Engineering topics
Publications and source records attributed to Pritychenko, B..
A look at how authorship of physics publications (particularly nuclear publications) have changed throughout the decades by comparing data mined from the National Nuclear Data Center (NNDC) with observations.
A new evaluation of 2β-decay half lives and their systematics is presented. These data extend the previous evaluation and include the analysis of all recent measurements. The nuclear matrix elements for 2β-decay transitions in 12 nuclei have been extracted. The recommended values are compared with the large-scale shell-model, QRPA calculations, and experimental data. A T{sub 1/2}{sup 2ν}∼1/E{sup 8} systematic trend has been observed for recommended {sup 128,130}Te values. This trend indicates similarities for nuclear matrix elements in Te nuclei and was predicted for 2β(2ν)-decay mode. The complete list of results is available online at (http://www.nndc.bnl.gov/bbdecay/)
A collaborative study by Brookhaven-McMaster-Central Michigan is underway to evaluate B(E2)↑ for 0{sub 1}{sup +}→2{sub 1}{sup +} transitions. This work is a continuation of a previous USNDP evaluation and has been motivated by a large number of recent measurements and nuclear theory developments. It includes an extended compilation, data evaluation procedures and shell model calculations. The subset of B(E2)↑ recommended values for nuclei of relevance to the double-beta decay problem is presented, and evaluation policies of experimental data and systematics are discussed. Future plans for completion of the B(E2;0{sub 1}{sup +}→2{sub 1}{sup +}) evaluation project are also described.
The International Network of Nuclear Reaction Data Centres (NRDC) coordinated by the IAEA Nuclear Data Section (NDS) successfully collaborates in the maintenance and development of the EXFOR library. As the scope of published data expands (e.g. to higher energy, to heavier projectile) to meet the needs of research and applications, it has become a challenging task to maintain both the completeness and accuracy of the EXFOR library. Evolution of the library highlighting recent developments is described.
The Nuclear Science References (NSR) database together with its associated Web interface, is the world's only comprehensive source of easily accessible low- and intermediate-energy nuclear physics bibliographic information for more than 210,000 articles since the beginning of nuclear science. The weekly-updated NSR database provides essential support for nuclear data evaluation, compilation and research activities. The principles of the database and Web application development and maintenance are described. Examples of nuclear structure, reaction and decay applications are specifically included. The complete NSR database is freely available at the websites of the National Nuclear Data Center (http://www.nndc.bnl.gov/nsr) and the International Atomic Energy Agency (http://www-nds.iaea.org/nsr)
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