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NUCLEUS information resources

The IAEA's NUCLEUS information resource portal provides access to over 100 scientific, technical and regulatory resources, including databases, applications, publications and training material. As it is mainly meant for IAEA counterparts in the government, industry and scientific community, NUCLEUS hosts a number of resources that require registration. Many sites, however, can be accessed without a password.

Charged Particle Cross Section Database

The Charged Particle Cross Section Database is intended for medical radioisotope production and for diagnostic radioisotopes and monitor reactions.

Computer Index of Neutron Data

CINDA is a database that contains bibliographic references to measurements, calculations, reviews and evaluations of neutron cross-sections and other microscopic neutron data.

Contact Experts Group Database

This database is currently in the process of being transferred to the International Nuclear Information System (INIS). It has been developed to support informational exchange between the countries participating in the IAEA Contact Expert Group for International Radioactive Waste Projects in the Russian Federation (CEG).

Country Nuclear Power Profiles

The CNPPs cover background information on the status and development of nuclear power programmes in countries with nuclear plants in operation or plants under construction, and in countries actively engaged in planning such programmes.

COVID-19 NPP OPEX Network

The COVID-19 NPP OPEX Network provides a limited access platform for peer-to-peer sharing of COVID-19 related mitigating measures and impact on nuclear power plant performance: operation, maintenance as well as the implementation of refueling and maintenance outages. Intended users include plant operators and related organizations.

Cyber Learning Platform for Network Education and Training (CLP4NET)

​​​CLP4NET, the Cyber Learning Platform for Network Education and Training, allows users to easily find educational resources related to topics ranging from nuclear energy, nuclear safety and nuclear science and technology. It contains instructor-led courses and e-learning self-study resources and is provided to the interested public as a cost-free service.

Database for Prompt Gamma-ray Neutron Activation Analysis

This database offers a variety of tables for all natural elements and includes the following data: isotopic composition, thermal radiative cross section (total and partial), Westcott g-factors, energy of the gamma rays (prompt and delayed), decay mode, half life and branching ratios.

Database on Discharges of Radionuclides to the Atmosphere and Aquatic Environment

DIRATA is a worldwide centralized electronic repository of official records submitted by IAEA Member States. Each site dataset includes annual discharge and detection limits.

Direct Application of Phosphate Rock

This site is aimed at guiding decisions and providing recommendations on the use of phosphate rock (PR) as fertilizer, predict their cost-effectiveness as a source of phosphorus for crop productivity and its long-term sustainability and environmental consequences of using soluble P and phosphate rocks.

DIrectory of RAdiotherapy Centres (DIRAC)

DIRAC is the world’s most comprehensive database on radiotherapy resources. It comprises current and historical global data on radiotherapy centres, teletherapy machines, brachytherapy units, treatment planning systems, computed tomography systems and simulators.

Emergency Preparedness and Response Resources

Through its Incident and Emergency Centre (IEC), the IAEA maintains four online tools and mechanisms to share information and data on emergency preparedness and response for nuclear and radiological incidents and emergencies.

EMPIRE – Nuclear Reaction Model Code

EMPIRE is a flexible and easy-to-use tool for the basic research and evaluation of nuclear data.

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