[en] A consequence of the rapid development of micron and submicron size electronic devices is the diminished applicability of high energy ion microprobes with their present resolution limitations to the study of such components. Although submicron beams have been reported the available beam current is barely sufficiently for PIXE and is not adequate for RBS. This lack of lateral resolution is due to low beam brightness at the microprobe object and aberrations in the focusing elements. As part of a program to address these problems the Harwell microprobe lens has been relocated on a new 5 MV Laddertron accelerator. The increased brightness and improved stability of this facility has so far led to a reduction in beam size from 3 x 3 μm² to about 2 x 2 μm². The feasibility of using a liquid metal ion source has been examined with a view to achieving more substantial increases in brightness. While such sources have brightness approximately 10⁵ times greater than conventional gaseous sources the highly divergent nature of the beam presents problems for the beam transport system. The use of a liquid metal source on the accelerator has been successfully demonstrated but it indicates the need for a special low aberration injection lens if brightness is to be maintained

[en] A technique for measuring the trace element content of synthetic fibres by detecting X-rays produced by 3 MeV proton bombardment has been developed. Largely to reduce the problems of removing heat from the fibres, an arrangement was used in which the beam was brought out of the vacuum into air or helium. Kapton, aluminium, nickel and molybdenum were tested for suitability as exit windows. Of these, aluminium produced significantly the most background in X-ray spectra while helium was found to be significantly better than air as the medium around the targets. With a kapton window, helium in the target chamber, and suitable collimation, trace element concentration down to a few parts per million could be measured when quantities of fibre of only a few times 10^-5g were available for analysis. (author)

[en] This report reviews current nuclear data from a variety of sources undertaking nuclear physics research, including Harwell Laboratory, the National Physical Laboratory and the Nuclear Physics Laboratory at the University of Oxford. It also covers work on nuclear chemistry. (UK)

[en] The report summarises nuclear data research in the United Kingdom between January and December 1984. The nuclear data presented includes contributions from government research laboratories and Universities, as well as from various collaborations. The section on nuclear data forum includes three individual papers (being processed separately), these are: the DIMPLE criticality experiments, the potential use of criticality benchmark experiments in nuclear data evaluation, and the use of benchmark experiments for the validation of nuclear data. (U.K.)

[en] The paper is the United Kingdom Nuclear Data (UKND) progress report, and summarises nuclear data research in the UK between January and December 1986. The contents of the report contains nuclear data work presented by:- UKAEA Harwell, UKAEA Winfrith, National Physical Laboratory, and the Universities of Birmingham, Edinburgh and Oxford. Included in these contributions are collaborative studies involving institutions in Holland, Italy, West Germany and the United States. The report also contains contributions on Chemical Nuclear Data, as well as the summaries of three invited lectures presented at the 19th UK Nuclear Data Form, Harwell Laboratory, 1986. (U.K.)

[en] The 1983 progress report of the Nuclear Physics Division, UKAEA Harwell, is divided into four main topics. These are a) nuclear data and technology for nuclear power; b) nuclear studies; c) applications of nuclear and associated techniques, including ion beam techniques and moessbauer spectroscopy; and d) accelerator operation, maintenance and development. (U.K.)

[en] A review is given of the applications of ion beam analysis of biological materials by means of elastic scattering, nuclear reactions and x-ray production. The techniques which are specially relevant to biological materials, rather than the general principles which are already well covered in the literature, are discussed. The three techniques and their use for biological analysis are discussed in turn, with treatment of relevant practical matters such as specimen preparation. Finally some recent developments of ion beam analysis are described

[en] Summaries are given of work on nuclear data and technology for nuclear power; nuclear reactions and nuclear properties; applications of nuclear and associated techniques in a variety of fields, particularly with the use of ion beams; accelerator operation and development. (U.K.)

[en] This is a review of the use of nuclear microprobes in support of a wide variety of ''materials'' sciences. Applications areas covered include metallurgy, solid-state physics, fusion research and HT superconductors; some examples are described. The list of references concentrates on the substantial range of publications subsequent to reviews published in 1987. (orig.)

[en] A comprehensive review is given of the production and use of beams of protons, deuterons and heavier ions with spot sizes as small as 2 μm. The formation of such beams either by collimation or by focussing is described and particular attention is given to factors which may adversely affect the resolution. The use of these microbeams for analysis by means of nuclear reactions, elastic scattering or particle induced X-ray emission is described together with many examples and a full bibliography. Other applications and possible future development of microbeams are also discussed. (Auth.)