Shumakov A.V.,All Russia Research Institute of Automatics VNIIA
Atomic Energy | Year: 2014
The critical regions (parts of space surveyed by a monitor) where it is expedient to use different combinations of detector counts (criteria) are determined. Variants with one, two, and four detectors – to which cases with a large number of detectors reduce – are examined. It is shown that there exist regions, comprising half the controlled space, where the use of additional detectors and criteria is inexpedient. The form and size of these regions depend on the relative arrangement of the detectors. The results obtained can be used to optimize the arrangement of detectors and to reduce the detection thresholds of stationary radiation monitors. © 2014 Springer Science+Business Media New York.
Alkhimova M.A.,National Research Nuclear University MEPhI |
Ananin O.B.,National Research Nuclear University MEPhI |
Bogdanov G.S.,National Research Nuclear University MEPhI |
Vovchenko E.D.,National Research Nuclear University MEPhI |
And 5 more authors.
Physics Procedia | Year: 2015
The source of X-ray radiation with quantum energy in the range hv = 1-0 keV was developed for interaction of x-ray with matter and modification of solid surface. It was based on vacuum spark discharge with laser-triggering. The comprehensive study of X-rays imaging, quantum energy and temporal characteristics was carried out. Correlated estimates of the temperature of the investigated plasma based on moderate powerful vacuum discharge were obtained using the two methods in the case of lowstored energy (E<1 J). © 2015 The Authors.
Yushkov G.Y.,Institute of High Current Electronics |
Nikolaev A.G.,Institute of High Current Electronics |
Frolova V.P.,Institute of High Current Electronics |
Oks E.M.,Tomsk State University of Control Systems and Radioelectronics |
And 2 more authors.
Technical Physics Letters | Year: 2014
An experimental study of the mass-charge composition of a vacuum arc plasma with zirconium cathode saturated with deuterium is carried out. It is shown that this system provides effective generation of deuterium ions with an integral fraction of about 60% per pulse of an arc current. The deuterium content in a vacuum arc plasma is maximum in the initial stage of discharge burning and considerably decreases during the first 150 μs of an arc current pulse. The cathode deuteration also leads to decreasing average ion charge of metallic substrate in the plasma of a vacuum arc discharge. © 2014, Pleiades Publishing, Ltd.
Kosov M.V.,Institute of Theoretical and Experimental Physics |
Kudinov I.V.,All Russia Research Institute of Automatics VNIIA |
Savin D.I.,Moscow Institute of Physics and Technology
EPJ Web of Conferences | Year: 2014
A novel TPT code (Toolkit for Particle Transport), which is included in CHIPS-TPT physics list for Geant4 simulations, is briefly overviewed. Underlying concept of exclusive modelling is introduced and its beneficial features are illustrated with several examples. Widely used neutron Monte Carlo codes, MCNP and Geant4/HP, are based on inclusive algorithms that independently model neutron state change and secondary particles production while tracking. The exclusive approach implemented in TPT overcomes this unphysical separation and makes it possible to allow for kinematic restrictions as well as correlated emission of gamma-rays and secondaries. © Owned by the authors, published by EDP Sciences, 2014.
Solovyev A.S.,All Russia Research Institute of Automatics VNIIA |
Igashov S.Y.,All Russia Research Institute of Automatics VNIIA |
Tchuvil'Sky Y.M.,Moscow State University
Journal of Physics: Conference Series | Year: 2014
A unified microscopic approach based on the algebraic version of the resonating group model has been realized for description of the radiative capture reactions 3H(α, γ)7Li and 3He(α, γ)7Be, which play an important role for modern nuclear astrophysics. The astrophysical S-factors of the reactions and branching ratios between capture to the ground and first excited states of the 7Li and 7Be nuclei have been calculated. The comparison with the most recent experimental data demonstrates a good agreement. © Published under licence by IOP Publishing Ltd.