Event generator DECAY4 for simulating double-beta processes and decays of radioactive nuclei

The computer code DECAY4 is developed to generate initial-energy, time, and angular distributions of particles emitted in radioactive decays of nuclides and in nuclear (atomic) deexcitations. Data for describing nuclear-and atomic-decay schemes are taken from the ENSDF and EADL database libraries. By way of example, the DECAY4 code is applied to describing several underground experiments.