An international team of researchers has systematically measured the β-decay half-lives of 40 nuclei near calcium-54, ...

Photo: Niels Bohr's research notes for his new atomic theory Rutherford's find came from a very strange experience. Everyone at that time imagined the atom as a "plum pudding." That is, it was roughly ...

Atomic nuclei are often described as orderly systems. Certain numbers of protons or neutrons, called magic numbers, usually produce especially stable and spherical nuclei. These numbers fill entire ...

Different atoms and ions possess characteristic energy levels. Like a fingerprint, they are unique for each species. Among ...