eng Basko, M M Molodtsov, S V Sokolovskii, M V Sharkov, B Yu Hydrodynamic efficiency of energy transfer in experimental targets illuminated with heavy ion beams Accelerators and Storage Rings ITEF-89-45 ITEP-89-45 1989-01-19 http://cds.cern.ch/record/196896 http://cds.cern.ch/record/196896 eng Basko, M M Stopping of fast ions in dense plasmas Detectors and Experimental Techniques ITEF-83-113 ITEP-113 1983-04-26 http://cds.cern.ch/record/146794 http://cds.cern.ch/record/146794 eng Basko, M M Equation of state for metals in the average ion approximation General Theoretical Physics ITEF-82-57 ITEP-57 1982-05-06 http://cds.cern.ch/record/139369 http://cds.cern.ch/record/139369 eng Ossipov, A Basko, D M Kravtsov, V E A super-Ohmic energy absorption in driven quantum chaotic systems Condensed Matter cond-mat/0406172 We consider energy absorption by driven chaotic systems of the symplectic symmetry class. According to our analytical perturbative calculation, at the initial stage of evolution the energy growth with time can be faster than linear. This appears to be an analog of weak anti-localization in disordered systems with spin-orbit interaction. Our analytical result is also confirmed by numerical calculations for the symplectic quantum kicked rotor. 2004 http://cds.cern.ch/record/740147 http://cds.cern.ch/record/740147 eng Basko, D M Kravtsov, V E Dynamic localization and Coulomb blockade in quantum dots under AC pumping Condensed Matter cond-mat/0406500 We study conductance through a quantum dot under Coulomb blockade conditions in the presence of an external periodic perturbation. The stationary state is determined by the balance between the heating of the dot electrons by the perturbation and cooling by electron exchange with the cold contacts. We show that Coulomb blockade peak can have a peculiar shape if heating is affected by dynamic localization, which can be an experimental signature of this effect. 2004-06-22 http://cds.cern.ch/record/820197 http://cds.cern.ch/record/820197 eng Basko, D M Aleiner, I L Altshuler, B L Metal-insulator transition in a weakly interacting many-electron system with localized single-particle states Condensed Matter cond-mat/0506617 We consider low-temperature behavior of weakly interacting electrons in disordered conductors in the regime when all single-particle eigenstates are localized by the quenched disorder. We prove that in the absence of coupling of the electrons to any external bath dc electrical conductivity exactly vanishes as long as the temperatute $T$ does not exceed some finite value $T_c$. At the same time, it can be also proven that at high enough $T$ the conductivity is finite. These two statements imply that the system undergoes a finite temperature Metal-to-Insulator transition, which can be viewed as Anderson-like localization of many-body wave functions in the Fock space. Metallic and insulating states are not different from each other by any spatial or discrete symmetries. We formulate the effective Hamiltonian description of the system at low energies (of the order of the level spacing in the single-particle localization volume). In the metallic phase quantum Boltzmann equation is valid, allowing to find the kinetic coefficients. In the insulating phase, $T<T_c$, we use Feynmann diagram technique to determine the probability distribution function for quantum-mechanical transition rates. The probability of an escape rate from a given quantum state to be finite turns out to vanish in every order of the perturbation theory in electron-electron interaction. Thus, electron-electron interaction alone is unable to cause the relaxation and establish the thermal equilibrium. As soon as some weak coupling to a bath is turned on, conductivity becomes finite even in the insulating phase. 2005-06-23 http://cds.cern.ch/record/845950 http://cds.cern.ch/record/845950 eng Basko, D M Aleiner, I L Altshuler, B L On the problem of many-body localization Condensed Matter cond-mat/0602510 We review recent progress in the study of transport properties of interacting electrons subject to a disordered potential which is strong enough to localize all single-particle states. This review may also serve as a guide to the recent paper by the authors [Annals of Physics (2006), in press]. Here we skip most of the technical details and make an attempt to discuss the physical grounds of the final-temperature metal-insulator transition described in the above-mentioned paper. 2006-02-22 http://cds.cern.ch/record/931224 http://cds.cern.ch/record/931224 engBasko, M MTest Ion Acceleration in the Field of Expanding Planar Electron CloudOther Fields of Physicsphysics/0608151New exact results are obtained for relativistic acceleration of test positive ions in the non-Boltzmann laminar zone of a planar electron sheath evolving from an initially mono-energetic electron distribution. The electron dynamics is analyzed against the background of motionless foil ions. The limiting gamma-factor of accelerated ions is shown to be determined primarily by the values of the ion-electron charge-over-mass ratio and the initial gamma-factor of the accelerated electrons: there exists a critical relationship between these two quantities, which determines whether the ion can overtake the electron front moving with initial electron velocity. It is proven that in reality protons and heavier test ions can never catch up with the electron front; for their maximum energy an appropriate intermediate asymptotic formula is derived. The domain of applicability of the laminar-zone results is analyzed in detail.2006-08-15http://cds.cern.ch/record/978495http://cds.cern.ch/record/978495oai:cds.cern.ch:978495 doi:10.1088/0741-3335/54/5/055003 eng Basko, M M Sasorov, P V Murakami, M Novikov, V G Grushin, A S 1D study of radiation-dominated implosion of a cylindrical tungsten plasma column Other Fields of Physics arXiv:1112.5824 Spectral properties of the x-ray pulses, generated by perfectly uniform cylindrical implosions of tungsten plasma with parameters typical of wire array z-pinches, are investigated under the simplifying assumption that the final stage of the kinetic-to-radiant energy conversion is not affected by the magnetic field. The x-ray emission is shown to be generated within a narrow (sub-micron) radiation-dominated stagnation shock front with a "supercritical" amplitude. The structure of the stagnation shock is investigated by using two independent radiation-hydrodynamics codes, and by constructing an approximate analytical model. The x-ray spectra are calculated for two values of the plasma column mass, 0.3 mg/cm and 6 mg/cm, with a newly developed two-dimensional radiation-hydrodynamics code RALEF-2D. The hard component of the spectrum (with a blackbody-fit temperature of 0.5-0.6 keV for the 6-mg/cm mass) originates from a narrow peak of the electron temperature inside the stagnation shock. The softer main component emerges from an extended halo, where the primary shock radiation is reemitted by colder layers of the imploding plasma. Our calculated x-ray spectrum for the 6-mg/cm tungsten column agrees well with the published Sandia experimental data (Foord et al., 2004, Phys. Rev. Lett., vol. 93, 055002). 2011-12-30 http://cds.cern.ch/record/1410105 10.1088/0741-3335/54/5/055003 http://cds.cern.ch/record/1410105 Comments: 29 pages, 21 figures; reported at the 8th International Conference on Dense Z-pinches (DZP-2011), Biarritz, France, June 5-9, 2011 Comments: 29 pages, 21 figures; reported at the 8th International Conference on Dense Z-pinches (DZP-2011), Biarritz, France, June 5-9, 2011 eng Faik, Steffen Basko, Mikhail M Tauschwitz, Anna Iosilevskiy, Igor Maruhn, Joachim A Dynamics of volumetrically heated matter passing through the liquid-vapor metastable states Other Fields of Physics arXiv:1205.2579 Remaining within the pure hydrodynamic approach, we formulate a self-consistent model for simulating the dynamic behavior of matter passing through metastable states in the two-phase liquid-vapor region of the phase diagram. The model is based on the local criterion of explosive boiling, derived by applying the theory of homogeneous bubble nucleation in superheated liquids. Practical application of the proposed model is illustrated with hydrodynamic simulations of a volumetrically uniformly heated planar layer of fused silica SiO2. Implications for experimentally measurable quantities are briefly discussed. In numerical simulations a newly developed equation of state, based on the well known QEOS model and capable of handling homogeneous mixtures of elements, was used. 2012-05-14 http://cds.cern.ch/record/1448478 http://cds.cern.ch/record/1448478 Comments: 12 pages, 9 figures doi:10.1016/j.hedp.2013.10.002 eng Faik, Steffen Tauschwitz, Anna Basko, Mikhail M Maruhn, Joachim A Rosmej, Olga Rienecker, Tim Novikov, Vladimir G Grushin, Alexander S Creation of a homogeneous plasma column by means of hohlraum radiation for ion-stopping measurements Other Fields of Physics arXiv:1304.7027 In this work, we present the results of two-dimensional radiation-hydrodynamics simulations of a hohlraum target whose outgoing radiation is used to produce a homogeneously ionized carbon plasma for ion-beam stopping measurements. The cylindrical hohlraum with gold walls is heated by a frequency-doubled (\lambda_l = 526.5 \mu m) 1.4 ns long laser pulse with the total energy of E_l = 180 J. At the laser spot, the peak matter and radiation temperatures of, respectively, T ~ 380 eV and T_r ~ 120 eV are observed. X-rays from the hohlraum heat the attached carbon foam with a mean density of \rho_C = 2 mg/cm^3 to a temperature of T ~ 25 eV. The simulation shows that the carbon ionization degree (Z ~ 3.75) and its column density stay relatively stable (within variations of about +-7%) long enough to conduct the ion-stopping measurements. Also, it is found that a special attention should be paid to the shock wave, emerging from the x-ray heated copper support plate, which at later times may significantly distort the carbon column density traversed by the fast ions. 2013-04-29 http://cds.cern.ch/record/1544805 10.1016/j.hedp.2013.10.002 http://cds.cern.ch/record/1544805 Comments: 11 pages, 12 figures engKarpov, S VBasko, A LPopov, A KSlabko, V VGeorge, T FOptics of Nanostructured Fractal Silver ColloidsOther Fields of Physicsphysics/0301081Based on the theory of the optical properties of fractal clusters, which is an operator-based modification of the coupled-dipole method, an alternate solution is proposed for the problem of adequately describing the evolution of optical spectra of any polydisperse silver colloid with particles falling within the range of most characteristic sizes (5 - 30 nm). This is the range over which the results of the application of the well-known methods of classical electrodynamics, including the Mie theory, disagree with experimental data. The effect of variation of the parameters of such media on optical spectra is studied by a numerical simulation, which accounts for particle electrodynamic dipole-dipole interactions. Indeed, such interactions are shown to be a key factor in determining the broadening of the sol absorption spectra during the course of fractal aggregation. A quantitative explanation is given for the reasons for the appearance of individual specific features in the contours of the spectral absorption of different types of silver colloids.2003-01-31http://cds.cern.ch/record/603454http://cds.cern.ch/record/603454oai:cds.cern.ch:603454 eng Basko, D M Hopping between localized Floquet states in periodically driven quantum dots Condensed Matter cond-mat/0307081 The dynamic localization in energy space -- suppression of the absorption of energy from an external microwave field due to quantum interference -- was analyzed recently for a closed quantum dot in the absence of electron-electron interactions. Here a weak interaction is shown to lead to a finite absorption and heating, which may be viewed as hopping between localized Floquet states. The heating rate grows together with the electronic temperature, eventually destroying the localization. 2003-07-03 http://cds.cern.ch/record/627979 http://cds.cern.ch/record/627979 eng Basko, D M Kravtsov, V E Coulomb blockade in quantum dots under AC pumping Condensed Matter cond-mat/0312191 We study conductance through a quantum dot under Coulomb blockade conditions in the presence of an external periodic perturbation. The stationary state is determined by the balance between the heating of the dot electrons by the perturbation and cooling. We analyze two cooling mechanisms: electron exchange with the cold contacts and emission of phonons. Together with the usual linear Ohmic heating of the dot electrons we consider possible effects of dynamic localization. The combination of the abovementioned factors may result in a drastic change of the shape of the Coulomb blockade peak with respect to the usual equilibrium one. 2003-12-08 http://cds.cern.ch/record/690393 http://cds.cern.ch/record/690393