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1.
D. Fong J. H. Hamilton A. V. Ramayya J. K. Hwang C. Goodin K. Li J. Kormicki J. O. Rasmussen Y. X. Luo S. C. Wu I. Y. Lee A. V. Daniel G. M. Ter-Akopian G. S. Popeko A. S. Fomichev A. M. Rodin Yu. Ts. Oganessian M. Jandel J. Kliman L. Krupa J. D. Cole M. A. Stoyer R. Donangelo W. C. Ma 《Physics of Atomic Nuclei》2006,69(7):1161-1167
The hot bimodal fission of 252Cf is reexamined with new high-statistics data. We constructed a γ-γ-γ coincidence cube for binary fission and LCP-gated γ-γ matrix for ternary fission. By identifying the secondary fission fragments from their γ-ray transitions, we measured the yields for various fission splits. The normal neutron yield distribution is found to be
Gaussian for Xe-Ru. However, the binary fission split of Ba-Mo is found to exhibit a bimodal neutron distribution with the
“hot mode” corresponding to ≈3.1% of the total yield. In α ternary fission, the first measurements of yields for specific fission splits are presented. The Te-α-Ru and Xe-α-Mo neutron yields fit well with a single mode, but the Ba-α-Zr split shows evidence for an enhanced hot mode with an intensity of ≈13.8% of the normal mode.
The text was submitted by the authors in English. 相似文献
2.
V. A. Rodin 《Mathematical Notes》1992,52(2):863-865
Translated from Matematicheskie Zametki, Vol. 52, No. 2, pp. 152–154, August, 1992. 相似文献
3.
G. M. Ter-Akopian A. V. Daniel A. S. Fomichev G. S. Popeko A. M. Rodin Yu. Ts. Oganessian J. H. Hamilton A. V. Ramayya J. Kormicki J. K. Hwang D. Fong P. Gore J. D. Cole M. Jandel J. Kliman L. Krupa J. O. Rasmussen I. Y. Lee A. O. Macchiavelli P. Fallon M. A. Stoyer R. Donangelo S. -C. Wu W. Greiner 《Physics of Atomic Nuclei》2004,67(10):1860-1865
Ternary fission of 252Cf was studied at Gammasphere using eight ΔE×E particle telescopes. Helium, beryllium, boron, and carbon light charged particles (LCPs) emitted with kinetic energy more than 9, 21, 26, and 32 MeV, respectively, were identified. The 3368-keV γ transition from the first 2+ excited state in 10Be was found and the population probability ratio N(2+)/N(0+) = 0.160 ± 0.025 was estimated. No evidence was found for 3368-keV γ rays emitted from a triple molecular state. For the first time, charge distributions are obtained for ternary fission fragments emitted with helium, beryllium, and carbon LCPs. 相似文献
4.
Yu. S. Sarkisov I. G. Zenkevich A. A. Rodin K. A. V'yunov V. B. Bakhmendo 《Chemistry of Heterocyclic Compounds》1988,24(6):600-606
The principles of the fragmentation of the simplest glycidyl and thioglycidyl ethers under the influence of electron impact, which were discovered by comparison of the spectra of homologs using data from photoelectronic spectroscopy and optical mass spectrometry, are examined as a manifestation of the general characteristics of the fragmentation of bifunctional compounds.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 6, pp. 739–745, June, 1988. 相似文献
5.
The principles of benzene hydrogenation have been studied with sulfide catalysts NI/MS2, Ni/SiO2, M/SiO2 and (Ni, M)/SiO2 (M=Mo, W) obtained via metal complex precursors or by impregnation. In bimetallic catalysts active sites of benzene hydrogenation are formed upon reduction of the active component for thiophene hydrogenolysis.
Ni/MS2, Ni/SiO2, M/SiO2, (Ni,M)/SiO2, M=Mo W, , . , .相似文献
6.
V. N. Rodin A. N. Startsev V. I. Zaikovskii Yu. I. Yermakov 《Reaction Kinetics and Catalysis Letters》1986,32(2):419-421
Nonadditive increase in the activity of sulfided (Ni–Nb)/SiO2 catalysts, compared to Nb/SiO2 and Ni/SiO2, has been found, with the maximum synergetic effect observed at the atomic ratio =Ni/Ni+Nb=0.2.
(Ni–Nb)/SiO2 Nb/SiO2 Ni/SiO2, =Ni/(Ni+Nb)=0,2.相似文献
7.
V. A. Rodin 《Analysis Mathematica》1992,18(4):295-305
Пустьf— интегрируем ая на группе \(G = \mathop \prod \limits_{k = 0}^\infty Z(p_k )\) функция и lim supp k <∞. Дана характериза ция точекμ-сильной сумми руемости ряда Фурье ф ункцииf по системе Прайса. Это позволило установит ь слабый тип (1,1) мажоран тных операторов, связанны х с ВМО-сильнымн средними рядов по сис темам Крестенсонаp k ≡p и Уолшаp k ≡2. Как следствие, для частных сумм рядов по этим системам получе но: еслиf∈L [0, 1], то для любой конс тантыA>0 справедливо $$\mathop {\lim }\limits_{n \to \infty } \frac{1}{n}\mathop \sum \limits_{k = 0}^{n - 1} \exp A|s_k (f,x) - f(x)| = 1$$ для почти всехx∈[0,1]. Тем самым установлена справедливость гипо тезы В. Тотика для этих систем. 相似文献
8.
V. N. Rodin B. M. Reddy V. V. Rao A. V. Kalinkin A. N. Startsev 《Reaction Kinetics and Catalysis Letters》1989,40(1):71-76
The activity of sulfide catalysts MI/SiO2, MI/WS2, (MI,W)/SiO2 and (Ni,MII)/SiO2 (MI is a first row transition metal, and MII=Nb, Mo, W or Re) in the thiophene hydrogenolysis reaction has been studied. Activities of mono- and bimetallic catalysts are found to change in the same manner depending upon the nature of MI. The formation of a sulfide bimetallic species (SBMS) is suggested.
MI/SiO2, MI/WS2, (MI,W)/SiO2 (Ni, MII)/SiO2, MI — , MII–Nb, Mo, W, Re. - MI. .相似文献
9.
J. I. Gorina G. A. Kaljuzhnaia M. V. Golubkov V. V. Rodin T. A. Romanova N. N. Sentjurina S. G. Chernook 《Crystallography Reports》2016,61(2):315-319
A comprehensive analysis of the evolution of the structural and superconducting properties of FeSe crystals stored in air for several years has been performed. It is established that the structure and phase composition of the samples remained invariable, while the superconducting parameters significantly degraded. These changes may be due to the stress relaxation or redistribution of defects in the samples. 相似文献
10.
K. E. Kovaleva A. O. Rodin D. A. Podgorny 《Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques》2016,10(2):365-369
We study the effect of gallium-containing aqueous solutions on polycrystalline aluminum. The procedure for kinetic studies of the selected system is described. It is found that in the reaction of polycrystalline aluminum with gallium-containing aqueous solutions, gallium penetrates along the aluminum grain boundaries, which, upon the application of external stress, leads to failure of the sample. It is found that gallium can penetrate along the aluminum grain boundaries both in the liquid and solid state; the rates of penetration of gallium in the liquid and solid states are determined. 相似文献