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Graeger, R.*; Ackermann, D.*; Chelnokov, M.*; Chepigin, V.*; Dllmann, C. E.*; Dvorak, J.*; Even, J.*; Gorshkov, A.*; Heberger, F. P.*; Hild, D.*; et al.
Physical Review C, 81(6), p.061601_1 - 061601_5, 2010/06
Times Cited Count:43 Percentile:90.03(Physics, Nuclear)Ostermeyer, M.*; Kong, H.-J.*; Kovalev, V. I.*; Harrison, R. G.*; Fotiadi, A. A.*; Mgret, P.*; Kalal, M.*; Slezak, O.*; Yoon, J. W.*; Shin, J. S.*; et al.
Laser and Particle Beams, 26(3), p.297 - 362, 2008/09
Times Cited Count:41 Percentile:55.6(Physics, Applied)Dvorak, J.*; Brchle, W.*; Chelnokov, M.*; Dllmann, Ch. E.*; Dvorakova, Z.*; Eberhardt, K.*; Jger, E.*; Krcken, R.*; Kuznetsov, A.*; Nagame, Yuichiro; et al.
Physical Review Letters, 100(13), p.132503_1 - 132503_4, 2008/04
The analysis of a large body of heavy ion fusion reaction data with medium-heavy projectiles (6Z18) and actinide targets suggests a disappearance of the 3 exit channel with increasing atomic number of the projectile. Here, we report a measurement of the excitation function of the reaction Cm(Mg,)Hs and the observation of the new nuclide Hs produced in the 3 evaporation channel at a beam energy well below the Bass fusion barrier with a cross section comparable to the maxima of the 4 and 5 channels. This indicates the possible discovery of new neutron-rich transactinide nuclei using relatively light heavy ion beams of the most neutron-rich stable isotopes and actinide targets.
Dvorak, J.*; Brchle, W.*; Chelnokov, M.*; Dllmann, Ch. E.*; Dvorakova, Z.*; Eberhardt, K.*; Jger, E.*; Krcken, R.*; Kuznetsov, A.*; Nagame, Yuichiro; et al.
Physical Review Letters, 100(13), p.132503_1 - 132503_4, 2008/04
Times Cited Count:123 Percentile:94.86(Physics, Multidisciplinary)Son, N. T.*; Ivanov, I. G.*; Kuznetsov, A. Yu.*; Svensson, B. G.*; Zhao, Q. X.*; Willander, M.*; Morishita, Norio; Oshima, Takeshi; Ito, Hisayoshi; Isoya, Junichi*; et al.
Physica B; Condensed Matter, 401-402, p.507 - 510, 2007/12
Times Cited Count:3 Percentile:17.92(Physics, Condensed Matter)Defects in electron-irradiated (3, 6 MeV) ZnO substrates were investigated using optical detection of magnetic response (ODMR). The shallow donor and the Zn vacancy were detected. In addition, several ODMR centers with S= were also observed. Among these, LU3 and LU4 shows a behavior as recombination centers. After annealing at 400C, both LU3 and LU4 still remain in ZnO substrates.
Son, N. T.*; Ivanov, G.*; Kuznetsov, A.*; Svensson, B. G.*; Zhao, Q. X.*; Willander, M.*; Morishita, Norio; Oshima, Takeshi; Ito, Hisayoshi; Isoya, Junichi*; et al.
Journal of Applied Physics, 102(9), p.093504_1 - 093504_5, 2007/11
Times Cited Count:18 Percentile:56.77(Physics, Applied)Optical detection of magnetic resonance (ODMR) was performed to investigate defects in ZnO irradiated with 3 MeV electrons at room temperature. As a result, the Zn vacancy and some other centers were detected by ODMR. The Zn vacancy and two other centers whish are labeled as LU3 and LU4, were also commonly observed in different types of as-grown ZnO. Therefore, it can be concluded that the both LU3 and LU4 might be related to intrinsic defects, and they act as dominating recombination centers in irradiated and as-grown ZnO.
Dvorak, J.*; Brchle, W.*; Chelnokov, M.*; Dressler, R.*; Dllmann, Ch. E.*; Eberhardt, K.*; Gorshkov, V.*; Jger, E.*; Krcken, R.*; Kuznetsov, A.*; et al.
Physical Review Letters, 97(24), p.242501_1 - 242501_4, 2006/12
Times Cited Count:151 Percentile:96.05(Physics, Multidisciplinary)no abstracts in English
Kuznetsov, S. A.*; Hayashi, Hirokazu; Minato, Kazuo; Gaune-Escard, M.*
Electrochimica Acta, 51(13), p.2463 - 2470, 2006/03
Times Cited Count:88 Percentile:85.88(Electrochemistry)Electrochemical experiments were carried out at 723-823K in order to estimate separation coefficients in LiCl-KCl eutectic melt containing uranium and lanthanum trichlorides. The diffusion coefficients of U(III) were determined by electrochemical methods. The standard rate constants of charge transfer for electroreduction of uranium U(III) +3e=U were calculated by the impedance spectroscopy method. It was shown that for the calculation of uranium and lanthanum separation coefficients it is necessary to determine the voltammetric peak potentials of U(III) and La(III), their concentration in the melt and the kinetic parameters relating to U(III) discharge such as transfer and diffusion coefficients, and standard rate constants of charge transfer.
Kuznetsov, I.*; Shvetsov, Y. E.*; Ashurko, Yu. M.*; Volkov, A. V.*; Kashcheev, M. V.*; Tsykunov, A. G.*; Kamanin, Y. L.*; Bakhmetyev, A. M.*; Zamyatin, V. A.*; Niwa, Hajime; et al.
Proceedings of International Conference on Nuclear Energy System for Future Generation and Global Sustainability (GLOBAL 2005) (CD-ROM), 6 Pages, 2005/10
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Kuznetsov, S. A.*; Hayashi, Hirokazu; Minato, Kazuo; Gaune-Escard, M.*
Journal of Nuclear Materials, 344(1-3), p.169 - 172, 2005/09
Times Cited Count:26 Percentile:84.04(Materials Science, Multidisciplinary)The knowledge of separation coefficients of actinides and rare-earth metals is important for developing pyrometallurgical process of spent nuclear fuel. Electrochemical experiments were carried out at 723-823 K to estimate separation coefficients in LiCl-KCl eutectic melt containing uranium and lanthanum trichlorides. Uranium and lanthanum separation coefficients is calcurated with the voltammetric peak potentials of U (III) and La (III), their concentration in the melt and kinetic parameters for U(III) discharge such as diffusion coefficients, and standard rate constants of charge transfer. The diffusion coefficients of U (III) were determined by some electrochemical measurements. The standard rate constants of charge transfer for electroreduction of uranium U(III) +3e =U were calculated by impedance spectroscopy method.
Kuznetsov, S. A.*; Hayashi, Hirokazu; Minato, Kazuo; Gaune-Escard, M.*
Denki Kagaku Oyobi Kogyo Butsuri Kagaku, 73(8), p.630 - 632, 2005/08
It was shown that contact of oxide materials with LiCl-KCl eutectic melt containing UCl and UCl changes drastically the mechanism of uranium electroreduction. Transformation of voltammograms on addition of oxide ions (LiO) to the melt LiCl-KCl-UCl was studied. Similar changes of voltammetric curves were observed during a long contact of oxide materials with LiCl-KCl-UCl molten system due to appearance of oxide ions in the melt resulting from oxide materials corrosion.
Kuznetsov, S. A.*; Hayashi, Hirokazu; Minato, Kazuo; Gaune-Escard, M.*
Journal of the Electrochemical Society, 152(4), p.C203 - C212, 2005/04
Times Cited Count:104 Percentile:94.56(Electrochemistry)The electrochemical behavior of UCl and UCl dissolved in LiCl-KCl eutectic melt was studied at 723-823 K. Electroreduction of U(IV) in LiCl-KCl melt occurs via two successive steps involving transfer of one and three electrons. The diffusion coefficients of U(IV) and U(III) ions were determined by linear sweep voltammetry, chronopotentiometry, and chronoamperometry. The formal standard potential of EU(IV)/U(III), EU(IV)/U, and EU(III)/U were determined and some thermodynamic properties of UCl and UCl dissolved in LiCl-KCl eutectic melt were calculated. Influence of oxide ions on electrochemical behavior was also studied.