[en] The potential importance of direct energy conversion to the long-term development of fusion power is discussed with stress on the possibility of reducing waste heat rejection, a crucial issue for any central power station in the 21st century. Two approaches, direct collection and magnetic expansion, are reviewed. Due to the intimate connection between the type of fusion fuel, the confinement scheme, and the energy conversion technique, all three elements are considered. 28 refs

[en] Different conversion systems of the nuclear fission fragments energy in various electromagnetic energy forms are analyzed. Special attention is paid to the conversion in fission electric cells. A very simple theoretical model is used to describe the electron suppression by a grid with positive or negative potentials. The computations are compared with the experimental results obtained by the authors, in which voltages of several kV are produced. (author)

[en] The output parameters of Fission Electric Cells for the values of the neutron flux existing in the nuclear space reactors have been estimated on the basis of our experimental data obtained at CIP-Bucharest taking into account the nuclear fission process characteriristics and the FEC operation theory. (authors)

No abstract available

[en] The object of this book is to present a review of the basic principles and practical aspects of magnetohydrodynamic (MHD) energy conversion. The author has tried to give qualitative semiphysical arguments where possible for the benefit of the reader who is unfamiliar with plasma physics. The aim of MHD energy conversion is to apply to a specific practical goal a part of what has become a vast area of science called plasma physics. The author has attempted to note in the text where a broader view might be fruitful and to give appropriate references

[en] Buckling is one of the most common phenomena in atom-thick layered structures like graphene. While the buckling phenomenon usually causes disaster for most nanodevices, we illustrate one positive application of buckled graphene for energy harvest, storage and conversion. More specifically, we perform molecular dynamical simulations to show that buckled graphene can be used to collect wasted mechanical energy and store the energy in the form of internal knotting potential. Through strain engineering, the knotting potential can be converted into useful kinetic (thermal) energy that is highly concentrated at the free edges of buckled graphene. The present study demonstrates potential applications of buckled graphene for converting dispersed wasted mechanical energy into concentrated useful kinetic (thermal) energy. (paper)

[en] The authors discuss how directed energy applications require accelerators with high brightness and large gradients to minimize size and weight for space systems. Several major directed energy applications are based upon accelerator technology. The radio-frequency linear accelerator is the basis for both space-based neutral particle beam (NPB) and free electron laser (FEL) devices. The high peak current of the induction linac has made it a leading candidate for ground based free electron laser applications

[en] OAK-B135 DIRECT CONVERSION FISSION REACTOR FOR THE PERIOD SEPTEMBER 1,1999 THROUGH NOVEMBER 31,1999

[en] The principal features of a fusion power reactor employing the magnetic mirror confinement concept are described. A parametric design and cost estimate analysis has been used to optimize the design for minimum capital cost per net electric output. Optimized parameters include the vacuum mirror ratio, the injection energy and angle, the choice of a thermal conversion cycle, and the design efficiency of the charged particle direct converter. The sensitivity of the cost of power for the optimized design to variations in many of the reactor parameters is discussed

No abstract available