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Evolution of Approaches to Safe Handling of Explosives

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含能材料 2004年第A2期12卷 581-583页

作者： A.L.Mikhaylov rfnc-VNIIEF Russia

On definition, nuclear weapons (NW) containing fissile and explosive materials are dangerous in terms of radiation release and explosion. In Russia, the problems of nuclear safety of ammunition during accidents are so... 详细信息

关键词：高能炸药安全操作核武器 TNT RDX

On the Solution Accuracy Downstream of Shocks When Using Godunov-Type *** of Errors in One-Dimensional Problems

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Communications in Computational Physics 2023年第8期34卷 749-786页

作者： Alexander V.Rodionov Keldysh Institute of Applied Mathematics Russian Academy of SciencesMoscow125047Russia rfnc–All-Russian Scientific Research Institute of Experimental Physics Sarov607188Russia

The article opens a series of publications devoted to a systematic study of numerical errors behind the shock wave when using high-order Godunov-type schemes,including in combination with the artificial viscosity *** proposed paper describes the numerical methods used in the study,and identifies the main factors affecting the accuracy of the solution for the case of one-dimensional gas dynamic *** physical interpretation of the identified factors is given and their influence on the grid convergence is analyzed.

关键词： Shock-capturing methods Riemann problem WENO reconstruction Runge-Kutta method Hancock-Rodionov method artificial viscosity approach Shu-Osher test problem

Test of Materials for High-power Neutron Target

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Test of Materials for High-power Neutron Target

MAIN TYPES OF EXPLOSIVE OPENING SWITCHES AND THEIR SWITCHING PARAMETERS

The Second Asian Particle Accelerator Conference

作者： M.Avilov K.Gubin N.Kot P.Logatchev P.Martyshkin S.Morozov S.Shiyankov A.Starostenko V.Plokhoi S.Samarin V.Menshenin Y.Kandiev A.Andrighetto L.Stroe L.Tecchio BINP Russia VNIITFRussiaLNL-INFNItaly BINP Russia VNIITFRussiaLNL-INFNItaly BINP Russia VNIITFRussiaLNL-INFNItaly BINP Russia VNIITFRussiaLNL-INFNItaly BINP Russia VNIITFRussiaLNL-INFNItaly BINP Russia VNIITFRussiaLNL-INFNItaly BINP Russia VNIITFRussiaLNL-INFNItaly BINP Russia VNIITFRussiaLNL-INFNItaly BINP Russia VNIITFRussiaLNL-INFNItaly BINP Russia VNIITFRussiaLNL-INFNItaly BINP Russia VNIITFRussiaLNL-INFNItaly BINP Russia VNIITFRussiaLNL-INFNItaly BINP Russia VNIITFRussiaLNL-INFNItaly BINP Russia VNIITFRussiaLNL-INFNItaly BINP Russia VNIITFRussiaLNL-INFNItaly

＜正＞ A number of materials is considered in terms of possibility of high intense neutron target fabrication on the basis of proton *** calculations of neutron yield are presentedfor thick targets made of high temperature carbon-and boron-containing materials as well *** and results of thermo-mechanical test are presented when materials areirradiated by intense electron beam with the energy up to 5 MeV,that simulated the thermal

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MAIN TYPES OF EXPLOSIVE OPENING SWITCHES AND THEIR SWITCHING...

Project of a Fast Neutron Target Based on a 10 MeV, 300 kW Proton Accelerator

The 17th International Conference on High-Power Particle Beams

作者： Volkov G.I. Duday P.V. Ivanov V.A. Mikhailov O.D. Pak S.V. Skobelev A.N. Krayev A.I. rfnc-VNIIEF 607190SarovRussia

＜正＞The results of the research of the switching parameters of three types of explosive current opening switches used for the energy output from the inductive storages to the load in a microsecond time range are *** operation of the current opening switches with foil and ribbed barrier,with foil and barrier the ribs of which have metal patches,and the opening switches on dielectric jet- streams has been studied.

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Project of a Fast Neutron Target Based on a 10 MeV, 300 kW P...

Simulations of ALT-like explosive magnetic devices for ramp compression of materials by magnetically imploded liners

The Second Asian Particle Accelerator Conference

作者： M.Avilov K.Gubin N.Kot P.Logatchev P.Martyshkin S.Morozov S.Shiyankov A.Starostenko A.Andrighetto Y.W.Bao L.Tecchio Ya.Kandiev V.Plokhoi S.Samarin BINP Russia BINP Russia BINP Russia BINP Russia BINP Russia BINP Russia BINP Russia BINP Russia LNL-INFN Italy LNL-INFN Italy LNL-INFN Italy vniitf Russia vniitf Russia vniitf Russia

＜正＞ The project of high intense source of fast neutrons is *** source is based on thetarget irradiated by the proton beam with energy 10 MeV and mean power up to 300 *** of fabrication of such a target are *** hot ...

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Matter and Radiation at Extremes 2020年第4期5卷 16-22页

作者： A.M.Buyko G.G.Ivanova I.V.Morozova FSUE Russian Federal Nuclear Center–All-Russian Research Institute of Experimental Physics(RFNC-VNIIEF)SarovNizhny Novgorod RegionRussia

Revised simulations of ALT-like devices are *** results from these simulations closely match those from experiments and demonstrate the capabilities of the devices as applied to ramp compression of metals to pressures of 20 Mbar by imploding liners driven by∼10 MG azimuthal magnetic fields(with currents up to 55 MA).These results can be applied to the design of experiments on isentropic compression of materials.

关键词： materials. magnetic Simulation

Ionization balance of non-LTE plasmas from an average-atom collisional-radiative model

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Matter and Radiation at Extremes 2022年第6期7卷 3-18页

作者： A.A.Ovechkin P.A.Loboda A.S.Korolev S.V.Kolchugin I.Yu.Vichev A.D.Solomyannaya D.A.Kim A.S.Grushin Russian Federal Nuclear Center Zababakhin All-Russian Research Institute of Technical Physics(RFNC-VNIITF)Chelyabinsk RegionSnezhinskRussia Moscow Engineering Physics Institute(MEPhI) National Research Nuclear UniversityMoscowRussia Keldysh Institute of Applied Mathematics RAS MoscowRussia

We present a simplified version of an average-atom collisional-radiative model employing both local-thermodynamic-equilibrium averageatom and isolated-ion atomic *** simplifications introduced do not lead to any substantial errors,and they significantly speed up calculations compared with the basic average-atom model involving direct solution of the self-consistent-field *** ion charges,charge state distributions,and emission spectra of non-local-thermodynamic-equilibrium(NLTE)gold plasmas calculated using various modifications of the average-atom collisional-radiative model are compared with those obtained using the THERMOS model with the detailed configuration accounting *** also propose an efficient method to calculate thermodynamic functions of NLTE plasmas in the context of the simplified average-atom collisional-radiative model.

关键词： equations radiative thermodynamic