[en] Proceedings of the fourth meeting of the participants in the IAEA Coordinated Research Programme to measure and evaluate the required nuclear decay data of heavy element radionuclides, convened by the IAEA Nuclear Data Section on 12-13 October 1981, at IAEA Headquarters in Vienna. The meeting participants reviewed the data requirements, updated and extended the recommended list of half-lives, and continued to review the status of alpha and gamma radiation spectra emitted in the decay of transactinium isotopes. (author)
Dec 1981; 53 p; 4. coordinated research meeting on the measurement and evaluation of transactinium isotope nuclear data; Vienna, Austria; 12 - 13 Oct 1981