[en] The design parameters of a commercial-scale fast breeder reactor which is currently under construction by regeneration of these data is preliminary analyzed. The analysis of nuclear and thermal characteristics as well as safety features of this reactor is emphasized. And the evaluation of the initial core mentioned in the system description is carried out in the areas of its kinetics and control system, and, at the same time, the flow distribution of sodium and temperature distribution of the initial FBR core system are calculated. (KAERI INIS Section)

[en] The arrangement of the primary heat heat transport system in LMFBRs can be cone of two distinct types; the pool system and loop system. The pool types are Phenix, Superphenix, PFR, CDFR etc., and the loop types are SNR-300, SNR-2, CRBR, PLBR, MONJU etc. The available materials of those reactors were used in this study. The general characteristics of the two types were analytically compared through the qualitative considerations. Generally, it cannot be said that one type is superior to the other since each of them has its own advantages and disadvantages in design, structure, seismic assurance, operation, safety etc. When FBRs are to be introduced in the future, quantitative analysis should be performed on more technological information, and besides the technical experiences of the developed countries should be fully examined

[en] In order to investigate equilibrium core characteristics of a large LMFBR, nuclear-thermal hydraulic and safety-related characteristics are considered for the equilbrium core of Super-Phenix 1. Using the nuclear computational system for a large LMFBR (KAERI-26G cross section library/1DX/2DB), bias factor of the effective multiplication factor, refueling pattern and enrichments of refueled fuel assemblies are determined. Nuclear characteristics such as criticality, power distribution, and breeding gain are also obtained for the initial core to the equilibrium core. Based on the assembly power distribution of the equilibrium core, coolant flow distributions are determined with the use of THI3D code. Temperature fields within the core assemblies and pressure drop across the core assemblies are also analyzed. In addition, the subchannel analysis of the hottest assembly under the steady state is performed with COBRA-IV-I code. Finally, transient behaviors of reactivity, power, and temperature due to the loss of flow accident without scram are considered and the boiling initiation time of coolant in the fuel assembly is determined for the equilibrium core with SACO code. (Author)

[en] Relativistic differential and integrated cross sections for excitations of the Li-like ions have been calculated in the first Born approximation. The relative importance of various relativistic effects in the cross sections for the inelastic scattering of fast charged particles with atoms is discussed. Fano's small-angle approximation of the relativistic (transverse) interaction is generalized to include E1-forbidden transitions as well as allowed ones. It is shown that the transverse interaction for δl> or =2 excitations increase integrated cross sections as incident energy is increased, similar to the dipole-allowed transitions though with smaller magnitudes

[en] We have investigated the reliability of the dipole approximation for the transverse interaction in the inelastic collision of fast electrons with Be-and B- like ions through numerical computations. It is shown that the dipole approximation is not feasible for the nonvanishing transverse effect at large angle scattering when the scattering is accompanied by excitations corresponding to the intercombination lines. (Author)

[en] We analyze Chern-Simons field theory coupled to a nonrelativistic matter field on a sphere using canonical transformation on the fields with special attention to the role of the rotation symmetry: SO(3) invariance restricts the Hilbert space to the one with a definite number of charges and dictates the Dirac quantization condition to the Chern-Simons coefficient, whereas SO(2) invariance does not. The corresponding Schroedinger equation for many anyons (and for multispecies) on the sphere are presented with appropriate boundary conditions. In the presence of an external magnetic monopole source, the ground state solutions of anyons are compared with monopole harmonics. The role of the translation and modular symmetry on a torus is also expounded

[en] A joint study between Korea and France for a period of 2 years (1983-1984) has been planned to extract the prerequisite infrastructure and to establish an optimum system for preparation of the introduction of FBR to Korea, for an FBR plant is expected to be commercialized around the turn of this country. Prior to the joint study, we examined in this work the scope of work to be performed by each partner, through the analyses of reactor technology, international relationship and international economic trends. In the reactor technology, we examined the following items; plutonium availability, differences in fuel fabrication, reprocessing between oxide fuel and mixed oxide fuel, sodium technology, nuclear and thermal characteristics of FBR mixed oxide core, licensibility of pool type FBR in the light of U.S. safety regulatory standards, unique French experiences and technology which cannot be acquired from other FBR developing countries. Also, manpower needed in FBR project was estimated. In the international economy, we examined the following items; prospects of the international economy in 1990's, world economic trends and the Korean position on them, the effect of the introduction of FBR into Korea, etc. Through the above analyses, it was found that FBR industry would be an effective strategic one in case that FBR would be introduced early by the enhancement of national investment capability and multilateral foreign trades. (Author)