Zobrazeno 1 - 10
of 64
pro vyhledávání: '"Ya. A. Teplova"'
Autor:
Ya. A. Teplova, Yu. A. Belkova
Publikováno v:
Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques. 15:243-246
The deceleration of fast heavy ions in matter to a complete stop is accompanied by a change in their equilibrium mean charge, which depends on the velocity that decreases as the distance passed increases. A method is proposed for calculating the depe
Autor:
Ya. A. Teplova, N. V. Novikov
Publikováno v:
Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques. 15:247-258
A method based on experimental data, theoretical models, and the empirical evaluation of experimental parameters in the equilibrium charge distribution of ions is proposed to evaluate charge-changing cross sections. This method makes it possible to o
Autor:
N. V. Novikov, Ya. A. Teplova
Publikováno v:
Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques. 14:241-244
The energy loss straggling for fast ions is simulated using the Monte Carlo method in the case of large and small transferred momenta. The interval of applicability of the Bohr approximation is determined for frequently used solid targets. The asymme
Autor:
Ya. A. Teplova, Yu. A. Belkova
Publikováno v:
Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques. 13:296-299
The possibility of analytically calculating ion energy losses in the velocity interval of 1–10 au, where energy losses reach their maximum value, is considered. In this interval, the charge-exchange processes (electron capture and loss by an ion) l
Autor:
N. V. Novikov, Ya. A. Teplova
Publikováno v:
Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques. 13:289-295
A theoretical model is proposed; it describes the evolution of the charge and energy distributions of ions passing through a target as a Markov process, in which the probability of transitions between elements of phase space is proportional to the cr
Publikováno v:
Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques. 12:769-772
A model for describing the charge distribution of fast multicharged ions passing through a substance is proposed. It takes the ion energy loss into account. The target thickness that is required to establish the equilibrium charge distribution increa
Autor:
Ya. A. Teplova, Yu. A. Belkova
Publikováno v:
Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques. 12:773-777
A method for calculating the ranges of ions with a nuclear charge of Z = 2‒10 in the region of ion velocities of 1 au < V < 20 au in carbon and methane is proposed. The dependences of the ion ranges on the charge and masses of nuclei and ion veloci
Publikováno v:
Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques. 12:526-530
Inelastic energy losses can be presented as two components determined by processes of the ionization of target atoms and the charge exchange of ions. These components are interrelated. The interrelation is determined by the value of the average ion c
Autor:
Yu. A. Belkova, Ya. A. Teplova
Publikováno v:
Radiation Effects and Defects in Solids. 173:175-183
A semi-empirical method is proposed to calculate the ion ranges in energy region E = 0.025–10 MeV/nucleon. The dependence of ion ranges on the projectile nuclear charge, mass and velocity is analysed. The calculations presented for ranges of ions w
Autor:
Ya. A. Teplova, Yu. A. Belkova
Publikováno v:
Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques. 11:732-736
Ranges of ions from He to Ne in gaseous (hydrogen and argon), liquid (water), and solid (carbon) media are analyzed. This analysis demonstrates the different dependences of ranges on the velocities, the charges, and the masses of ions in different ve