Refine your search:     
Report No.
 - 
Search Results: Records 1-12 displayed on this page of 12
  • 1

Presentation/Publication Type

Initialising ...

Refine

Journal/Book Title

Initialising ...

Meeting title

Initialising ...

First Author

Initialising ...

Keyword

Initialising ...

Language

Initialising ...

Publication Year

Initialising ...

Held year of conference

Initialising ...

Save select records

Journal Articles

Experimental study of the $$^{238}$$U($$^{36}$$S, 3-5$$n$$)$$^{269-271}$$Hs reaction leading to the observation of $$^{270}$$Hs

Graeger, R.*; Ackermann, D.*; Chelnokov, M.*; Chepigin, V.*; D$"u$llmann, C. E.*; Dvorak, J.*; Even, J.*; Gorshkov, A.*; He${ss}$berger, F. P.*; Hild, D.*; et al.

Physical Review C, 81(6), p.061601_1 - 061601_5, 2010/06

 Times Cited Count:39 Percentile:90.22(Physics, Nuclear)

Journal Articles

Trends in stimulated Brillouin scattering and optical phase conjugation

Ostermeyer, M.*; Kong, H.-J.*; Kovalev, V. I.*; Harrison, R. G.*; Fotiadi, A. A.*; M$'e$gret, 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:39 Percentile:56.17(Physics, Applied)

Journal Articles

Observation of the 3$$n$$ evaporation channel in the complete hot-fusion reaction $$^{26}$$Mg + $$^{248}$$Cm leading to the new superheavy nuclide $$^{271}$$Hs

Dvorak, J.*; Br$"u$chle, W.*; Chelnokov, M.*; D$"u$llmann, Ch. E.*; Dvorakova, Z.*; Eberhardt, K.*; J$"a$ger, E.*; Kr$"u$cken, 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 (6$$leq$$Z$$leq$$18) and actinide targets suggests a disappearance of the 3$$n$$ exit channel with increasing atomic number of the projectile. Here, we report a measurement of the excitation function of the reaction $$^{248}$$Cm($$^{26}$$Mg,$$xn$$)$$^{274-x}$$Hs and the observation of the new nuclide $$^{271}$$Hs produced in the 3$$n$$ evaporation channel at a beam energy well below the Bass fusion barrier with a cross section comparable to the maxima of the 4$$n$$ and 5$$n$$ 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.

Journal Articles

Observation of the 3$$n$$ evaporation channel in the complete hot-fusion reaction $$^{26}$$Mg+$$^{248}$$Cm leading to the new superheavy nuclide $$^{271}$$Hs

Dvorak, J.*; Br$"u$chle, W.*; Chelnokov, M.*; D$"u$llmann, Ch. E.*; Dvorakova, Z.*; Eberhardt, K.*; J$"a$ger, E.*; Kr$"u$cken, R.*; Kuznetsov, A.*; Nagame, Yuichiro; et al.

Physical Review Letters, 100(13), p.132503_1 - 132503_4, 2008/04

 Times Cited Count:109 Percentile:94.79(Physics, Multidisciplinary)

Journal Articles

Magnetic resonance studies of defects in electron-irradiated ZnO substrates

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:18.97(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=$$frac{1}{2}$$ were also observed. Among these, LU3 and LU4 shows a behavior as recombination centers. After annealing at 400$$^{circ}$$C, both LU3 and LU4 still remain in ZnO substrates.

Journal Articles

Recombination centers in as-grown and electron-irradiated 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:16 Percentile:55.33(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.

Journal Articles

Doubly magic nucleus $$^{270}_{108}$$Hs$$_{162}$$

Dvorak, J.*; Br$"u$chle, W.*; Chelnokov, M.*; Dressler, R.*; D$"u$llmann, Ch. E.*; Eberhardt, K.*; Gorshkov, V.*; J$"a$ger, E.*; Kr$"u$cken, R.*; Kuznetsov, A.*; et al.

Physical Review Letters, 97(24), p.242501_1 - 242501_4, 2006/12

 Times Cited Count:141 Percentile:96.13(Physics, Multidisciplinary)

no abstracts in English

Journal Articles

Electrochemical transient techniques for determination of uranium and rare-earth metal separation coefficients in molten salts

Kuznetsov, S. A.*; Hayashi, Hirokazu; Minato, Kazuo; Gaune-Escard, M.*

Electrochimica Acta, 51(13), p.2463 - 2470, 2006/03

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.

Journal Articles

Results of studies on safety of the BN-600 reactor with hybrid core for the purpose of weapons Pu disposition

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

None

Journal Articles

Determination of uranium and rare-earth metals separation coefficients in LiCl-KCl melt by electrochemical transient techniques

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:24 Percentile:84.12(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.

Journal Articles

The Influence of oxide ions on the electrochemical behavior of UCl$$_4$$ and UCl$$_3$$ in a LiCl-KCl eutectic melt

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$$_4$$ and UCl$$_3$$ changes drastically the mechanism of uranium electroreduction. Transformation of voltammograms on addition of oxide ions (Li$$_2$$O) to the melt LiCl-KCl-UCl$$_4$$ was studied. Similar changes of voltammetric curves were observed during a long contact of oxide materials with LiCl-KCl-UCl$$_4$$ molten system due to appearance of oxide ions in the melt resulting from oxide materials corrosion.

Journal Articles

Electrochemical behavior and some thermodynamic properties of UCl$$_4$$ and UCl$$_3$$ dissolved in a LiCl-KCl eutectic melt

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:87 Percentile:93.34(Electrochemistry)

The electrochemical behavior of UCl$$_4$$ and UCl$$_3$$ 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 E$$^*$$U(IV)/U(III), E$$^*$$U(IV)/U, and E$$^*$$U(III)/U were determined and some thermodynamic properties of UCl$$_4$$ and UCl$$_3$$ dissolved in LiCl-KCl eutectic melt were calculated. Influence of oxide ions on electrochemical behavior was also studied.

12 (Records 1-12 displayed on this page)
  • 1