We have developed an interactive visualisation tool, decay series visualisation (DECSERVIS), for exploring the three natural radioactive decay chains. Through DECSERVIS, one can investigate the full decay scheme of any natural decay chain radionuclide to obtain the number of nuclides, their masses, activities, and activity ratios, accounting for all the daughters, starting from initial conditions freely chosen by the user. The tool has been developed particularly for user friendly and flexible operation. Chain decay in closed systems can be explored as a function of time with various graphical presentations such as solid curve and column diagrams or animation. We present several exploration examples related to geological dating. DECSERVIS will be freely available on request.
 M. Ivanovich and R.S. Harmon: Uranium-series disequilibrium, applications to earth, marine, and environmental sciences, 2nd ed., Clarendon Press, Oxford, 1992.
 J. Galy and J. Magill: “Nuclides.net: An integrated environment for computations on radionuclides and their radiation”, In: Proc. International Conference on Advances in Destructive and Non-destructive Analysis for Environmental Monitoring and Nuclear Forensics, Karlsruhe, Germany, 21–23 October 2002, IAEA-CN-98, pp. 1–7.
 R. Michel: Radioactive decay, ZSR, University Hannover, http://www.zsr.unihannover.de/folien/zerfag.pdf.
Financed by the National Centre for Research and Development under grant No. SP/I/1/77065/10 by the strategic scientific research and experimental development program:
SYNAT - “Interdisciplinary System for Interactive Scientific and Scientific-Technical Information”.