Zobrazeno 1 - 10
of 135
pro vyhledávání: '"Frank O. Goodman"'
Autor:
Frank O. Goodman
Publikováno v:
Canadian Journal of Physics. 88:365-378
With standard forms of the approximate Maxwell–Boltzmann rate equations, some of the author’s previous work is used to obtain exact results for the gas particle velocity distribution functions for the general case of laser excitation function, an
Publikováno v:
Radiation Effects and Defects in Solids. 162:523-530
We investigate the energy losses of MeV protons moving paraxially in single-wall carbon nanotubes (CNTs) due to excitations of carbon valence electrons. To elucidate the significance of the large variation in electron density inside the nanotubes, we
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 256:162-166
We investigate the stopping power and the image force on fast ions moving parallel to a graphene sheet caused by the dynamic polarization of carbon valence electrons. We compare the results based on a two-dimensional hydrodynamic model of graphene wi
Publikováno v:
Radiation Physics and Chemistry. 76:524-528
We use a two-fluid hydrodynamic model to describe the dielectric response of the σ and π electron systems on a multiwalled carbon nanotube consisting of up to several tens of concentric cylindrical shells. In particular, we evaluate the stopping po
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 256:167-171
We extend the two dimensional hydrodynamic model, describing the collective electronic response of a single-wall carbon nanotube to include dielectric media surrounding the nanotube. We make use of the dielectric function for water recently developed
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 230:391-397
We model the charge-state evolution of fast hydrogen-like ions in the course of grazing scattering from metal surfaces by a Markov process with the time-dependent jump coefficients. Using the master equation for charge exchange, we show that the proc
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 230:142-147
We used the hydrodynamic model to describe the dielectric response of a multi-walled carbon nanotube to a fast point charge moving paraxially, either inside or outside the nanotube. Calculations are performed for a two-walled nanotube, giving rise to
Publikováno v:
Physics Letters A. 329:94-99
We use a two-dimensional hydrodynamic model to describe the linear response of electrons on a single-walled carbon nanotube to a charged particle moving paraxially inside or outside the nanotube. We show that, when the particle speed exceeds a thresh
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 193:221-226
Joint statistical description of the distribution of ion charge states and the spatial structure of a cluster, made of heavy ions, allows a self-consistent generalization of the Brandt–Kitagawa variational theory, including dynamically-screened int
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 193:26-29
We describe the evolution of the charge state of a fast ion in a thin solid foil by a non-stationary continuous-time Markov process which takes two discrete values, appropriate for H and He projectiles. General expression is presented for the ion ene