National Centre for Nuclear Structure & Decay Data Evaluation
Evaluation of Nuclear Structure and Decay Data provides recommended values derived from a rigorous compilation and critical analysis of all available experimental results on nuclear properties. It comprehensively covers nuclear level characteristics—such as energies, half-lives, spins and parities, decay modes, static moments, band structures, and configurations—as well as nuclear radiations including gamma rays, electrons, positrons, neutrons, protons, and alpha particles. In addition, it details radiation properties such as energies and intensities, along with radiation-specific parameters including multipolarities, mixing ratios, internal conversion coefficients, log ft values, hindrance factors, and decay probabilities, thereby offering a reliable and coherent picture of nuclear structure and decay behavior. Contributions to ENSDF are made by members of the international network of Nuclear Structure and Decay Data (NSDD) evaluators working at 17 centres worldwide. The Indian Nuclear Data Centre (INDC) was established in 2005 under the auspices of the International Atomic Energy Agency, Vienna. Initially, INDC was headed by Prof. A.K. Jain at the Department of Physics, Indian Institute of Technology Roorkee, and was later transferred to the Variable Energy Cyclotron Centre, Kolkata, under the leadership of Dr. Gopal Mukherjee. Evaluators of INDC have contributed to the evaluation of Nuclear Structure and Decay Data Files for the mass region A = 215–229, various horizontal evaluations, and technical code developments. To further strengthen the NSDD evaluation programme, regular hands-on training sessions are organized.