Zobrazeno 1 - 10
of 530
pro vyhledávání: '"J. N. Abdurashitov"'
Autor:
Alan K. Thompson, Kevin J. Coakley, J. N. Abdurashitov, David M. Gilliam, Dominic F. Vecchia, V. N. Gavrin, Jeffrey S. Nico, B. M. Fisher, V. E. Yants, A. A. Shikhin
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 646:126-134
We report on the development of a fast neutron detector using a liquid scintillator doped with enriched Li-6. The lithium was introduced in the form of an aqueous LiCl micro-emulsion with a di-isopropylnaphthalene-based liquid scintillator. A Li-6 co
Autor:
Alan K. Thompson, J. N. Abdurashitov, A. A. Shikhin, V. L. Matushko, V. N. Gavrin, Jeffrey S. Nico, V. E. Yants, I. E. Veretenkin
Publikováno v:
Physics of Atomic Nuclei. 70:133-139
We discuss the development of a spectrometer based on full energy absorption using liquid scintillator doped with enriched 6Li. Of specific interest, the spectrometer is expected to have good pulse height resolution, estimated to lie in the range 10
Autor:
V. E. Yants, Jeffrey S. Nico, G. T. Zatsepin, V. M. Vermul, N. G. Khairnasov, A. A. Shikhin, T. V. Ibragimova, E. P. Veretenkin, J. F. Wilkerson, V. N. Gavrin, A. V. Kalikhov, I. N. Mirmov, W. A. Teasdale, J. N. Abdurashitov, Steven Elliott, V. V. Gorbachev, B. T. Cleveland, P. P. Gurkina, T. J. Bowles, S. V. Girin, T. V. Knodel
Publikováno v:
Nuclear Physics B - Proceedings Supplements. 118:39-46
Combined analysis of the data of 92 runs of SAGE during the 12-year period January 1990 through December 2001 gives a capture rate of solar neutrinos with energy more than 233 keV of 70.9 −5.2 +5.3 (stat.) −3.2 +3.7 (syst.) SNU. This represents o
Autor:
T. V. Knodel, Raymond Davis, J. N. Abdurashitov, T. J. Bowles, A. V. Kalikhov, D. L. Wark, E. P. Veretenkin, P. Wildenhain, Jeffrey S. Nico, Steven Elliott, N. G. Khairnasov, K. Lande, V. M. Vermul, I. N. Mirmov, T. V. Ibragimova, W. A. Teasdale, J. F. Wilkerson, V. V. Gorbachev, B. T. Cleveland, V. E. Yants, P. P. Gurkina, G. T. Zatsepin, Michael Cherry, A. A. Shikhin, V. N. Gavrin, S. V. Girin
Publikováno v:
Physics of Atomic Nuclei. 65:2156-2160
The solar neutrino capture rate measured by the Russian-American Gallium Experiment on a metallic gallium target SAGE during the time from January 1990 through December 2000 is 77.0 −6.2 −3.0 +6.2 +3.5 SNU, where the uncertainties are statistical
Autor:
N. G. Khairnasov, T. J. Bowles, A. A. Shikhin, P. P. Gurkina, A. V. Kalikhov, V. M. Vermul, T. V. Knodel, J. N. Abdurashitov, S. V. Girin, V. N. Gavrin, V. E. Yants, E. P. Veretenkin, I. N. Mirmov, W. A. Teasdale, Jeffrey S. Nico, B. T. Cleveland, G. T. Zatsepin, Steven Elliott, T. V. Ibragimova, J. F. Wilkerson, V. V. Gorbachev
Publikováno v:
Journal of Experimental and Theoretical Physics. 95:181-193
We present measurements of the solar neutrino capture rate on metallic gallium in the Soviet-American gallium experiment (SAGE) over a period of slightly more than half the 22-year solar cycle. A combined analysis of 92 runs over the twelve-year peri
Autor:
J. N. Abdurashitov, V. N. Gavrin, V. E. Yants, A. V. Kalikhov, O. S. Zaborskaia, A. A. Shikhin, V. L. Matushko
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 476:322-326
The principle of operation, design, registration system and main characteristics of a fast neutron spectrometer are described. The spectrometer is intended for direct measurements of ultra low fluxes of fast neutrons. It is sensitive to neutron fluxe
Autor:
A. V. Kalikhov, J. N. Abdurashitov, J M. Adams, V. N. Gavrin, V. E. Yants, Jeffrey S. Nico, V. L. Matushko, O. S. Zaborskaia, A. A. Shikhin, Alan K. Thompson
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 476:318-321
We discuss the possibility to create a spectrometer of full absorption based on liquid scintillator doped with enriched 6 Li. Of specific interest, the spectrometer will have energy resolution estimated to lie in the range 5–10% for 14 MeV neutrons
Autor:
A. A. Shikhin, V. N. Gavrin, J. N. Abdurashitov, V. E. Yants, I. N. Mirmov, B. T. Cleveland, V. V. Gorbachev, T. V. Ibragimova
Publikováno v:
Instruments and Experimental Techniques. 54:156-158
The parameters of the gas mixture for the proportional counters have been optimized using calibrations with 55Fe and Cd-Se sources. As a result, the accuracy in determining the energy region of 71Ge decays detected in the SAGE experiment with the aim
Autor:
V. E. Yantz, A.A. Smolnikov, A. A. Shikhin, A. A. Klimenko, A. V. Kalikhov, O. S. Zaborskaya, J. N. Abdurashitov, V. N. Gavrin, S. B. Osetrov, S. I. Vasiliev
Publikováno v:
Physics of Atomic Nuclei. 63:1276-1281
The fast-neutron flux in one of the deep underground facilities situated at a depth of 4900 mwe in the Baksan Neutrino Observatory are measured. The relative neutron-shielding properties of several commonly available natural materials are also invest
Autor:
V. N. Gavrin, A. V. Kalikhov, J. N. Abdurashitov, Steven Elliott, Raymond Davis, G. T. Zatsepin, T. V. Knodel, A. A. Shikhin, E. P. Veretenkin, Michael Cherry, T. V. Ibragimova, I. N. Mirmov, N. G. Khairnasov, J. F. Wilkerson, W. A. Teasdale, T. J. Bowles, P. Wildenhain, V. V. Gorbachev, V. E. Yants, K. Lande, D. L. Wark, Jeffrey S. Nico, V. M. Vermul, B. T. Cleveland, S. V. Girin
Publikováno v:
Physics of Atomic Nuclei. 63:943-950
The solar-neutrino-capture rate measured by the Russian-American Gallium Experiment on metallic gallium during the period from January 1990 to December 1997 is (67.2 −7.0−3.0 +7.2+3.5 ) SNU, where the uncertainties are statistical and systematic,