0.444(sys) p.e./keVee. With additional purification, the light yield measured at 511 keV increased to 9.142+-0.006(stat) p.e./keVee.
New limits on heavy sterile neutrino mixing in ${^{8}\rm{B}}$-decay obtained with the Borexino detector
Borexino collaboration,G. Bellini,J. Benziger,D. Bick,G. Bonfini,D. Bravo,M. Buizza Avanzini,B. Caccianiga,L. Cadonati,F. Calaprice,P. Cavalcante,A. Chavarria,A. Chepurnov,D. DAngelo,S. Davini,A. Derbin,I. Drachnev,A. Empl,A. Etenko,K. Fomenko,D. Franco,C. Galbiati,S. Gazzana,C. Ghiano,M. Giammarchi,M. Goger-Neff,A. Goretti,L. Grandi,C. Hagner,E. Hungerford,Aldo Ianni,Andrea Ianni,V. Kobychev,D. Korablev,G. Korga,D. Kryn,M. Laubenstein,T. Lewke,E. Litvinovich,B. Loer,F. Lombardi,P. Lombardi,L. Ludhova,G. Lukyanchenko,I. Machulin,S. Manecki,W. Maneschg,G. Manuzio,Q. Meindl,E. Meroni,L. Miramonti,M. Misiaszek,P. Mosteiro,V. Muratova,L. Oberauer,M. Obolensky,F. Ortica,K. Otis,M. Pallavicini,L. Papp,L. Perasso,S. Perasso,A. Pocar,G. Ranucci,A. Razeto,A. Re,A. Romani,N. Rossi,R. Saldanha,C. Salvo,S. Schonert,H. Simgen,M. Skorokhvatov,O. Smirnov,A. Sotnikov,S. Sukhotin,Y. Suvorov,R. Tartaglia,G. Testera,D. Vignaud,R. B. Vogelaar,F. von Feilitzsch,J. Winter,M. Wojcik,A. Wright,M. Wurm,J. Xu,O. Zaimidoroga,S. Zavatarelli,G. Zuzel
Physics , 2013, DOI: 10.1103/PhysRevD.88.072010
Abstract: If heavy neutrinos with mass $m_{\nu_{H}}\geq$2$ m_e $ are produced in the Sun via the decay ${^8\rm{B}} \rightarrow {^8\rm{Be}} + e^+ + \nu_H$ in a side branch of pp-chain, they would undergo the observable decay into an electron, a positron and a light neutrino $\nu_{H}\rightarrow\nu_{L}+e^++e^-$. In the present work Borexino data are used to set a bound on the existence of such decays. We constrain the mixing of a heavy neutrino with mass 1.5 MeV $\leq m_{\nu_{H}} \le$ 14 MeV to be $|U_{eH}|^2\leq (10^{-3}-4\times10^{-6})$ respectively. These are tighter limits on the mixing parameters than obtained in previous experiments at nuclear reactors and accelerators.
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