New Energy Levels Observed in Atomic Structures

 


The Laboratorie Aime Cotton (LAC) in Orsay, France has been a leader in atomic research since the 1960’s. They claim to have made significant progress in the classification of very complex atomic spectra.

The improvements have occurred for two reasons. The first being the development of Fourier transform spectroscopy, the second is from theoretical interpretation of atomic spectra. 

The research was published in the European Physical Journal D. 

Sophie Kroger is from the Berlin University of Technology and Economics. She carried out detailed observation and analysis of protactinium’s infrared (IR) spectrum. She observed twenty new energy levels that were previously not detectable. The study provided deeper insights into atomic structures and interactions. 

IR spectra show the wavelengths absorbed by the atomic samples as they interact with the light. These spectra showed conclusive information about hyperfine structures. Hyperfine structures are tiny variations in atomic energy levels. These can result from electromagnetic interactions between atomic nuclei. They can also happen between the surrounding clouds of orbiting electrons. These hyperfine structures show as distinctive peaks and valleys in the IR spectrum. 

Kroger mainly studied the IR spectrum of protactinium. This is because it shows an especially intricate hyperfine splitting. She used an advanced mathematical approach to using the Fourier transform spectroscopy. Variations in the IR signal were shown as a spectrum. This allowed for high precision analysis of the spectral lines. 

Kroger compared the experimental data with hyperfine peak wavelengths to theoretical models. She was also able to discern twenty new energy levels in protactinium’s hyperfine structure. 

The researchers hope to observe even more subtle energy levels. This important research shows the progress made in atomic spectroscopy! 

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