The radioactive decay of atomic nuclei has been one of the keystones of nuclear physics since the beginning of nuclear research. Now the heaviest nucleus decaying via proton emission has been ...

The material chosen for our experiments is Bi 1-x Ca x MnO 3 (BCMO). For trivalent Bi and divalent Ca, the Mn ions are in a mixed valence state, Mn 3+x.At high temperature, Mn 3+ and Mn 4 ...

The atomic hypothesis, in fact, did not seem indispensable for the explanation of the phenomena of chemical affinity, so long as the stoicheiometric laws alone confirmed it, and so long as atoms ...

Both the outer "valence" electrons and inner-core electrons of atomic nuclei behave unexpectedly under extreme pressure, which suggests there may be as-yet-undiscovered states of matter ...

This suggests that the addition of a single valence proton to oxygen-24 has a profound effect on the doubly magic core. Indeed, Tang’s team concluded fluorine-25’s excited core is likely responsible ...

This initial “pump” pulse excites electrons from the water molecule’s outer (valence) orbitals, which are responsible for molecular bonding and chemical reactions. These orbitals are further from the ...

Atomic Mass: The atomic mass of an atom is the sum of the protons and neutrons in its nucleus. ... Valence Electrons: The electrons in the outermost shell of an atom are called valence electrons.

Now, an innovative team of scientists says they may have figured out a new way to detect the elusive substance using an international network of atomic clocks. In the early 1930s, astronomers such as ...

The study is part of Kokkonen's doctoral thesis and a direct scientific follow-up to her master's thesis, in which she discovered a new type of atomic nucleus, the 190-astatine. The thesis article ...