The new elements were made by bombarding a lead-208 target with an intense beam of high- energy krypton-86 ions over an 11-day period. The krypton ions were accelerated by the 88-inch cyclotron at the...
The report has already led to security being tightened at all laboratories run the Department of Energy, including those at Los Alamos and Livermore. Fears over the new security regime – visitor...
Aldermaston has over 4000 employees and a budget of £300m. Over half of this (£168m) is spent on the manufacture, maintenance and testing of nuclear weapons, and on related research. Another...
Just as electrons can be excited inside an atom, neutrons and protons can be excited from their ground states into higher-energy states inside the nucleus. If these states have long half-lifes then th...
Governments that have signed the CTBT – which will come into force this September – are concerned that countries such as Iran, India and Iraq might try to develop so called ‘sub-crit...
Seaborg shared the 1951 Nobel Prize for Chemistry with the physicist Edwin McMillan. In addition to a long career at the University of California and the Lawrence Radiation Laboratory, both in Berkele...
The existence of superheavy elements was predicted about 30 years ago on the basis of the nuclear shell model, which was originally developed in 1949. The model explains why nuclei with certain “...
Researchers at the Dubna Laboratory of Heavy Ion Nuclear Reactions in Russia, headed by Yuri Oganessian, collaborating with a team from the Lawrence Livermore National Laboratory in the US, made the d...
Donald Umstadter and co-workers used a neodymium-glass laser to illuminate helium gas in a vacuum chamber. The team were able to focus 4 trillion watts of power on the gas. The electric field of the l...