Transitions between different electronic energy levels in elements occur at unique energies and intensities, giving each element a distinctive emission spectrum. When the energy of an incident photon ...

This is known as the atomic spectrum. “High-resolution, broadband spectroscopy is essential for precision measurements in atomic physics and the search for new fundamental interactions,” explains ...

The ability to describe the internal structure of atoms is important not only for understanding the composition of matter, but also for designing new experiments to explore fundamental physics.