[en] In a study of inelastic collisions between charged particles using the method of crossed beams, reactions involving detachment from negative ions by electron impact, dissociative recombination of a polyatomic molecular ion and an electron, and charge-changing collisions between heavy particles, have been investigated. (U.K.)

[en] The European Activation System (EASY) includes as the source of nuclear data the European Activation File (EAF). A new version of EAF, EAF-2001, has been developed, and this report gives details of the EAF biological, clearance and transport libraries. The sources of data and the methodology of approximate calculation are described, while the bulk of the report is devoted to a listing of the biological, clearance and transport coefficients of all the 1654 radionuclides contained in the libraries. The properties listed are: specific activity, committed effective doses per unit uptake for ingestion and inhalation, the source of the biological data, the transport coefficient (A₂), the source of the A₂ value, the clearance level value and the source of the clearance level value. (author)

[en] The European Activation System (EASY) includes, as the source of nuclear data, the European Activation File (EAF). A new version of EAF, EAF-2001, has been developed, and this report gives details of the EAF decay data library. The sources of data and the methods of assembly are described, but the bulk of the report is devoted to a listing of summary properties of all the 1917 nuclides contained in the library. The summary properties listed are: nuclide spin, decay modes, half-life (with percentage error), mean decay energies and data source. (author)

[en] The aim of the meeting was to review the activities of the Nuclear Data Section (NDS) covering the period 2002-2003, to evaluate the NDS program of work for the two-year period of 2004-2005, and to advise on future activities (2006-2007). The presentations and deliberations in plenary and working group sessions led to many conclusions and recommendations which are given in the full report of the meeting. Conclusions of particular significance have been: Specific nuclear data compilation activities undertaken by NDS are unique. INDC members appreciated that more attention is now being devoted to the compilation of charged-particle data for EXFOR. The Committee recommends to consider further improved methods or data storage and compilation for EXFOR. Furthermore, as a result of recent geopolitical changes, especially in Europe, the relevant IAEA and NEA responsibilities need to be slightly readjusted. The Committee took note that the data dissemination and international co-ordination of data exchange represent the most important components of NDS activities, and that improvement of services has always been the top priority. The co-ordination role of NDS for NRDC and NSDD is highly appreciated, and should be further strengthened. The Committee noted with satisfaction that the data dissemination services of NDS are utilized by scientists working in all parts of the world. These requests pertain to data for all branches of nuclear applications. INDC members appreciated that continued efforts are underway in the NDS to update the general purpose libraries. The Committee finds it important that the NDS continues to maintain and update the photonuclear, RIPL, cross-section standards and FENDL-2 libraries (considering that the latter is the Reference Library for the ITER project). The Committee members briefly described on-going nuclear data projects in their countries/regions, and also spelt out nuclear data requirements in various fields. While most of these needs are already being considered by the NDS, it is recommended that the NDS expands the range of interests, according to available resources and expertise. The Committee lauds the competence and flexibility of NDS with regard to nuclear data services. A major effort of the NDS is devoted to the supply of high-quality data for energy production. However, NDS staff are now paying enhanced attention also to data for other applications, such as diagnostic and therapeutic nuclear medicine, neutron activation analysis, ion beam analysis, etc., thus a good balance has been achieved between energy and non-energy related activities. The INDC emphasizes the central role of the NDS in the co-ordination of international nuclear data center networks and in providing excellent services to all Member States. The Committee finds the nuclear data activities to be well balanced between services and data development work

[en] FISPACT is the inventory code included in the European Activation System (EASY). A new version of FISPACT: FISPACT-2001 has been developed and this report is the User manual for the code. It explains the use of all the code words used in the input file to specify a FISPACT run and describes how all the data files are connected. A series of appendices covers the working of the code and the physical and mathematical details. Background information on the data files and extensive examples of input files suitable for various applications are included. (author)

[en] The reactions (n,p), (n,α), (n,np+pn+d), (n,t) and (n,h) at a 14.5 MeV are considered. Reaction cross section data up to 1985 are reviewed and compiled in the form of tables. These are used to test existing systematic formulae and to develop new formulae which can be used to predict unknown cross sections. The new formulae give fits to the data (by the method of weighted least squares) which are an improvement on existing systematics with the use of similar or fewer adjustable parameters. An estimate of the error expected from the use of the systematics is given. Data on isomeric cross sections for these reactions are tabulated and an attempt is made to find a simple systematic formula for the isomer ratio. No satisfactory fit was found. (author)

[en] SAFEPAQ-II is the new software tool that has been developed to enable efficient production of the EAF nuclear data libraries that are required as input to the FISPACT activation code. It forms part of the European Activation System (EASY), and replaces SAFEPAQ and SYMPAL that were used previously. It enables all the nuclear data to be stored in relational databases (Access) and by using an interactive user interface allows the data to be viewed, modified, validated and then produced in the required EAF format as text files. It is written in Visual Basic and runs under the Windows NT4 and 98 operating systems. The Windows operating system has the great advantage of portability and SAFEPAQ-II has been successfully installed at two external sites for use by UKAEA's international collaborators. It has been used in the production of the EAF-2001 data libraries. (author)

[en] This document gives an overview of the European Activation System (EASY) as released in 2001. EASY-2001 consists of a wide range of codes, data and documentation all aimed at satisfying the objective of calculating the response of materials irradiated in a neutron flux. It is designed to investigate fusion devices that will act as intense sources of high energy (14 MeV) neutrons and cause significant activation of the surrounding materials. However, the very general nature of the calculational method and the data libraries means that it is applicable (with some reservations) to all situations (e.g. fission reactors or neutron sources) where materials are exposed to neutrons below 20 MeV

[en] The European Activation System (EASY) is the complete package of data, inventory code and processing system for activation calculations that is maintained at UKAEA Culham. One component of EASY is the EAF data library, others are the inventory code FISPACT and the processing tools SYMPAL and SAFEPAQ. SYMPAL is the processing tool for the cross section library; however, it does not cover the tasks of evaluation, visualisation or decay data assembly. To simplify library maintenance and ensure that satisfactory quality assurance procedures could be set up, it was decided to produce an interface with the aims of: insulating the user from direct contact with the data, providing a means of visualising data, maintaining all libraries and automatically logging all the data changes. SAFEPAQ is the interface that has been developed to fulfil these objectives. It uses the PV-wave environment which has the capability of producing a 'stand-alone' Graphical User Interface based on 'widgets'. Taking advantages of these facilities, SAFEPAQ has been implemented as a windows (Motif) application using the standard menus, dialog boxes and buttons common to such applications. This report provides a description of the various facilities provided: showing the various dialog boxes that will be displayed and describing how SAFEPAQ should be used to perform various tasks. (author)

[en] The FISPACT inventory code calculates activation of material irradiated in a neutron flux. This manual explains how to access data libraries suitable for fusion reactor activation and the method of specifying the details of irradiation by a system of codewords. (author)