Nucleonica at a Glance

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What is Nucleonica?

The NUCLEONICA brochure (pdf)

Download Nucleonica Brochure

As a result of recent developments on issues such as energy security and sustainability, nuclear safety, security, and non-proliferation, and protection of the environment, we are witnessing a resurgence of interest in nuclear power and the nuclear sciences in general. The next generation of reactor energy systems aimed at addressing many of these issues – the so-called Generation IV systems – are expected to become available for commercial introduction in the period between 2015 and 2030 or beyond.

There is also large range of “nonpower” applications of radioisotopes and radiation in a variety of diverse fields such as medicine (e.g. cancer therapy), agriculture (e.g. pest population control), food irradiation (e.g. to increase shelf-life) and in industry (e.g. tracers, radiography, gauging, radiation processing, etc.), where such nuclear skills are also required. In order to support this renewed interest in the nuclear sciences, we will need a nuclear skills renaissance and it is within this context that the Nucleonica nuclear science web portal ( has been developed.

With its roots in the traditional paper-based Karlsruhe Nuclide Chart, Nucleonica has grown to become the leading online resource in the nuclear sciences. Nucleonica is particularly suitable for education and training of young scientists, engineers and technicians in the nuclear domain. A variety of our applications enable researchers and specialists to make complex and precise calculations in state-of-the-art fashion.

The Portal is already being used by thousands of scientists and students worldwide in over 92 countries. Due to its advanced IT features, user friendly and intuitive environment, the platform has recently been endorsed by the Sustainable Nuclear Energy Technology Platform (

“Nucleonica plays … an important role in making nuclear education more attractive and in building nuclear knowledge for a new generation of engineers and scientists”

The Nucleonica Nuclear Science Portal is an innovative professional and technical resource for knowledge creation and competence building in nuclear science for the worldwide nuclear community. Nucleonica provides a customisable, integrated environment and collaboration platform, using the latest internet “Web 2.0” dynamic technology. A unique feature of Nucleonica is its “electronic knowledge objects”, which cover web-based scientific applications, an online wiki and blog as well as forums that enable collaborative research and scientific projects in a worldwide accessible online laboratory.

Who is Nucleonica aimed at?

Nucleonica Broch 2.jpg

Nucleonica is aimed at scientists, engineers and technical personnel working in the fields of nuclear power, health physics, radiation protection, nuclear and radiochemistry, decommissioning, nuclear medicine, etc. Nucleonica is particularly suitable for education and training of young scientists, engineers and technicians in the nuclear domain. It can also be used by professionals for everyday calculations, obtaining quick results in various fields of applications and testing, validating and verifying complex computer models. Nucleonica also provides a range of consultancy services and industry cooperations. Examples of some recent studies include an analysis of the handling problems arising in the dismantling of radioactive sources, a decommissioning study of neutron sources, shielding analysis for a minor actinide laboratory, and a comparison of the radiotoxicities of wastes from fission, fusion, and coal fired power stations. Our clients include the Bundesamt für Strahlenschutz (BfS), Fichtner Engineering and Consulting, and Europol.

How can Nucleonica help you?

Main user interface

Nucleonica provides you with user friendly access to the latest reference data from internationally evaluated nuclear data. A unique feature is the wide range of web-based nuclear science applications for decay calculations, dosimetry & shielding, etc. A variety of social networking tools are provided for scientific collaboration.

In addition Nucleonica offers a range of introductory and advanced training courses in various areas of nuclear science. One of the main aims of these courses is to contribute to establishing a safety culture among the scientists and especially the younger scientists. This safety culture is a necessary prerequisite for a general acceptance of nuclear energy worldwide. Recent courses include: Illicit Trafficking and Radiological Consequences (ITRAC) with special focus on nuclear security; Nucleonica Training on Nuclear Science (NuTRONS) with special focus on environmental radioactivity; etc. Shorter courses on gamma spectrometry, nuclide charts, Karlsruhe Nuclide Chart, introduction to Nucleonica are also offered. For more information on training courses see the Nucleonica wiki at

The NucleonicaWiki

The NucleonicaWiki

The Nucleonica Wiki

The Nucleonica wiki is used to provide the technical documentation in support of the Nucleonica nuclear science portal. The basic characteristic of a wiki is that it allows the article author to directly edit and add content online (the word “wiki” means fast in Hawaiian) – there is no need for a web master or programmer to convert the text into html. In contrast to Wikipedia which can be edited by anyone, the Nucleonica wiki can only be edited by the Nucleonica experts and consultants. Most of the entries under “All Articles” or Help main wiki page are links to the technical documentation in support of the Nucleonica applications and nuclear data pages. Other main pages include: Glossary, Element information, ReadingRoom (articles, etc.), Gallery of Nuclear Science, Weblinks, Karlsruhe Nuclide Chart, Ask an Expert, FAQs, etc. Also shown is a search box for text searching in the entire wiki.

Nucleonica Blog

The Nucleonica Blog

The Nucleonica Blog can be reached from the main Nucleonica web page or directly at blog. This page is used to provide latest information on Nucleonica nuclear science portal and related products such as the Karlsruhe Nuclide Chart. The blog provides an in-depth look at our activities in the field of nuclear knowledge management, and education and training in the nuclear sciences. It is also used as an archive for all such articles and has an own search box. The RSS blog feed is shown. There are two main categories in the Nucleonica blog: The Karlsruhe Nuclide Chart and Nucleonica.

Nucleonica Forum

The Nucleonica Forum

The main goal of the Nucleonica forum is to capture the tacit knowledge of experts and peers alike within the specific context of the Nucleonica applications. Initially a user will have little knowledge of the application. However, after some experimentation, questions can be posted in the Nucleonica forum on a particular application. The approach is based on a question and answer interaction between the expert, who possesses tacit knowledge, and users. The knowledge or know-how flow is “externalized” by the fact that the question and answer dialogue is fully recorded in the forum database. The Nucleonica forum can be regarded as a “community of practice” to support this process. Scientists can assist each other on a reciprocal basis on research projects through this “social networking” and “crowdsourcing”. The basic principle followed here is that knowledge can be created through dialogue and interaction between contributors and made explicit through mutual discussion in the online forum. The Nucleonica forum can be accessed directly from the main networking page. This forum can be read by anyone with an internet connection. To post a discussion topic (thread) or reply to an existing topic the user must register.

Nuclear News

The nuclear news aggregation service provides latest news and information on nuclear issues. This information is provided by our web crawler which scans thousands of newspapers worldwide for nuclear related news. The news is updated at least on an hourly basis. The user can select the number of displayed news articles, the language (English, French, German), and the news categories (Nuclear (General), Nuclear Decommissioning, Nuclear Medicine, Nuclear Reprocessing, Nuclear Safety).

Main Features

  • Data Centre

Online interactive nuclide charts (based on decay modes, half-lives, binding energy, spin, partiy, etc.), “Build your own” nuclide charts, reference data (datasheets, derived data, cross sections, spectral data, fission yields) and searchable databases for inter-nationally evaluated nuclear data (JEFF, ENDF, JENDL, BROND, CENDL, ICRP, Table of Isotopes, EGAF, ADR, etc.)

  • Application Centre

The application modules include radioactive decay, dosimetry & shielding, fission yields, range & stopping power, reactor irradiation and nuclide depletion (with webKORIGEN), transport and packaging, library creation for spectroscopy, nuclide mixtures etc., with publication quality graphics. In addition, an advanced scripting language is available for user defined calculations and batch processing.

  • Knowledge Centre

Extensive use is made of “wiki” technology in the NUCLEONICA knowledge centre for online Help, Articles, Weblinks, Forum, etc. The ease of operation makes the NucleonicaWiki an effective tool for adding/changing content – this allows the portal to grow organically and provide a powerful nuclear science collaboration platform for its users. The nuclear news aggregation services, based on XML and RSS feeds using JRC web-crawler technology, provides latest news and information on nuclear issues.

  • Personalised Desktop

NUCLEONICA keeps track of recent user activities and preferences by “remembering” and storing these in a Personalized Desktop

Key Advantages of Nucleonica

Nucleonica Landing Page at The main graphic shown how the page is displayed on a PC. The inset shows the page on a mobile device)

* Manage all your data in a single browser-based system

The web applications are browser and operating system independent and can be accessed with Internet Explorer, Mozilla-based browsers (Mozilla, Firefox, Netscape) and a variety of other browsers such as Opera, Safari, etc. The NUCLEONICA portal can also be accessed by a variety of mobile devices.

* Don‘t waste time writing and testing programs

NUCLEONICA provides you with user- friendly, reliable, and fast modules (for decay,dosimetry & shielding, range and stopping power, transport and packaging, reactor irradiation calculations, etc.)

* Keep informed on nuclear developments

NUCLEONICA web crawlers scan hundreds of websites every few minutes to bring you the latest nuclear news.

* Provides the opportunity to introduce and share your expertise

with the NucleonicaWiki – a collabora- tive authoring tool in nuclear science

* Need to prepare a lecture or a training course?

NUCLEONICA is an ideal source of information, articles, weblinks, graphics, tables etc. Nucleonica will assist you in preparing training courses by providing an e-learning platform for education and training in the nuclear sciences.

* Keep track of your recent activities

NUCLEONICA will “remembering” your recent activities and preferences and store these in a Personalized Desktop.

* Improve the quality of your work

Avoid the tedious task of searching for nuclear data. NUCLEONICA uses the most recently evaluated nuclear data from international datafiles (JEFF3.1, 8th Table of the Isotopes, ICRP72, etc.).

* Publication quality scientific graphs

at any time from any location. NUCLEONICA web driven graphics package is easy to use and delivers publication quality graphs in a variety of formats (GIF, JPG, EMF, etc.).

Free Access to the NUCLEONICA Portal / Licenses

From the homepage every new user has to first register (with valid email) to open a free account from which he has the possibility of upgrading to the calculation and service modules. This step is compulsory. With this Free Access, a part of the NUCLEONICA web portal is freely available to all users. This allows the users basic access to the nuclear data and basic applications. Another advantage is that it allows the user to get a feeling for the web portal and “see” all the modules on offer on the main (portal) page.

Following registration, an email is sent to the user to acknowledge registration details and to provide username and password to access the NUCLEONICA portal.

Nucleonica Premium Service

  • The Free package provides user access to all the knowledge objects with restricted features. This gives users the opportunity to test the basic features and obtain a feeling for the portal.
  • The Premium package provides user access to all the knowledge objects with full features. There is an annual user charge for the Premium package. Individual and institutional multi-user licenses are available.

For more information on the Premium package and its additional features, see...

The NUCLEONICA List of features (pdf)

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Karlsruhe Nuclide Chart