[en] Two examples of how the measured fission gas isotopic composition can be used in the study of fission gas release phenomena are given. In the first example the ratios of Kr85/Kr86 in release and retained gas are used for calculation of the ''average time'' when the gas was released. This ''average time'' may be used in code qualification. In the second example the degree of conversion of unstable Xe135 to stable Xe136 is derived from the measured ratio of Xe136 to Xe131+132. This conversion is of importance in the calculation of the total Xe generation during irradiation. (author)

[en] There has been and continues to be a perceived need for the fusion energy option in our energy future. The National Energy Plan states that ''the Federal Government recognizes a direct responsibility to demonstrate the scientific and engineering feasibility of fusion''. The goal of the program, in exercising this responsibility, is to develop the knowledge base upon which decisions on the commercial feasibility of fusion will be made after the conclusion of the present scientific feasibility phase of the program. The strategy is to preceed sequentially through a product definition phase, to the product development phase. Product definition is the identification of an attractive fusion reactor concept supported by a sound base of scientific and technological information. Product development is the further refinement of scientific, technological and engineering information base of the selected concept to provide a firm basis for commercial application. Each of these phases will be discussed with special emphasis on the relationship between the annual appropriation process and the influence of external forces on the pace of the program. This discussion will include the use of international cooperation to maintain and extend program scope. Further discussion will cover the important scientific and technological advances of the last few years and the way in which they have influenced the development of our management strategy to maximize our resources

[en] A preconceptual accelerator-breeder design has been developed with improved capability to produce fissile material and thermal power. These improvements allow the design to have the dual role of fissile material and electricity production

[en] The problem considered is the feasibility of unconventional - other than Tokamak - fusion methods: driven plasma and DD or p + B¹¹ → 3 He⁴ reactions. A necessary condition is that the energy loss rate from the injected ion beam to the plasma should be smaller than the power generated. In the introduction the energy loss mechanism are enumerated Part I is concerned with the derivation and solution of a Boltzmann equation appropriate to the problem. At the end of this part the reasons are discussed why the attempt at the solution failed. Apparently because of lack of time this sophisticated method is abandoned and simpler methods are used in Part II. An estimation of the energy transfer rate is made and a result identical to that of Glasstone-Lovberg is obtained. A parametrical study with emphasis of the He³ semicatalysed DD reaction is undertaken. One conclusion is that the assumption of Tsub(e) = 1/10 Tsub(i) gives only for the latter reaction a power ratio of 0724 < 1 at Tsub(i) = 1000keV and Tsub(e) = 100keV. The other conclusion is that kTsub(i) approximately kTsub(e) should be fulfilled (i.e. thermal equilibrium) in order that the energy taken away by the ions disappearing through the loss cone should be smaller than the fusion energy generated. (G.Q.)

No abstract available

[en] The 1986 UK request list for chemical nuclear data has been reviewed in detail by members of the UK Chemical Nuclear Data Committee. New requirements for data measurements and evaluations have been identified, and specific requests have been withdrawn. A new UK request list has evolved, and is given in the form of tabulations covering measurements and evaluations. (author)

[en] The features of ENDF/B-V with respect to fission yields are described. Yields for approximately 1100 nuclides are given for each of 11 fissioning nuclides at one or more fission-neutron energies, plus the yield uncertainties. Selected chain yields and uncertainties are illustrated. Aspects of the evaluation process are discussed. 4 figures, 3 tables

[en] With charged-particle spectroscopy implemented on OMEGA, we have been able to routinely measure the particle spectra (both nuclear lines and continua) from a variety of capsule implosions. Important parameters such as fusion yields, fuel and shell areal densities, and ion temperatures can be readily deduced. We will report on details of this work with emphasis on the implosion physics

[en] This report describes the status of the development of fusion power alternatives and it's effect on climatic change issues

[en] A formula describing the distance--time relationship of a shock wave moving outward from an underground explosion is derived. Calculated results are compared with those computed using the LASL and BOTE formulas and with slifer data obtained from field experiments. For many of the field events, the derived curve provides a better fit than do the LASL or BOTE formulas. Methods are presented for the determination of the detonation energy W under three conditions: (a) where time and distance are known accurately; (b) where there is an unknown offset of time and distance; and (c) where there is an unknown offset of both time and distance. These methods are applied with moderate success to a set of (t,r) data supplied by Goldwire