Levitation Yields Better Neutron-Lifetime Measurement (IMAGE) DOE/Los Alamos National Laboratory Caption Trapping ultracold neutrons and measuring their lifespans has been a successful project at the Los Alamos National Laboratory accelerator center, LANSCE. Here, part of the magnet array is shown, with the vacuum vessel end cap removed for magnetic field mapping, performed by Tennessee Technological University physics student Keegan Hoffman. Image credit, Los Alamos National Laboratory. Credit LANL 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.