排序方式: 共有9条查询结果,搜索用时 15 毫秒
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D.Yu. Akimov H.M. Araújo E.J. Barnes V.A. Belov A. Bewick A.A. Burenkov R. Cashmore V. Chepel A. Currie D. Davidge J. Dawson T. Durkin B. Edwards C. Ghag A. Hollingsworth M. Horn A.S. Howard A.J. Hughes W.G. Jones G.E. Kalmus A.S. Kobyakin A.G. Kovalenko V.N. Lebedenko A. Lindote I. Liubarsky M.I. Lopes R. Lüscher K. Lyons P. Majewski A.StJ. Murphy F. Neves S.M. Paling J. Pinto da Cunha R. Preece J.J. Quenby L. Reichhart P.R. Scovell C. Silva V.N. Solovov N.J.T. Smith P.F. Smith V.N. Stekhanov T.J. Sumner C. Thorne L. de Viveiros R.J. Walker 《Physics letters. [Part B]》2010
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V. A. Belov E. V. Brakhman O. Ya. Zeldovich A. K. Karelin V. V. Kirichenko A. S. Kobyakin O. M. Kozodaeva A. V. Kuchenkov T. N. Tsvetkova 《Physics of Atomic Nuclei》2013,76(4):397-403
Measurement of the 214Po half-life with the DEVIS track setup at the Institute of Theoretical and Experimental Physics (ITEP, Moscow) by means of a procedure based on determining lifetimes of individual nuclei is described. The value obtained for the 214Po half-life is 163.8 ± 3.0 µs. The possibility of reaching the accuracy of the measurements that is required for testing the statement that the decay of some nuclei has a nonexponential character and the source intensity necessary for this are discussed. 相似文献
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I. Alekseev V. Belov V. Brudanin M. Danilov V. Egorov D. Filosofov M. Fomina Z. Hons A. Kobyakin D. Medvedev R. Mizuk E. Novikov A. Olshevsky S. Rozov N. Rumyantseva V. Rusinov A. Salamatin Ye. Shevchik M. Shirchenko Yu. Shitov A. Starostin D. Svirida E. Tarkovsky I. Tikhomirov E. Yakushev I. Zhitnikov D. Zinatulina 《Physics of Particles and Nuclei Letters》2014,11(4):473-482
DANSSino is a reduced pilot version of a solid-state detector of reactor antineutrinos (to be created within the DANSS project and installed under the industrial 3 GWth reactor of the Kalinin Nuclear Power Plant—KNPP). Numerous tests performed at a distance of 11 m from the reactor core demonstrate operability of the chosen design and reveal the main sources of the background. In spite of its small size (20 × 20 × 100 cm3), the pilot detector turned out to be quite sensitive to reactor antineutrinos, detecting about 70 IBD events per day with the signal-to-background ratio about unity. 相似文献
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Alekseev I. G. Belov V. V. Brudanin V. B. Guzeev G. G. Danilov M. V. Egorov V. G. Zhitnikov I. V. Zinatulina D. R. Kazartsev S. V. Kobyakin A. S. Kuznetsov A. S. Machikhiliyan I. V. Medvedev D. V. Nesterov V. M. Olshevsky A. G. Pogorelov N. A. Ponomarev D. V. Rozova I. E. Rumyantseva N. S. Rusinov V. Yu. Samigullin E. I. Svirida D. N. Skrobova N. A. Starostin A. S. Tarkovsky E. I. Filosofov D. V. Fomina M. V. Khvatov V. A. Chapaev V. M. Shevchik Ye. A. Shirchenko M. V. Shitov Yu. A. 《Physics of Atomic Nuclei》2019,82(5):415-424
Detection of antineutrino by the reaction of the inverse β-decay can be used for an independent monitoring of a nuclear reactor power. DANSS detector is located directly under a commercial WWER-1000 reactor and counts up to 5000 antineutrino per day, providing the accuracy of 1.5% in 2 days of the flux measurement. A powerful system of the passive and active shielding in combination with the fine spatial segmentation of the detector allows to diminish the contribution of the background processes to a level, negligible in comparison to the statistical error. The influence of the nuclear fuel composition on the neutrino flux can be accounted for based on the input from the NPP staff.
相似文献5.
I. G. Alekseev V. V. Belov M. V. Danilov I. V. Zhitnikov A. S. Kobyakin A. S. Kuznetsov I. V. Machikhiliyan D. V. Medvedev V. Yu. Rusinov D. N. Svirida N. A. Skrobova A. S. Starostin E. I. Tarkovsky M. V. Fomina E. A. Shevchik M. V. Shirchenko 《Physics of Particles and Nuclei Letters》2018,15(3):272-283
Apart from monitoring nuclear reactor parameters, the DANSS neutrino experiment is aimed at searching for sterile neutrinos through a detailed analysis of the ratio of reactor antineutrino spectra measured at different distances from the reactor core. The light collection system of the detector is dual, comprising both the vacuum photomultiplier tubes (PMTs) and silicon photomultipliers (SiPMs). In this paper, the techniques developed to calibrate the responses of these photodetectors are discussed in detail. The long-term stability of the key parameters of the detector and their dependences on the ambient temperature are investigated. The results of detector light yield measurements, performed independently with PMTs and SiPMs are reported. 相似文献
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V. A. Belov E. V. Brakchman O. Ya. Zeldovich A. K. Karelin V. V. Kirichenko A. S. Kobyakin O. M. Kozodaeva A. V. Kuchenkov T. N. Tsvetkova 《Physics of Atomic Nuclei》2009,72(9):1421-1425
In the DEVIS tracking experiment that is being performed at the Institute of Theoretical and Experimental Physics (ITEP, Moscow,
Russia) and which is devoted to searches for 136Xe double-beta decay, the 222Rn concentration is measured in xenon samples with different content of the isotope 136Xe. The number of probable double-electron events from 214Bi decay mimicking the double-beta decay of 136Xe is estimated. 相似文献
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M. Horn V.A. BelovD.Yu. Akimov H.M. AraújoE.J. Barnes A.A. BurenkovV. Chepel A. CurrieB. Edwards C. GhagA. Hollingsworth G.E. KalmusA.S. Kobyakin A.G. KovalenkoV.N. Lebedenko A. Lindote M.I. LopesR. Lüscher P. MajewskiA.StJ. Murphy F. Neves S.M. PalingJ. Pinto da Cunha R. PreeceJ.J. Quenby L. ReichhartP.R. Scovell C. SilvaV.N. Solovov N.J.T. SmithP.F. Smith V.N. StekhanovT.J. Sumner C. ThorneL. de Viveiros R.J. Walker 《Physics letters. [Part B]》2011,705(5):471-476
Scintillation and ionisation yields for nuclear recoils in liquid xenon above 10 keVnr (nuclear recoil energy) are deduced from data acquired using broadband Am-Be neutron sources. The nuclear recoil data from several exposures to two sources were compared to detailed simulations. Energy-dependent scintillation and ionisation yields giving acceptable fits to the data were derived. Efficiency and resolution effects are treated using a light collection Monte Carlo, measured photomultiplier response profiles and hardware trigger studies. A gradual fall in scintillation yield below ∼40 keVnr is found, together with a rising ionisation yield; both are in agreement with the latest independent measurements. The analysis method is applied to the most recent ZEPLIN-III data, acquired with a significantly upgraded detector and a precision-calibrated Am-Be source, as well as to the earlier data from the first run in 2008. A new method for deriving the recoil scintillation yield, which includes sub-threshold S1 events, is also presented which confirms the main analysis. 相似文献
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V. V. Dubinina N. P. Egorenkova A. S. Kobyakin E. A. Pozharova N. G. Polukhina V. A. Smirnitskiy N. I. Starkov N. S. Than M. M. Chernyavsky T. V. Shchedrina 《Bulletin of the Lebedev Physics Institute》2016,43(4):148-152
One of the candidates for dark matter particles is the heavy photon. The experiment on the search for these particles using nuclear emulsions irradiated in a positron beam with an energy of 32 GeV is described. Methodical studies for estimating the efficiency of the search for electronpositron pairs and the effective mass determination accuracy are performed. 相似文献
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Measurements performed in searches for the double-beta decay of 136Xe showed an excess of events in exposures of a target enriched in the isotope 136Xe in relation to exposures of a target depleted in this isotope. The activation of xenon in the detector used under the effect of background neutron and muon radiation and the possible contribution of these processes to the results of relevant measurements are studied. 相似文献
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