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NUCLEUS information resources

The IAEA's NUCLEUS information resource portal provides access to over 110 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.

Accelerator Knowledge Portal

This site is a knowledge resource for and by the ion beam accelerator community.

ADS Nuclear Data Library

Application Library for Accelerator Driven Systems. Application test library in ACE and MATXS format for ADS neutronics design. 

Advanced Reactors Information System (ARIS)

The IAEA's Advanced Reactors Information System (ARIS) is a web-accessible database that provides Members States with balanced, comprehensive and up-to-date information about advanced nuclear plant designs and concepts. 


ALADDIN is a database system to provide numerical atomic, molecular and plasma-material interactions data of interest to fusion research. 

Application of Safeguards to Geological Repositories

The main objective of the Application of Safeguards to Geological Repositories (ASTOR) Group of Experts is to support the IAEA’s objective to obtain credible assurance that nuclear material and technology associated with geological disposal activities are not diverted from peaceful nuclear uses.

Application of Soil Moisture monitoring eLearning

The e-Learning course was developed to give a general knowledge on soil water and its measurement using nuclear and related techniques in soil water management and irrigation scheduling to enhance crop water productivity.


ARTEMIS is the IAEA's integrated expert peer review service for radioactive waste and spent fuel management, decommissioning and remediation programmes.

Asian Nuclear Safety Network

The primary objective of the ANSN is pooling, analysing and sharing nuclear safety information, existing and new knowledge and practical experience among the participating countries.

Atlas of Neutron Capture Cross Sections

The NGATLAS contains neutron capture cross sections in the range 10-5eV - 20MeV as evaluated and compiled in recent activation libraries.

Atomic and Molecular Bibliographic Data System

AMBDAS is a database system to provide bibliographic atomic, molecular and plasma-material interactions data of interest to fusion research.

Atomic Mass Data Center

The Atomic Mass Data Center (AMDC) and its electronic bulletin allow for the exchange of information on masses (experimental, evaluation or theory).

Atomic Masses, Q-values, and Threshold Energies

This Q-value calculation programme allows you to calculate reaction Q-values and threshold energies and decay Q values based on the 1995 Update to the Atomic Mass Evaluation and to retrieve other quantities contained in this evaluation.


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