Precise mass measurement aids the hunt for heavy elements that decay slowly.
Using a special trap, researchers have captured and weighed three isotopes of the superheavy element nobelium - the heaviest element so far to have its mass measured directly. The measurements are an important step towards discovering the 'island of stability', a small class of yet-to-be discovered heavy elements that physicists think are likely to remain stable for minutes, days or even years. The study, published this week in Nature, will also help to refine descriptions of the heaviest atoms ever made. Read more