First Experimental Result Published from the High-Intensity Heavy-Ion Accelerator Facility
Recently, the research team from the Institute of Modern Physics (IMP) of the Chinese Academy of Sciences, together with collaborators, successfully produced and identified the rare isotope hafnium-153 using the High-Intensity Heavy-Ion Accelerator Facility (HIAF). This is the first physics result obtained during the commissioning of HIAF, demonstrating that China's new-generation high-intensity heavy-ion research facility is capable of exploring unknown nuclides and expanding the nuclear chart. It marks the official commencement of HIAF's scientific discovery journey. The result was published as a short communication in *Science Bulletin*. Figure: Position of hafnium-153 on the nuclear chart; the blue line indicates the boundary of known nuclides. Image | Hu Houyu, Li Hongfu. Atomic nuclei are composed of protons and neutrons, and different combinations of proton and neutron numbers form the diverse world of nuclides. Exploring unknown nuclides and investigating the boundaries of nuclear existence are important frontiers in nuclear physics. Hafnium-153 is located in the neutron-deficient heavy-mass region and is an important subject for studying the evolution of nuclear structure and the limits of nuclear stability. It had not been reported prior to this experiment. The discovery and precise measurement of this nuclide will help test nuclear theory models and deepen our understanding of nuclear structure regularities.
2026-08-03
