Einsteinium-255, produced through irradiation in ILL’s high-flux reactor, provided a continuous supply of fermium-255, ...

Neutron stars are some of the densest objects in the universe. They are the core of a collapsed megastar that went supernova, have a typical radius of 10 km—just slightly more than the altitude ...

By bombarding thorium with neutrons, activities are obtained which have been ascribed to radium and actinium isotopes 8. Some of these periods are approximately equal to periods of barium and ...

The latter measurements were carried out chiefly to ascertain the possible presence of strongly capturing isotopes but leading to the formation of a stable instead of an active isotope ...