Saturday 01 February 2025
Scientists have long been fascinated by the mysterious 60Fe isotope, a radioactive element that is thought to originate in massive stars and can be used as a clock to measure the age of celestial objects. But despite its importance, the process by which 60Fe is created has remained shrouded in mystery.
Recently, a team of researchers from Michigan State University and other institutions set out to shed light on this enigma by studying the reaction between neutrons and iron-59, the parent nucleus of 60Fe. Using a cutting-edge facility at the National Superconducting Cyclotron Laboratory, they bombarded a target with neutrons and detected the gamma rays emitted when the resulting excited nuclei decayed.
The researchers were able to measure the rate at which this reaction occurs, known as the Maxwellian Averaged Cross Section (MACS), and found that it is significantly higher than previously thought. This has significant implications for our understanding of how 60Fe is produced in massive stars, and could help us better understand the evolution of these celestial giants.
The team’s findings also have important implications for astrophysicists who study the age and composition of distant stars and galaxies. By using 60Fe as a clock, scientists can determine the age of these objects with greater precision than ever before.
In addition to its importance in astrophysics, this research has significant implications for our understanding of nuclear reactions more broadly. The team’s results could help us better understand how neutrons interact with atomic nuclei, which is crucial for our understanding of a wide range of phenomena, from the behavior of stars and galaxies to the properties of atomic nuclei themselves.
The researchers’ work was made possible by a combination of cutting-edge technology and careful analysis of their data. They used a sophisticated statistical method called the Oslo method to extract the MACS from their experimental results, which involved analyzing the energy distribution of the gamma rays emitted by the decaying nuclei.
The team’s findings have been published in a recent issue of the journal Physical Review Letters, and are expected to have significant implications for our understanding of nuclear reactions and astrophysics.
Cite this article: “Unraveling the Mystery of 60Fe Production”, The Science Archive, 2025.
60Fe, Iron-59, Neutrons, Gamma Rays, Maxwellian Averaged Cross Section, Macs, Astrophysics, Nuclear Reactions, Celestial Objects, Star Evolution
