Experimental Spectra (IMAGE) Helmholtz Association Caption The experimental spectra from the laser spectroscopy of the three nobelium isotopes are shown in front of the calculated charge density distribution of No-254. Credit S. Raeder, GSI Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.