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Summarizes the original database ORNLSPEC.DAT and the derived databases MASTER.DAT, DECAY.DAT, HALIFLFE.DAT, and GDATBASE.DAT, plus how corrections were handled for selected isotopes and naming conventions. Includes appendix examples showing database structure and lists the principal references and quality-assurance approach.",{"@graph":69,"@context":123},[70,84,106],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":40,"@type":76,"position":81},"https://docshare.wps.com/document/research-report/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/sources-for-radioactive-decay-data-summary-data-files-and-references/290985/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/sources-for-radioactive-decay-data-summary-data-files-and-references/290985.png","ImageObject",300,407,{"name":92,"@type":93},"Blaney","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-18","2026-09-17",true,{"@type":102,"interactionType":103,"userInteractionCount":105},"InteractionCounter",{"@type":104},"ViewAction",11,{"@type":107,"mainEntity":108},"FAQPage",[109,115,119],{"name":110,"@type":111,"acceptedAnswer":112},"What original database was provided for radioactive decay constants and gamma energies?","Question",{"text":113,"@type":114},"ORNLSPEC.DAT (dated 29/11/91) from NRPB was used, containing isotopes, decay constants, and gamma energies.","Answer",{"name":116,"@type":111,"acceptedAnswer":117},"Which derived data files does ADMS use for decay routes, half-lives, and gamma energies?",{"text":118,"@type":114},"DECAY.DAT for decay routes, HALIFLFE.DAT for half-lives, and GDATBASE.DAT for gamma energies.",{"name":120,"@type":111,"acceptedAnswer":121},"How were data quality and manual entry checks handled?",{"text":122,"@type":114},"Manual data entry was thoroughly checked (but not independently). Data supplied by NRPB was accepted as provided, and the quality assurance plan excluded the radioactivity data.","https://schema.org",{"og:url":83,"og:type":125,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":127,"canonical":83},"index,follow",{"doc_id":129,"site_id":62},290985,1789643131,{"code":4,"msg":5,"data":132},{"doc_id":129,"user_id":133,"nickname":92,"user_avatar":134,"doc_module":4,"category_id":39,"category_name":40,"doc_title":65,"doc_description":67,"doc_content":135,"file_id":136,"file_url":137,"file_type":138,"file_size":139,"view_count":105,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":34,"language":140,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":141,"faqs":142,"seo_title":143,"seo_description":67,"update_tm":130,"read_time":144,"preview_page_count":4},1236954677761,"https://us-avatar.wpscdn.com/davatar_994ba38a5ba835b3df7d355c54d3ed8d","SOURCES FOR RADIOACTIVE DECAY DATA  \nNational Power / University of Surrey (A G Robins) and CERC  \nSummary  \nThe source of data for radioactivity half-life, decay route and radiation energy are given, together with samples from the relevant ADMS data files:  \nDECAY.DAT  \nHALFLIFE.DAT  \nGDATBASE.DAT  \n1. Data sources  \nThe original data base was provided by NRPB as a file, ORNLSPEC.DAT (dated 29/11/91) . This contains tabulations of the isotopes, decay constants and gamma energies. The name suggests that it was derived from data compiled by Oak Ridge National Laboratory. A section of the data base, together with a key, is shown in the Appendix.  \nAs the radioactive module of ADMS must also contain decay route and decay route fractions, we then derived an additional main data base, MASTER.DAT, using:  \n􀁸 firstly, isotopes and half-lives from the NRPB/ORNL data base,  \n􀁸 secondly, additional half-life and the decay scheme and branching fractions for all isotopes from Lederer et al (1968), and  \n􀁸 finally, data to complete the data base from the American institute of Physics Handbook (1972), Nuffield Advanced Science Book of Data (1994), and Dzhelepov et al (1961) .  \nWe used the 6th edition of Lederer (1968) not the 7th (1979), which was not available to us but appears to have been used by NRPB/ORNL. Some minor discrepancies maybe attributable to this. A selection of the derived data base, together with a key is shown in the Appendix.  \nThe following minor changes were made:  \n1. Isotopes CM-250 and CF-254 were excluded on the grounds that their decay is dominated by spontaneous fission.  \n2. PB-195M was redesigned PB-195 since all references consulted regarded this as the only state of the isotope.  \n3. Argon was denoted by the chemical symbol AR rather than A given in the NRPB database.  \n2. Derived Data Bases  \nThe ADMS radioactive decay module uses two data bases, one for half-lives and one for decay routes, whereas the gamma dose module uses a data base for gamma energies. These are stored in the following files, derived from ORNLSPEC.DAT and MASTER.DAT:  \nDECAY.DAT for decay routes  \nHALIFLFE.DAT for half-lives  \nGDATBASE.DAT for gamma energies  \nA selection of data from these files, together with keys, is shown in the Appendix.  \n3. References  \nAmerican Institute of Physics Handbook, 3rd Ed., 1972 McGraw-Hill Lederer et al., 1968, Table of Isotopes, 6th Ed., Wiley  \nNuffield Advanced Science Book of Data (first revised edition), 1984, Longman  \nDzhelepov, B.S. and Peker, L.K., 1961, Decay Schemes of Radioactive Nuclei, Pergamon  \n4. Quality Assurance  \nIt was agreed with the clients that the quality assurance plan would not include the radioactivity data. Data entered by hand was thoroughly (but not independently) checked, and that from NRPB was accepted as supplied.  \nAPPENDIX  \nEXAMPLES FROM DATA BASES  \nA1. Master Data base, ORNLSPEC.DAT (29/11/91)  \nThe decay constants and gamma energies data master data base from NRPB. One element per block, entries per block:  \nLine 1: Isotope name, decay mode (A, alpha; B, beta; G gamma)  \nLine 2: Decay rate time constant (1 / day)  \nLine 3 etc: Energy levels, probability per disintegration pairs, preceded by number of entries.  \nH-3 B  \n1.538E-04  \n10.1 5.68E-02 BE-7 BG  \n1.300E-02  \n2 0.1 8.92E-08 1.0 3.90E-08  \n2 0.200 7.69E-03 0.500 9.53E-02 BE-10 B  \n1. 187E-09  \n1 1.0 2.52E-01 C-11BG  \n4.898E+01  \n2 0.1 4.45E-09 1.0 3. 85E-01  \n2 0.500 1.96E+00 1.000 4.40E-02  \nFM-225 ABG  \n8.289E-01  \n7.02E+00 1.0  \n1 0.1 9. 86E-01  \n8 0.010 7.76E-03 0.015 3.67E-01 0.020 2. 87E-01 0.030 1.94E-02 0.050  \n1. 14E-02 0.100 9.37E-03 0.200 4.50E-04 0.500 3. 13E-05 FM-257 ABG  \n6. 897E-03  \n6.51E+00.1.0  \n2 0.1 1.08E+00 1.0 1.24E-02  \n8.0010 5. 10E-03 0.15 2.31E-01 0.020 3.67E-01 0.030 3.92E-02 0.050 1.33E- 02 0.100 4.92E-01 0.200 2. 19E-01 0.500 1.03E-02  \nMD-257 ABG  \n3.199E+00  \n7.07E-01.1.0  \n2 0.1. 1E-01 1.0 3.5IE-03  \n7 0.010 2.22E-03 0.015 1. 15E-01 0.020 2.08E-01 0.030 4. 87E-02 0.100 417E-","cbCaihSzUbpaYr8B","https://ap.wps.com/l/cbCaihSzUbpaYr8B","pdf",236580,"English","# Summary\n## Data sources\n## Derived Data Bases\n## References\n## Quality Assurance\n# Appendix\n## Examples from Data Bases","[{\"question\":\"What original database was provided for radioactive decay constants and gamma energies?\",\"answer\":\"ORNLSPEC.DAT (dated 29/11/91) from NRPB was used, containing isotopes, decay constants, and gamma energies.\"},{\"question\":\"Which derived data files does ADMS use for decay routes, half-lives, and gamma energies?\",\"answer\":\"DECAY.DAT for decay routes, HALIFLFE.DAT for half-lives, and GDATBASE.DAT for gamma energies.\"},{\"question\":\"How were data quality and manual entry checks handled?\",\"answer\":\"Manual data entry was thoroughly checked (but not independently). Data supplied by NRPB was accepted as provided, and the quality assurance plan excluded the radioactivity data.\"}]","SOURCES FOR RADIOACTIVE DECAY DATA - Summary - data files and references | PDF",18]