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B. T. Boiko V. R. Kopach N. G. Krushedol'skaya P. A. Panchekha Yu. L. Pozdeev V. V. Starikov 《Russian Physics Journal》1991,34(1):35-39
In this work we demonstrate the influence of interphase interaction processes, taking place at the layer boundaries during vacuum annealing of Ta-Ta2O5 sandwiches, on the asymmetry of the electrical conductivity of Ta2O5 films. These processes are demonstrated to be local in nature.Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 1, pp. 46–50, January, 1991. 相似文献
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P. Singer M. Mutterer Yu. N. Kopach M. Klemens A. Hotzel D. Schwalm P. Thirolf M. Hesse 《Zeitschrift für Physik A Hadrons and Nuclei》1997,359(1):41-45
An experiment was performed on prompt γ-ray emission in binary and α-particle accompanied spontaneous fission of 252 C f using the Darmstadt-Heidelberg 4π NaI Crystal Ball spectrometer. The enhancement in γ-ray yield, denoted as the “high-energy component”, which appears between 3.5 and 8 MeV and in the region of near-symmetric fragment mass splits, was observed to be equally pronounced in both fission modes. Analyzing the fragment mass dependence of the mean γ-ray multiplicity in both fission modes clearly identifies the disintegration of equilibrated fission fragments in a narrow mass range around the double-magic 132Sn as the source of these γ-rays. 相似文献
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Yu. V. Pyatkov D. V. Kamanin Yu. N. Kopach A. A. Alexandrov I. A. Alexandrova S. B. Borzakov Yu. N. Voronov V. E. Zhuchko E. A. Kuznetsova Ts. Panteleev A. N. Tyukavkin 《Physics of Atomic Nuclei》2010,73(8):1309-1316
Investigation of the 235U(n th, f) reaction using the miniFOBOS double-arm time-of-flight spectrometer of fission fragments confirmed manifestations of the earlier unknown many-body, at least ternary, decay involving almost collinear decay-product escape, which were first observed in the spontaneous fission of 252Cf(sf). The use of variables sensitive to the nuclear charge of fission fragments allowed the reliability of identification of decay events to be increased and new decay modes to be revealed. 相似文献
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N. A. Gundorin Sh. S. Zeinalov Yu. N. Kopach A. B. Popov V. I. Furman 《Physics of Particles and Nuclei》2016,47(4):681-701
We review the experimental results on the P-even and P-odd angular correlations of fission fragments in the fission of the 235U and 239Pu nuclei induced by unpolarized and polarized resonance neutrons, and on the TRI and ROT effects in the ternary and binary fission of actinides induced by polarized thermal neutrons. Also reported are the measured yields of prompt and delayed neutrons per fission event. The experimental data are analyzed within a novel theoretical framework developed by the JINR—RNC KI Collaboration, whereby the reduction of the multidimensional phase space of fission fragments to the JπK-channel space is consistently validated and the role of resonance interference in the observed correlation effects is revealed. 相似文献
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D. N. Grozdanov F. A. Aliyev C. Hramco Yu. N. Kopach V. M. Bystritsky V. R. Skoy N. A. Gundorin I. N. Ruskov 《Physics of Particles and Nuclei Letters》2018,15(2):157-163
A series of experiments has been conducted at the Frank Laboratory of Neutron Physics (FLNP) of the Joint Institute for Nuclear Research (JINR) in order to study the possibility of determining the moisture content of coke using a standard neutron source. The proposed method is based on a measurement of the spectrum of prompt γ rays emitted when samples are irradiated by fast and/or thermal neutrons. The moisture content is determined from the area of the peaks of characteristic γ rays produced in the radiative capture of thermal neutrons by the proton (Eγ = 2.223 MeV) and inelastic scattering of fast neutrons by 16O (Eγ = 6.109 MeV). The 239Pu–Be neutron source (〈E n 〉 ~ 4.5 MeV) with an intensity of ~5 × 106 n/s was used to irradiate the samples under study. A scintillation detector based on a BGO crystal was used to register the characteristic γ radiation from the inelastic fast neutron scattering and slow (thermal) neutron capture. This paper presents the results of humidity measurement in the range of 2–50% [1, 2]. 相似文献