Aareadme_dece.txt Prepared by A.B.Pashchenko, 10 January 1995 Revised by A.B.Pashchenko and H.Wienke, february 1996 FENDL/D-1.0 Decay Data Library for FENDL Version 1.0 of January 1992 The subdirectory [FENDL.DECAY.FENDLD] contains the FENDL/D-1.0 evaluated nuclear data library for fusion applications. This library was supplied to the IAEA/NDS by F.M.Mann (F.M.Mann, Private Communication, January 22, 1992), following the recommendation of the IAEA Advisory Group Meeting on 'FENDL-2 an Associated Benchmark Calculations', held in Vienna from 18 to 22 November 1991, see report INDC(NDS)-260. The FENDL/D-1.0 library was generated by merging data from ENDF/B-VI and from ENSDF (version of May 1990) and contains the basic information (only some of which are fully evaluated) for approximately 2900 nuclides and isomers needed for general activation calculations: * Isotope * Half-life * Number of decay modes * Fractions of decay in each decay mode (branching ratio) * Decay daughter isotope in each decay mode * Gamma-ray intensity and energy spectrum in each decay mode (Currently 21 energy groups, not consistent with the FENDL gamma-ray group structure which is 42) The data are in ENDF-6 format and have passed the tests in CHECKR. The ENSDF data were converted in ENDF-6 format by using the BNP program MEDLIST. FENDL/D-1.0 decay data library are available as data file 'DECAY.DAT'. It has a size of 27 Megabytes. For documentation see IAEA-NDS-167 document. Additional information on the decay data file may be obtained from Dr.F.M.Mann, Westinghouse Hanford Company, Mail Stop HO-36, P.O.Box 1970, Richland, WA 99352 U.S.A. FAX: 1-509-376-1293 Phone: 1-509-376-5728 E-mail: u1635@c.nersc.gov IMPROVEMENTS TO THE DECAY DATA LIBRARY AND THE FEASIBILITY OF PREPARING PROCESSED FILES. The status and possible improvements to the FENDL decay data library were discussed at the IAEA Advisory Group Meeting on 'Improved Evaluations and Integral Data Testing for FENDL' held in Garching, Germany, from 12 to 16 September 1994, report INDC(NDS)-312. It was noted that there is no standardized processed decay data files because the needs of each inventory code are rather different. It was proposed that E.T.Cheng, TSI Research, USA, should organize a subgroup to consider the feasibility of preparing processed files and should look at ways of comparing the existing libraries. The status report by E.T.Cheng are given in Appendix. New naming conventions of readme files. --------------------------------------- The following conventions are used as substitute for the numerous readme files with the SAME name (aareadme.txt) in the FENDL directory tree. For the record, according to J.White, RSIC, four levels of consideration are used in determining a short extension of 'aareadme' following underscore (aareadme_/*/*/*/*.txt). The levels are: /type of data/primary format description/secondary description/other. The first three characters of the directory name was used to define the data type. About the file extension we have agreed on txt. In an arrangement close to the directory tree blocks, the new name extensions are: ACTIVATION - ACT ACTPMC ACTE ACTPVE ACTP ACTPFL DECAY - DEC DECE DOSIMETRY - DOS DOSE FUSION - FUS FUSE FUSP TRANSPORT - TRA TRAE TRAP TRAPMC TRAPMG ----------------------------------------------------------- LEGEND: E, evaluated data or data in "ENDF-like" format P, processed data ******************************************************************************* For any clarifications/suggestions, please contact A.B.Pashchenko or H.Wienke, Nuclear Data Section, Division of Physical and Chemical Sciences International Atomic Energy Agency, Wagramer Strasse 5, P.O.Box 100, Vienna, A-1400 AUSTRIA (Telex: +43-1-12645; Fax: +43-1-20607; Phone: 0043-1-2060-21708 or 21714 E-Mail: INTERNET: PASHCHENKO@IAEAND.IAEA.OR.AT or WIENKE@IAEAND.IAEA.OR.AT ******************************************************************************** ******************************************************************************** Apendix ******************************************************************************** Date: December 7, 1994 To: Distribution From: E.T. Cheng, TSI Research Subject: Decay Data Library for FENDL Gentlemen: I have investigated the decay data library provided by Dr. Fred Mann for FENDL activation applications. The file contains the basic information needed for general activation calculations: 1. Isotope 2. Half-life 3. Number of decay modes 4. Fractions of decay in each decay mode (branching ratio) 5. Decay daughter isotope in each decay mode 6. Gamma-ray intensity and energy spectrum in each decay mode (Currently 21 energy groups, not consistent with the FENDL gamma-ray group structure which is 42) The activity and decay gamma-ray will be fully disclosed if the above basic information is available. This will allow us to calculate: (1) the waste disposal ratings (if based on specific activity limit), and (2) biological dose rate (either contact dose rate or dose rate at distances from a specified irradiated geometry). Additional information will be needed for the following activation related quantities: 1. Afterheat - Decay beta energy and decay gamma energy, or the sum of both decay energies, and 2. Radiological Hazards - Various biological hazard coefficients. For the FENDL activity to produce a globally acceptable working decay data library, we need to review and update the existing information in the FENDL decay data library, and install additional information into the FENDL system for afterheat and radiological hazards calculations. I would welcome any suggestions and comments from all of you regarding what we should do in order to produce a globally acceptable working decay data library for FENDL. Distribution: Hosny Attaya, ANL Robin Forrest, UK/AEA S. Ganesan, IAEA/NDS Yujiro Ikeda, JAERI Jura Kopecky, ECN Fred Mann, Westinghouse-Hanford Anatoly Pashchenko, IAEA/NDS Mohamed Sawan, UW-Madison