An older version of Isotope Explorer (VuENSDF) is available for Macintosh [VuENSDF for Mac]. This version can be used to view data from the Table of Isotopes CD-ROM [TOI].
Isotope Explorer allows users to view nuclear data interactively by selecting commands and options from a menu bar or a tool bar, or interacting directly with objects such as levels and gammas.
The program uses a multiple document interface (MDI) that makes it possible to open a number of files and display them at the same time in child windows inside the main window. It supports four types of views: level scheme mode, table mode, text editor and nuclear chart mode.
In level scheme and table modes the program can display ENSDF format data that are organized into files with extension .ENS or .ENX (see below). In addition to .ENS and ENX files, the text editor can display ASCII text files. In nuclear chart mode, nuclear properties can be displayed as color-coded nuclear charts from files with the extension .CHR.
Current information about the program is given on the Isotope Explorer Home Page with URL: http://isotopes.lbl.gov/isotopes/isoexpl/isoexpl.htm or http://www.fysik.lu.se/nucleardata/isoexpl/isoexpl.htm. The program can be freely downloaded from the World Wide Web.
ENSDF
The Evaluated Nuclear Structure Data File (ENSDF)
[ENSDF] contains
nuclear structure and radioactive decay data, primarily derived from experiments.
ENSDF is organized in a hierarchial structure:
One important feature of the ENSDF format is that data sets are independent, i.e. one data set contains all necessary information for a certain aspect of a nuclide. This means that parts of ENSDF (individual data sets) can be distributed without loss of information.
The ENSDF format comes in two flavors, ENSDF (.ENS file extension) and ENSDF/2 (.ENX file extension). The main difference is that the ENSDF/2 format is somewhat more compact, and it contains explicit information on the final levels of a gamma-ray transition (which in the ENSDF format in some cases is given implicitly by the energy match). Also, the comment records in the ENSDF/2 format have been transcribed to contain extended characters such as Greek letters, superscripts and subscripts.
Some data sets contain information on sets of levels called 'bands'. A band in Isotope Explorer is a set of nuclear levels that share some nuclear structure property, such as rotational bands, a set of vibrational states or simple shell-model configurations.
NSR
The Nuclear Science References (NSR)
[NSR] is a comprehensive
bibliographic database covering low-, intermediate- and high-energy nuclear physics.
The file contains almost 140,000 references from 1910 to the present time.
Each reference in the NSR has a unique identifier - the Keynumber. References since 1969 contain a Keyword Abstract, which indicates the kinds of data contained in the article. Most references also have a number of Keywords.
Originally, references were entered for papers that reported experimental data on nuclear structure, nuclear decay and nuclear reactions and on theoretical studies of specific nuclei and nuclear reactions. Recently the scope has been widened to include also high-energy nuclear physics references. Also, all references in the core nuclear physics journals (e.g. Nuclear Physics, Physical Review C) are entered in the file. This increase in scope is reflected in the change of name from Nuclear Structure References to Nuclear Science References.
Comments to:
F Chu (program),
P Ekström (manual)
All contents copyright © 1996, Isotopes Project, Berkeley Lab. All rights reserved.
Revised: