Zobrazeno 1 - 10
of 26
pro vyhledávání: '"O.V. Chumanova"'
Autor:
V. S. Kulikauskas, Yu.N. Zhukova, A. A. Bednyakov, O.V. Chumanova, G.A. Iferov, I.I. Rasgulyaev, V.Ya. Chumanov
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 115:168-172
Experimental results are presented on the exit angle dependence of the energy loss of H 2 + and OH + molecular ions transmitted through a thin gold target in the energy range of 50–200 keV. We have not found any noticeable angular dependence of the
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 111:221-228
The impact parameter dependence of the electronic mean energy loss and energy loss straggling is calculated for fast proton collisions with noble gas atoms. The independent electron model using the Hartree-Slater potential is used for the description
Autor:
N.M. Kabachnik, O.V. Chumanova
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 93:227-233
The impact parameter dependence of electronic energy loss of fast ions in ion-atom collisions is studied theoretically. Effects of screening of the nuclear charge of the ion by its own electrons are discussed. Besides the pure electrostatic screening
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 48:43-46
The experimental data on the ejection angle dependence of the energy loss for He ions in a thin Au foil are discussed. The ion energies vary from 200 to 1000 keV. The results are analysed by the Monte Carlo method with allowance for the change of the
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 83:591-593
The impact parameter dependence of the straggling in electronic energy loss of fast protons in collisions with many-electron atoms is calculated within the semiclassical approximation and the independent electron model with Hartree-Slater potential.
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Publikováno v:
physica status solidi (b). 155:289-294
The local electron density approximation is used to calculate the position and value of the maximum in the proton stopping cross-section for gases and solids. The electron density of atoms in gases is calculated using the Hartree-Fock-Slater approxim
Autor:
A. A. Bednyakov, Yu.N. Zhukova, V.Ya. Chumanov, A.F. Tulinov, G.A. Iferov, V.A. Khodyrev, O.V. Chumanova
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 13:146-151
The integral energy losses of H+, He+ and He2+ ions in thin gold foils at incident energies 40 to 500 keV have been determined experimentally. Pre-equilibrium stopping in the near-surface metal layers is found. Measurements of the energy loss straggl
Publikováno v:
Physics Letters B. 126:16-19
A method is proposed for determining nuclear reaction times based on the oscillatory nature of particle motion in a planar crystal channel. The method has been tested using the 27Al(p, α)24Mg resonance reaction at Ep=505 keV. The asymmetry of the di
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 2:333-335
The 27 Al(p,α) 24 Mg resonance reaction at E p = 505 keV was studied by analysis of the asymmetry of the shoulders of a (111) planar dip as a function of reaction depth. The displacement of the compound nucleus was obtained by means of analytical ca