Tritium is an isotope of the chemical element hydrogen. It has not only a single proton but also two neutrons in the nucleus of its atoms. Although technically it is still the element hydrogen, it has its own chemical symbol, T. Chemically, tritium...

A rare naturally occurring and radioactive ISOTOPE of hydrogen. It has an atomic mass of 3 and a half-life of 12.5 years. It can be manufactured artificially in nuclear reactors and is used as a tracer in medical and laboratory research. It is also...

An unstable radioactive isotope of hydrogen with a mass of three and a half-life of 12.6 years used in fusion power research and as a biological...

Tritium (symbol T or ³H) is a radioactive isotope of hydrogen. The nucleus of tritium (sometimes called a triton) contains one proton and two neutrons, whereas the nucleus of protium (the most abundant hydrogen isotope) contains no neutrons. if...

SINCE ALL OF the figures are highly classified, we can't tell you how soon the Energy Department needs to get its reactors back into operation. They produce the plutonium and tritium of which nuclear weapons are manufactured and, while there's plenty of plutonium on...

The current shutdown of the nation's weapon reactors at the Savannah River Plant for safety-related reasons is suddenly focusing attention on the importance of tritium in nuclear weapons. Tritium is short-lived, decaying by 5.5 percent a year, so the essential question for national security...

The Tennessee Valley Authority's board of directors voted unanimously Wednesday to begin a five-year plan to finish a second nuclear reactor at the Watts Bar Nuclear Plant on the Tennessee River.The plant, about 50 miles south of Knoxville at Spring City, was the last new...

In this rural county beset by high unemployment, the soon-to-arrive day when the local nuclear-waste landfill closes its doors to nearly all debris is no cause for celebration.Chem-Nuclear, a disposal site for low-level radioactive waste from hospitals and power plants around the nation, offers some...