An international research team led by the Paul Scherrer Institute PSI has measured the radius of the nucleus of muonic helium ...

Elements are arranged in the periodic table in order of increasing atomic number. For example hydrogen has the atomic number of one, helium two ... 2,8,1. An atom of sodium has 11 electrons.

A research team has achieved a significant breakthrough in determining fundamental properties of atomic nuclei. The team conducted laser spectroscopy experiments on muonic helium-3. Muonic helium-3 is ...

The wavelength of these yellow lines is directly related to the energy levels of the sodium atom, and in this way spectroscopy opens a window onto atomic structure. The study of the spectra of the two ...

Draw a line from 550 mg across to the curve of the graph and another down to the time scale bar [1], the time taken for the mass to decrease by half is 1.3 billion years [1]. The total atomic ...

The basic atomic structure of Helium-4 vs Helium-3. Helium-3 is a 'stable isotope', meaning that it has a different number of neutrons than the typical atom of that element, and it will never ...