We have developed the theory of electromagnetic interaction of relativistic charged particles with metal-organic frameworks (MOFs). The electrostatic potential and electron number density distribution in MOFs were calculated using the most accurate data for the atomic form factors. Peculiarities of axial channeling of fast charged particles and various types of electromagnetic radiation from relativistic particles has been discussed.

We present the results of the theoretical calculations and the corresponding experiments with compressed hydrogen storage in flexible glass capillaries both at room and liquid nitrogen temperatures. It was demonstrated that the strength of produced quartz capillaries can be high enough to withstand the internal hydrogen pressure up to 233 MPa and capillary vessels can have relatively high volumetric and gravimetric capacity. Copyright (C) 2013, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.

We present the results of the experimental investigation of hydrogen storage in glass capillary arrays. It is demonstrated that quartz–epoxy capillary arrays can have extremely high gravimetric and volumetric capacity, exceeding US DOE 2010 target values. The new method of pressurized hydrogen loading and releasing is developed based on plugging up the capillaries with stoppers in high-pressure environment.

We have developed the technology of hydrogen storage in capillary arrays, and we present the corresponding theoretical background. The technology can be effectively used for safe transportation and storage of highly pressurized hydrogen in mobile systems, ranging from domestic electronic devices to ground and sea vehicles.

It is demonstrated that the unique structures of carbon nanotubes and single-crystals of C60 fullerenes may have applications to X-ray, neutron and high-energy particle physics, based on channeling, Bragg diffraction and coherent radiation. These are reviewed, pointing out the peculiarities and advantages of nanocrystals compared to ordinary crystals. New applications are explored: X-rays and neutron channeling, undulator radiation in periodically bent nanotubes, “channeled” transition radiation. Quantum and classical channeling, channeling in bent nanocrystals, Bragg scattering of X-rays and neutrons, channeling radiation, coherent bremsstrahlung, parametric X-ray and nanotube undulator radiation are particularly studied using both analytical and Monte-Carlo methods. Continuous potentials, electron densities, transverse energy levels, and spectra of various types of coherent radiation are calculated. Large dechanneling lengths of positive particles, bending efficiencies, reflecting coefficients of soft X-rays and PXR yields are predicted. Principles of particle detectors using photo- and secondary electron emissions are discussed.

Our theoretical calculations show that multi-wall nanotubes (MWNTs) can serve as x-ray waveguides. Two types of waveguiding exist based either on Fresnel or Bragg reflections of x-rays from nanotube walls. Moreover, fast electrons propagating through MWNTs can emit "channeled" transition (CTR) or parametric x-ray (PXR) types of radiation with much greater intensity than in ordinary crystals.

We developed a new approach to the problem of channeling of charged particles in a nanotube rope with account taken of the incoherent scattering of particles on substance electrons and thermally vibrating atoms. We present the results of computer simulations of the spatial and angular distribution of ultra-relativistic particles channeled in straight and bent nanotubes and estimate possibilities of governing high-energy beams with nanotubes.

We present the theory of the X-ray radiation arising from the diffraction of electromagnetic field of fast charged particles on structures with relatively large spatial period. The role of the dynamical diffraction effects is discussed. It is shown that at small enough angles of particle incidence upon nanotube or capillary bundle a new kind of radiation may arise associated with X-ray channeling.

A theory of channeling of relativistic electrons and positrons as well as positively and negatively charged ions in molecular crystals of fullerenes (fullerites) is developed. The crystal potentials are calculated, and the spatial and angular distributions of beams of particles propagating along principal crystallographic directions are determined. A method is developed for taking into account the effect of incoherent scattering on the channeling process.

We discuss the features of channeling, diffraction and electromagnetic radiation due to the interaction of fast charged particles with new kinds of cristallite structures.

We present the theory of multi-wave diffraction (quantum channeling) of MeV electrons and positrons, and soft X-rays in fullerite crystals. Using Doyle–Turner approximation to the atomic scattering factor and taking into account thermal vibrations, we have calculated the continuum potential and demonstrated that channeling in fullerites have some new features not available in ordinary crystals.

We present a theory to describe the propagation of relativistic charged particles, X-rays and thermal neutrons through straight or slightly bent nanotubes and calculated the spectra of electromagnetic radiation accompanying the channeling of charged particles. (C) 1998 Elsevier Science B.V.

A theory of induced Cherenkov radiation in cylindrically symmetrical dielectrics in the case when an electron beam is moving close to the dielectric surface is presented. The spectrum of excited radiation modes has been investigated, and analytical expressions for the gain at the frequencies of various modes have been derived.

The theory of Smith-Purcell effect for a 2D photonic crystal is constructed from the first principles proceeding from Maxwell’s equations and microscopic characteristics of particles the crystal consists of. Two-dimensionality 2D is thought in two ways: i) the photonic crystal is an arranged system of particles disposed in a monolayer, ii) the periodicity is in two different directions. We derive the expression for the spectral and angular distribution of arising Smith-Purcell radiation. We analyse the features distinctive for the 2D photonic crystal and show that its spatial distribution differs drastically from the distribution of the radiation from conventional diffraction gratings.

The possibility of obtaining induced X-ray Cherenkov radiation is considered using the radiation theory which was developed previously in order to explain corresponding experiments on spontaneous radiation near the photoabsorption edges of some substances.

We have developed the theory of spontaneous and stimulated Cherenkov radiation from fast electrons which move close to the surface of a dielectric string or inside a dielectric capillary and formulated conditions needed for the effective amplification of radiation.

The theory of the stimulated radiation from fast electrons moving above the lattice of microscopic bumps on a metal surface has been discussed. A comparison has been made between this type of radiation and the Smith-Purcell radiation.